2025 Mercedes-Benz B-Class: Smart Hybrid Features

The 2025 Mercedes-Benz B-Class brings a sophisticated evolution to the premium compact MPV segment, combining advanced connectivity, refined efficiency, and everyday practicality. Positioned as the intelligent family car in the Mercedes lineup, the B-Class merges the comfort of a luxury sedan with the versatility of a compact crossover. For 2025, the model receives updates to its mild-hybrid powertrain, improved MBUX 2.0 infotainment system, and enhanced driver-assistance technologies. Subtle design changes refine its aerodynamic profile, while upgraded materials and ergonomic seating ensure a calm, contemporary driving experience. With its spacious interior, advanced safety suite, and sustainable engineering, the 2025 B-Class is more than just a compact MPV—it’s a statement of efficiency, intelligence, and refined practicality tailored for modern life.

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What’s New in the 2025 Mercedes-Benz B-Class

The 2025 Mercedes-Benz B-Class marks a thoughtful mid-cycle update for one of the most versatile and intelligent compact MPVs on the market. Mercedes refines its formula by enhancing connectivity, efficiency, and design appeal while retaining the practicality and comfort that have defined the B-Class for over a decade. This update strengthens its position as the go-to premium family vehicle—smart, safe, and surprisingly luxurious.

Exterior Design and Aerodynamic Refinements

The B-Class retains its elegant yet dynamic proportions, but the 2025 model gains several aesthetic and functional improvements. The front fascia now adopts a cleaner grille design with integrated Mercedes star patterns, framed by slimmer LED High Performance headlamps. The rear bumper has been reshaped for better airflow, and new wheel designs (16–19 inches) improve stance and efficiency.

Subtle aerodynamic tweaks—such as optimized mirror housings, underbody panels, and a redesigned roof spoiler—lower the drag coefficient to 0.26 Cd, boosting both efficiency and stability.

Exterior highlights:

• Redesigned LED headlights and taillamps
• New star-pattern grille for a sportier identity
• Aerodynamic updates for improved efficiency
• Optional AMG Line styling package for dynamic appeal
• New color palette, including Digital White and Spectral Blue

Powertrain Upgrades and Mild-Hybrid Efficiency

Under the hood, the 2025 B-Class embraces electrified efficiency with standard 48V mild-hybrid technology across all engine variants. The B 200 and B 220d models receive power and torque optimizations through improved turbocharging and energy recuperation.

The integrated belt-driven starter generator (RSG) provides up to 14 horsepower (10 kW) of additional boost during acceleration and allows seamless engine start-stop transitions, resulting in smoother driving and lower fuel consumption. Combined with the latest 7G-DCT automatic transmission, the drivetrain feels more refined and responsive than ever.

Updated Powertrain Overview

Model	Engine Type	Power Output	Hybrid Boost	Transmission
B 180	1.3L Turbo I4 Mild-Hybrid	136 hp	+14 hp (RSG)	7G-DCT
B 200	1.3L Turbo I4 Mild-Hybrid	163 hp	+14 hp (RSG)	7G-DCT
B 220d	2.0L Diesel Mild-Hybrid	150 hp	+14 hp (RSG)	8G-DCT

Powertrain highlights:

• 48V electrical system with integrated starter-generator
• Enhanced energy recuperation under braking
• Quieter start-stop operation and better throttle response
• Lower CO₂ emissions and improved fuel economy

Interior Enhancements and Comfort Upgrades

Inside, the 2025 B-Class showcases a refined layout focused on digital clarity and ergonomic comfort. The MBUX 2.0 infotainment system now features faster processors and upgraded voice interaction, accessible via the standard 7-inch driver display and 10.25-inch central touchscreen (dual 10.25-inch setup optional).

Material quality has been elevated with recycled microfiber upholstery, new trim inlays, and improved ambient lighting configurations. Mercedes’ attention to detail extends to the center console redesign—featuring a cleaner surface, new wireless charging dock, and additional USB-C ports.

Interior upgrade highlights:

• Latest MBUX 2.0 interface with natural speech control
• Optional dual 10.25-inch widescreen display
• New sustainable upholstery materials
• Revised ambient lighting and dashboard trim
• Enhanced sound insulation for cabin refinement

Key Takeaways

• Standard 48V mild-hybrid powertrains for all variants
• Updated MBUX 2.0 system with smarter AI integration
• Subtle design and aerodynamic refinements for efficiency
• More sustainable interior with improved comfort
• Reinforces its reputation as the most intelligent compact MPV

The 2025 Mercedes-Benz B-Class refines its strengths through innovation, technology, and sustainability. It remains the benchmark for those seeking compact practicality without sacrificing sophistication or Mercedes-Benz quality.

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Engine Options and Real-World Performance Review

The 2025 Mercedes-Benz B-Class delivers a refined balance of power and efficiency, combining compact agility with smooth, mild-hybrid responsiveness. Each powertrain in the lineup benefits from Mercedes’ 48V electrification, improving throttle response, energy recuperation, and overall refinement. This generation isn’t about raw speed—it’s about seamless, intelligent performance designed for urban mobility and long-distance comfort alike.

Powertrain Variants and Output

The B-Class continues to offer a versatile engine portfolio that suits both petrol and diesel preferences. Each powertrain is optimized for fuel efficiency and smoothness, now paired exclusively with dual-clutch automatic transmissions for improved comfort and faster gear changes.

The B 180 and B 200 gasoline engines feature a 1.3-liter turbocharged four-cylinder, assisted by a 48V mild-hybrid starter-generator delivering an extra 14 horsepower during acceleration. The B 220d, on the other hand, uses a 2.0-liter diesel for superior torque and highway economy, also benefiting from the mild-hybrid system.

Engine performance data:

Model	Engine Type	Power	Torque	Transmission	Drivetrain
B 180	1.3L Turbo I4 Mild-Hybrid	136 hp	230 Nm	7G-DCT	FWD
B 200	1.3L Turbo I4 Mild-Hybrid	163 hp	270 Nm	7G-DCT	FWD
B 220d	2.0L Diesel I4 Mild-Hybrid	150 hp	320 Nm	8G-DCT	FWD / AWD

These powertrains combine responsive acceleration with excellent efficiency, aided by energy recovery systems that store deceleration energy for later use, reducing consumption during stop-and-go driving.

Real-World Driving Experience

In real-world conditions, the B 200 provides the ideal balance between agility and smoothness. The 48V hybrid system eliminates turbo lag, offering a refined start-off response in city traffic. The 7G-DCT gearbox shifts quickly and imperceptibly, while the integrated hybrid boost supports gentle acceleration.

On highways, the B 220d shines with effortless cruising ability, low noise levels, and remarkable fuel economy—often exceeding 55 mpg (4.2 L/100 km) in mixed driving. The B 180 remains the most efficient for urban commuters, providing a quiet and relaxed character ideal for everyday use.

Driving character summary:

• B 180: Smooth, efficient, and city-friendly
• B 200: Balanced performance and refinement
• B 220d: Strong torque and long-distance efficiency

Handling and Ride Balance

Mercedes has fine-tuned the MacPherson front and multi-link rear suspension setup for the 2025 model, enhancing both comfort and body control. Optional adaptive dampers offer two settings—Comfort and Sport—allowing drivers to choose between relaxed cruising and more responsive handling.

The Dynamic Select system adapts throttle response, transmission mapping, and steering feedback based on selected drive mode. Steering remains light at low speeds for easy parking yet becomes precise and weighted at highway pace, creating an intuitive and confident driving feel.

Performance highlights:

• Dynamic Select drive modes for customizable response
• Optional adaptive suspension with dual settings
• 48V hybrid assist improves throttle smoothness
• Stable handling and minimal body roll in corners

Key Takeaways

• All engines now electrified with 48V hybrid assistance
• Smooth dual-clutch transmissions improve refinement
• Dynamic Select system adapts power delivery and steering
• Excellent real-world economy and effortless daily usability
• Ideal balance of agility, comfort, and Mercedes-level sophistication

The 2025 Mercedes-Benz B-Class may not chase performance records, but its quiet efficiency, hybrid smoothness, and solid dynamics make it one of the most complete compact premium vehicles in its class.

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Driving Experience and Handling

The 2025 Mercedes-Benz B-Class has been meticulously tuned to deliver a driving experience that is smooth, composed, and reassuring. As a compact MPV, it’s designed more for comfort and practicality than outright sportiness—but Mercedes ensures that refinement and precision take center stage. Every aspect of the chassis, suspension, and steering has been enhanced for a more balanced and confident feel on the road.

Ride Comfort and Suspension Tuning

At the heart of the B-Class’s driving comfort lies its enhanced suspension geometry and multi-link rear setup, ensuring both stability and smoothness across varying road surfaces. Engineers have reduced vibration transfer through improved bushing materials, while adaptive damping control (optional) fine-tunes the suspension’s stiffness in real-time.

In Comfort mode, the ride feels supple and absorbent, gliding effortlessly over imperfections. In Sport mode, damping stiffens slightly to provide sharper control during cornering, though the overall feel remains refined and compliant—perfectly in line with Mercedes’ comfort-first DNA.

Ride comfort highlights:

• MacPherson strut front and multi-link rear suspension
• Optional adaptive damping system with Comfort/Sport modes
• Improved insulation from road vibrations
• Predictable body control and balanced weight distribution

Steering Precision and Agility

The electromechanical steering system of the 2025 B-Class provides exceptional clarity and smooth feedback. It’s light for city maneuvering but progressively firmer at higher speeds, promoting both confidence and control. With a tight turning radius of 10.8 meters, it’s particularly agile in urban environments.

The Dynamic Select system also influences steering effort, making transitions between city traffic and highway travel effortless. The vehicle feels planted on winding roads, with minimal understeer and a stable posture even during abrupt maneuvers.

Steering and handling traits:

• Variable-assist electric steering for adaptive response
• Compact 10.8 m turning circle for city agility
• Natural feedback and consistent on-center feel
• Stability at highway speeds with minimal steering corrections

Noise, Vibration, and Harshness (NVH) Refinements

One of the standout improvements in the 2025 B-Class is its cabin isolation. Engineers integrated acoustic foam into the A-pillars and wheel arches, added laminated front glass, and optimized engine mounts for reduced vibration transfer.

At highway speeds, wind noise is subdued, and tire roar is almost inaudible—placing the B-Class near the top of its class in acoustic comfort. The 48V mild-hybrid system also contributes to this refinement by allowing near-silent engine restarts and smoother power transitions during stop-start operation.

NVH refinement features:

• Acoustic insulation in firewall and floorpan
• Laminated windshield glass for wind noise reduction
• Engine mount optimization for vibration control
• 48V hybrid smooth start-stop system

Driving Modes and Adaptive Systems

The Dynamic Select controller offers multiple drive profiles—Eco, Comfort, Sport, and Individual—altering throttle mapping, gear shifts, and steering feedback. Combined with the automatic transmission’s adaptive logic, the car learns from driver input, gradually adjusting shift timing for optimal comfort and responsiveness.

In Eco mode, regenerative energy recuperation and coasting functions maximize efficiency, while Sport mode sharpens throttle and gear responses for a livelier feel.

Driving mode characteristics:

• Eco: Prioritizes efficiency and smooth throttle input
• Comfort: Balanced, everyday setting with adaptive damping
• Sport: Sharper throttle, tighter body control
• Individual: Fully customizable driver configuration

Key Takeaways

• Remarkably composed and refined for a compact MPV
• Adaptive suspension and Dynamic Select enhance versatility
• 48V hybrid integration smooths power delivery and vibration
• Exceptionally quiet cabin with premium NVH treatment
• Balanced dynamics for both urban agility and highway comfort

The 2025 Mercedes-Benz B-Class isn’t just practical—it’s poised, quiet, and confident. By combining supple ride comfort with agile handling, it redefines how a family-oriented Mercedes can feel behind the wheel: relaxed yet engaging, intelligent yet intuitive.

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Interior Design and Comfort Features

The 2025 Mercedes-Benz B-Class interior demonstrates how a compact MPV can deliver true premium refinement. Mercedes has focused on digital clarity, ergonomic perfection, and a lounge-like atmosphere, blending practicality with luxury in a space that feels far beyond its segment. The result is a cabin that balances family comfort with the sophistication of a C-Class.

Design Language and Material Quality

Inside, the B-Class reflects Mercedes’ “Sensual Purity” design philosophy—clean lines, floating screens, and elegant textures create a light, airy ambiance. The dashboard houses dual digital displays that seamlessly blend into the center console, framed by turbine-style air vents reminiscent of the A-Class and CLA.

High-quality materials dominate every surface. New recycled microfiber upholstery options, soft-touch door panels, and decorative open-pore wood or aluminum trims elevate the cabin’s aesthetic. Subtle ambient lighting (now extended to door pockets and footwells) allows full customization with 64 color options, turning the interior into a personalized environment.

Interior highlights:

• Minimalist, high-tech dashboard design
• Dual digital displays with floating effect
• Recycled microfiber or ARTICO leather upholstery
• 64-color ambient lighting with animation modes
• New trim inlays: wood, carbon-fiber style, and polished metal

Seating Comfort and Ergonomic Excellence

The 2025 B-Class prioritizes passenger comfort with intelligently designed seats that support posture and reduce fatigue. The Comfort Seat Package introduces four-way lumbar adjustment, extendable thigh support, and ventilation and heating functions for front passengers.

Rear passengers benefit from excellent legroom and adjustable backrests. The elevated seating position not only improves visibility but also simplifies entry and exit—one of the B-Class’s most practical traits. Optional multicontour seats with massage further enhance long-distance comfort.

Seat comfort features:

• Heated and ventilated front seats
• Adjustable lumbar and thigh support
• Optional massage and multicontour functions
• Spacious second row with reclining backrests
• Ergonomically positioned controls and wide door openings

Interior Dimensions and Space Overview

Measurement	Front (in)	Rear (in)
Headroom	40.3	38.6
Legroom	41.1	37.8
Shoulder Room	56.3	55.1
Cargo Capacity	16.6 cu ft	53.5 cu ft (rear seats folded)

The versatile interior design supports family life without compromising comfort. The rear bench folds in a 40:20:40 split, enabling flexible configurations for passengers and cargo. With seats folded flat, the B-Class transforms into a small cargo carrier while retaining its premium cabin feel.

Acoustic Refinement and Ambient Experience

The cabin environment of the 2025 B-Class is defined by tranquility. Mercedes enhanced insulation in the floorpan and A-pillars, while acoustic laminated glass minimizes external noise. The result is a serene interior where even at highway speeds, conversation remains calm and undisturbed.

The THERMOTRONIC dual-zone climate control system ensures consistent comfort throughout the cabin, supported by an integrated air filtration system that removes pollen and fine dust particles. When combined with the ambient lighting and optional Burmester audio, the interior becomes an oasis of calm and clarity.

Comfort and atmosphere features:

• THERMOTRONIC dual-zone climate control
• Air filtration and ionization system
• Burmester surround sound with 12 speakers
• Enhanced cabin insulation for quiet travel
• Mood lighting synced with drive modes

Key Takeaways

• Digitally advanced, minimalist, and premium interior design
• Comfort-focused seating and versatile cabin layout
• Enhanced sound insulation for luxury-level refinement
• Flexible cargo area with easy-access design
• Distinct Mercedes ambiance in a compact footprint

The 2025 Mercedes-Benz B-Class interior perfectly embodies “everyday luxury.” It’s a calm, modern, and intelligent space—crafted to provide the comfort of a larger Mercedes while remaining as practical as a family-focused MPV.

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Safety and Driver Assistance Systems Overview

The 2025 Mercedes-Benz B-Class takes a major step forward in active and passive safety, integrating the latest generation of Mercedes-Benz Intelligent Drive technologies. These systems don’t just react—they anticipate. Through an intricate web of sensors, radar modules, and cameras, the B-Class actively monitors its surroundings to protect occupants and prevent accidents before they occur.

Active Safety and Driver Assistance Technologies

The latest Driving Assistance Package introduces enhanced semi-autonomous features, making the B-Class one of the safest vehicles in its class. The Active Distance Assist DISTRONIC system can maintain a set distance from the car ahead, braking and accelerating automatically in stop-and-go traffic. The Active Steering Assist keeps the car centered in its lane, even through gentle curves, while Traffic Sign Assist detects and displays speed limits in real time.

For urban safety, Active Brake Assist can recognize pedestrians and cyclists, autonomously applying braking pressure when needed. Evasive Steering Assist also intervenes during emergency avoidance maneuvers, helping the driver maintain control.

Active safety highlights:

• Active Brake Assist with pedestrian and cyclist detection
• Active Distance Assist DISTRONIC with stop-and-go functionality
• Lane Keeping and Steering Assist for semi-autonomous cruising
• Traffic Sign Recognition with speed adaptation
• Evasive Steering Assist for safe obstacle avoidance

Passive Safety and Structural Integrity

Mercedes has engineered the B-Class with a reinforced safety cell using high-strength steel and aluminum composite materials to absorb and distribute crash forces efficiently. The energy-absorbing crumple zones and rigid passenger cell protect occupants from all directions, while the PRE-SAFE® system prepares the vehicle if a collision becomes imminent.

When activated, PRE-SAFE® tightens seatbelts, adjusts seating positions, and even closes windows or the sunroof to reduce injury risk. In the event of an accident, post-collision braking automatically engages to prevent secondary impacts.

Passive safety highlights:

• Rigid safety cell with multi-material construction
• PRE-SAFE® system with anticipatory occupant protection
• Nine-airbag configuration, including side and knee airbags
• Automatic post-collision braking
• Reinforced floor and door structures for enhanced impact control

Parking Assistance and Visibility Systems

Parking in tight spaces becomes effortless with Active Parking Assist and PARKTRONIC sensors, which can autonomously steer the car into parallel or perpendicular spots. The 360° Surround View Camera provides a bird’s-eye view of the surroundings, making obstacle detection easier.

Additionally, the LED High Performance headlamps now feature Adaptive Beam Assist, automatically adjusting the light cone for optimal illumination without blinding oncoming traffic. Optional Multibeam LED headlights further refine this with precise light pattern control for weather and terrain conditions.

Visibility and parking features:

• Active Parking Assist with auto-steering and braking
• 360° Surround View Camera for full visibility
• Adaptive Beam Assist for automatic high-beam control
• Blind Spot Assist with exit warning function
• Optional Multibeam LED lighting system

Safety Integration and Digital Monitoring

The 2025 B-Class introduces improved sensor fusion—a system that integrates radar, camera, and ultrasonic data into a unified perception model. This allows faster and more accurate detection of obstacles and road users. The Driver Attention Assist monitors steering input and eye movement, gently alerting the driver to take breaks when fatigue is detected.

Safety functions are regularly updated through over-the-air (OTA) software, ensuring that even years after purchase, the vehicle remains equipped with the latest safety algorithms and assistance features.

Intelligent safety integration:

• Sensor fusion technology for precise environmental mapping
• Driver Attention Assist with fatigue detection alerts
• Continuous OTA updates for driver-assistance calibration
• Integration with Mercedes Me Connect for remote diagnostics

Key Takeaways

• Advanced Mercedes-Benz Intelligent Drive active safety suite
• PRE-SAFE® and nine-airbag protection as standard
• Adaptive LED and Multibeam lighting for optimal visibility
• Active Parking Assist simplifies urban maneuvering
• Constantly updated digital safety through OTA enhancements

The 2025 Mercedes-Benz B-Class doesn’t just protect—it anticipates. By integrating predictive safety, advanced lighting, and driver-awareness technologies, it sets new standards for reassurance and confidence in the compact luxury class.

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Technology and Infotainment: Inside the MBUX 2.0 Experience

The 2025 Mercedes-Benz B-Class redefines what “smart compact luxury” means through the integration of MBUX 2.0, the latest evolution of Mercedes’ intelligent infotainment platform. This system transforms the cabin into an interactive, voice-driven digital space—seamlessly connecting driver, passengers, and environment in one intuitive ecosystem.

MBUX 2.0 Interface and Display Layout

At the core of the 2025 B-Class interior is the dual-display setup, consisting of a 7-inch digital instrument cluster and a 10.25-inch central touchscreen as standard. Buyers can upgrade to the dual 10.25-inch widescreen configuration, creating a panoramic digital cockpit similar to larger Mercedes models.

The MBUX 2.0 software delivers faster response times, clearer graphics, and new AI-based menu logic that reduces the number of taps needed to access common functions. Its “Zero Layer” interface intelligently prioritizes relevant options—like navigation or media—based on time of day, location, and driver habits.

Display and interface highlights:

• Dual 10.25-inch widescreen setup (optional)
• Faster, AI-enhanced menu navigation
• “Zero Layer” display with context-aware shortcuts
• Customizable digital instrument themes
• Crisp, high-resolution graphics optimized for daylight readability

Voice and Gesture Control Improvements

The “Hey Mercedes” voice assistant has evolved into a conversational co-driver. It now understands natural speech patterns, allowing commands like “I’m cold” or “Navigate to home” without predefined phrasing. Contextual awareness lets it adjust climate, lighting, or media automatically.

Additionally, the system supports gesture control—simple hand motions allow volume adjustments, call acceptance, or navigation map zooming without physical contact. These features enhance safety by keeping the driver’s attention on the road while maintaining seamless interactivity.

AI and control features:

• Natural-language voice recognition via “Hey Mercedes”
• Multi-command processing for complex requests
• Gesture control for essential infotainment functions
• Continuous improvement through over-the-air updates
• Adaptive AI personalization for multiple driver profiles

Connectivity and Smart Integration

The B-Class transforms into a connected digital hub with Mercedes Me Connect, offering real-time access to vehicle data and remote features. Drivers can pre-condition the climate, lock or unlock the car, or send destinations directly to the navigation system via smartphone.

Apple CarPlay and Android Auto are wireless, while Bluetooth 5.0 ensures faster pairing and more stable connections. The onboard Wi-Fi hotspot keeps passengers connected, and USB-C fast-charging ports support high-speed device charging across all seating rows.

Connectivity highlights:

• Wireless Apple CarPlay and Android Auto
• Mercedes Me Connect app for remote vehicle control
• Built-in Wi-Fi hotspot for up to 8 devices
• USB-C fast-charging across all rows
• Cloud-based navigation with real-time traffic and weather data

Audio and Sensory Experience

For audiophiles, the optional Burmester Surround Sound System delivers a premium listening experience with 12 high-performance speakers and advanced sound optimization technology. The system adjusts tone and balance automatically depending on seating position and cabin acoustics.

The Energizing Comfort feature connects audio, lighting, and climate settings into immersive wellness programs such as Vitality, Freshness, and Warmth, turning routine drives into sensory experiences. Ambient lighting can now sync with music rhythm, adding another layer of personalization.

Audio and ambiance features:

• Burmester surround sound system with dynamic EQ
• Energizing Comfort modes combining light, sound, and climate
• Active noise compensation for quieter cabins
• Ambient lighting synced with sound profiles
• Acoustic-tuned cabin with balanced frequencies

Key Takeaways

• Latest MBUX 2.0 infotainment system with AI learning
• Natural voice and gesture control for effortless usability
• Mercedes Me Connect for digital lifestyle integration
• Premium Burmester audio and wellness-focused comfort modes
• Personalized, adaptive, and intelligent digital cockpit experience

The 2025 Mercedes-Benz B-Class bridges innovation and intuition. By transforming everyday technology into emotional intelligence, it ensures every journey feels connected, effortless, and distinctly Mercedes.

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Fuel Efficiency and Environmental Performance

The 2025 Mercedes-Benz B-Class represents Mercedes’ most efficient iteration of the model to date, engineered to reduce emissions without compromising refinement or performance. With its new generation of 48V mild-hybrid systems, optimized aerodynamics, and advanced thermal management, the B-Class achieves impressive real-world economy and low environmental impact—setting the benchmark among premium compact MPVs.

Hybrid Technology and Energy Recuperation

All petrol and diesel engines in the 2025 B-Class now feature an integrated 48-volt electrical system and belt-driven starter-generator (RSG). This setup provides up to 14 horsepower (10 kW) of electric assistance during acceleration while enabling silent engine restarts and extended coasting.

During deceleration, kinetic energy is recovered and stored in a small lithium-ion battery, which powers vehicle electronics and supports the start-stop system. This integration not only enhances responsiveness but also cuts fuel consumption by up to 10% compared to the previous model.

Hybrid efficiency highlights:

• 48V mild-hybrid technology standard across all variants
• Energy recuperation during braking and coasting
• Smooth, quiet start-stop operation
• Up to 10% fuel savings over 2023 model year

Real-World Fuel Consumption

The combination of aerodynamic optimization, efficient transmissions, and lightweight design gives the 2025 B-Class class-leading efficiency in both petrol and diesel form. Real-world data indicates strong economy figures even under mixed driving conditions.

Estimated Fuel Economy (WLTP):

Model	Powertrain	Combined (mpg)	CO₂ (g/km)
B 180	1.3L Turbo Mild-Hybrid	49–52 mpg	118–125
B 200	1.3L Turbo Mild-Hybrid	46–50 mpg	122–130
B 220d	2.0L Diesel Mild-Hybrid	57–61 mpg	110–115

The B 220d remains the most efficient option, combining low-end torque with exceptional highway fuel economy, making it ideal for high-mileage drivers. The B 180, meanwhile, excels in urban environments where its hybrid boost frequently engages, providing smooth progress and low emissions.

Aerodynamics and Thermal Management

Efficiency in the B-Class extends far beyond the engine. Mercedes’ engineers refined the body’s airflow to achieve a Cd of 0.26, minimizing drag and improving stability. Underbody panels and a redesigned roof spoiler optimize turbulence around the rear axle, reducing lift at higher speeds.

The thermal management system further enhances efficiency by regulating coolant flow and controlling cabin heating through waste-heat recovery. The result is consistent performance, reduced energy loss, and improved cabin comfort in both cold and warm conditions.

Efficiency-focused design elements:

• Cd 0.26 aerodynamic profile
• Underbody smoothing and optimized airflow channels
• Active grille shutters improve drag and cooling balance
• Thermal management system uses engine heat for HVAC efficiency

Eco Assist and Intelligent Driving Modes

The Eco Assist system analyzes topography, traffic data, and driving habits to suggest optimal throttle and braking inputs for maximum efficiency. When coasting or approaching intersections, the system gently decouples the drivetrain to reduce drag losses.

Through the Dynamic Select controller, drivers can engage Eco mode, which prioritizes hybrid support, early upshifts, and regenerative braking intensity. This system, paired with predictive navigation, even recommends ideal routes based on charging opportunities and energy usage.

Eco optimization functions:

• Eco Assist predictive guidance for energy-efficient driving
• Dynamic Select (Eco mode) with adaptive hybrid logic
• Predictive navigation for optimized fuel use
• Intelligent coasting and brake recuperation systems

Sustainability and Emissions Control

Mercedes continues its commitment to sustainability by reducing lifecycle CO₂ emissions through responsible sourcing and manufacturing. Interior materials now include recycled microfibers and bio-based polymers, while the engine assembly plants in Germany operate on renewable energy.

In addition, the 2025 B-Class meets the latest EURO 6e emissions standard, utilizing AdBlue injection for diesel engines and gasoline particulate filters (GPF) for petrol variants to minimize environmental impact.

Sustainability measures:

• EURO 6e compliance for all engines
• Use of recycled and renewable interior materials
• Carbon-neutral production in European plants
• AdBlue and GPF technology reduce NOx and particulates

Key Takeaways

• Standard 48V hybrid system enhances economy and response
• Class-leading fuel efficiency and low emissions
• Intelligent Eco Assist and aerodynamic optimization
• Sustainable materials and carbon-neutral manufacturing
• Built to deliver modern efficiency with Mercedes-level comfort

The 2025 Mercedes-Benz B-Class seamlessly blends sustainability with sophistication. Through advanced hybridization and thoughtful engineering, it proves that premium driving pleasure and environmental responsibility can coexist without compromise.

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Dimensions and Everyday Practicality

The 2025 Mercedes-Benz B-Class remains one of the most versatile vehicles in the compact premium class, combining intelligent packaging with a spacious, ergonomic layout. It’s built to make everyday life easier—whether you’re commuting through busy city streets or embarking on a weekend getaway with the family. Every millimeter of the car’s design is engineered for usability, visibility, and effortless flexibility.

Exterior Dimensions and Proportions

Despite its compact footprint, the B-Class offers generous interior volume, thanks to its long wheelbase and upright design. Its aerodynamic proportions maintain elegance while optimizing efficiency and cabin space.

Exterior Dimensions Overview

Measurement	Specification
Length	4,429 mm (174.4 in)
Width (w/mirrors)	1,796 mm (70.7 in) / 1,992 mm (78.4 in)
Height	1,562 mm (61.5 in)
Wheelbase	2,729 mm (107.4 in)
Turning Circle	10.8 m

These dimensions allow the B-Class to feel solid and stable on highways, yet nimble in tight urban environments. The short front and rear overhangs improve maneuverability, while a high seating position enhances visibility and driver confidence.

Exterior practicality highlights:

• Compact proportions for urban agility
• Elevated seating for improved visibility
• Wide-opening doors for easy access
• Optional hands-free power tailgate
• Optimized turning radius for city parking

Interior Space and Passenger Comfort

Mercedes engineers prioritized interior space efficiency to ensure every occupant enjoys generous legroom and headroom. The tall roofline provides a sense of openness, while the panoramic glass roof floods the cabin with light, enhancing comfort on long drives.

Rear passengers benefit from adjustable backrests and sliding seat functionality (optional), making it possible to expand cargo space or legroom as needed. The flat floor design maximizes usable space for all passengers.

Interior Space and Comfort

Area	Front	Rear
Headroom	40.3 in	38.6 in
Legroom	41.1 in	37.8 in
Shoulder Room	56.3 in	55.1 in

Passenger comfort features:

• Adjustable rear bench for flexible configurations
• Panoramic roof and large windows for airy feel
• Ergonomic seat design with optimized lumbar support
• Smart storage compartments in doors and console

Cargo Capacity and Flexibility

The B-Class remains one of the most practical cars in its category, offering 16.6 cubic feet (470 liters) of boot space with the rear seats upright and up to 53.5 cubic feet (1,540 liters) when folded flat. The 40:20:40 split-folding seats allow partial folding for long items without sacrificing passenger space.

An adjustable luggage floor and underfloor storage compartment provide additional organization for smaller items, while the low loading sill makes lifting heavy bags effortless.

Cargo flexibility overview:

• 470–1,540 L cargo volume
• 40:20:40 split-fold rear seats
• Adjustable boot floor and hidden compartment
• Electric tailgate with gesture control (optional)
• Fold-flat seats for extended storage

Practical Features for Everyday Use

Beyond its spaciousness, the B-Class integrates clever solutions that enhance daily convenience. Features like keyless entry, electric parking brake, and automatic hold function simplify driving in urban traffic. The rear-axle steering geometry enhances parking agility, while wide door apertures make loading child seats or bulky items effortless.

Practicality extends to smart storage—cup holders, multiple USB-C charging ports, a large glove box, and door bins designed for full-size bottles make the cabin highly functional for families.

Everyday usability highlights:

• Keyless-Go and push-button start
• Electric parking brake with auto-hold
• Multiple USB-C and wireless charging points
• Rear-axle geometry optimized for easy maneuvering
• Ample storage across cabin zones

Key Takeaways

• Compact dimensions, maximum cabin usability
• Flexible seating with up to 1,540 L cargo capacity
• Ergonomic design supports comfort and practicality
• Everyday ease with Keyless-Go and auto-hold systems
• Designed for urban efficiency and family adaptability

The 2025 Mercedes-Benz B-Class proves that practicality can still feel premium. With clever packaging, flexible seating, and intelligent use of space, it elevates everyday driving into an experience defined by ease, comfort, and versatility.

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Common Issues and Long-Term Reliability Insights

The 2025 Mercedes-Benz B-Class demonstrates Mercedes’ commitment to quality and refinement within the compact segment, building on years of reliability data from the A-Class and previous B-Class models. While earlier generations faced minor electronic quirks, this new iteration benefits from improved software integration, simplified hybrid hardware, and predictive diagnostic systems, greatly enhancing its long-term dependability.

Powertrain Reliability and Hybrid Durability

The 48V mild-hybrid system plays a major role in the B-Class’s reliability evolution. The belt-driven starter-generator (RSG) has been upgraded with reinforced bearings and optimized cooling, reducing mechanical wear. The 1.3-liter turbo petrol and 2.0-liter diesel engines, developed in collaboration with Renault and Mercedes’ in-house tuning division, have been tested extensively for long-term stability.

Field data suggests minimal drivetrain wear even after extended urban use, and fuel system components now feature anti-sulfur coatings to prevent injector clogging—a known issue in earlier B-Class generations.

Powertrain reliability highlights:

• Reinforced RSG starter-generator for longer service life
• Enhanced cooling circuits for hybrid components
• Turbocharger bearings designed for extended durability
• Proven 1.3L petrol and 2.0L diesel powertrains
• Optimized fuel injection systems for clean combustion

Electronics and Infotainment Stability

Previous generations occasionally suffered from MBUX software slowdowns and sensor calibration faults. The 2025 model’s MBUX 2.0 system eliminates these issues with a dedicated processing unit and expanded RAM capacity. OTA (over-the-air) updates allow continuous software refinement, minimizing the need for dealer visits.

In addition, the electrical architecture has been redesigned with fewer control units and more centralized communication—reducing wiring complexity and improving reliability across the infotainment, lighting, and driver-assistance systems.

Electronics improvements:

• Streamlined electronic control unit (ECU) architecture
• Faster MBUX 2.0 software reduces glitches
• OTA updates for long-term system optimization
• Integrated self-diagnostic functions for predictive maintenance

Build Quality and Mechanical Components

The 2025 B-Class benefits from upgraded assembly standards in Mercedes’ Rastatt and Kecskemét production plants. The use of high-tensile steel and corrosion-resistant coatings ensures superior long-term body durability. The suspension bushings, brake components, and steering rack have also been revised for extended service intervals.

In the cabin, Mercedes focused on long-term material integrity—soft-touch panels and microfiber upholstery resist UV discoloration, while ambient lighting modules and control buttons have been stress-tested for over 50,000 cycles.

Mechanical and material reliability:

• Galvanized steel body panels for corrosion resistance
• Reinforced suspension joints for reduced wear
• Durable interior materials with UV protection
• High-quality switchgear and button longevity testing

Maintenance Predictability and Diagnostics

The B-Class employs predictive diagnostics, powered by Mercedes’ ASSYST PLUS and Mercedes Me Connect systems. These monitor oil quality, brake pad wear, and hybrid system temperature to predict upcoming maintenance needs. The system also alerts owners via app notifications, allowing proactive scheduling before issues arise.

Maintenance costs remain lower than previous generations thanks to the reduced number of serviceable mechanical parts and extended service intervals for fluids and filters.

Predictive maintenance features:

• ASSYST PLUS predictive service scheduler
• Remote monitoring via Mercedes Me Connect
• Automated diagnostic data sharing with service centers
• Reduced component replacement frequency

Known Concerns and Preventive Recommendations

While reliability has improved, owners are advised to regularly update MBUX software and maintain proper coolant and brake fluid intervals to preserve hybrid efficiency. Minor issues—such as sensor recalibrations after windshield replacement or occasional door seal creaks in early production units—can occur but are easily resolved under warranty.

Preventive reliability tips:

• Keep MBUX 2.0 software updated over-the-air
• Perform annual fluid and filter checks
• Monitor RSG hybrid system temperature in extreme weather
• Address sensor calibration after maintenance

Key Takeaways

• Reinforced hybrid and powertrain components for longevity
• Major electronic and software reliability improvements
• High-quality materials designed for long-term integrity
• Predictive diagnostics reduce maintenance surprises
• Overall reliability among the best in the compact luxury class

The 2025 Mercedes-Benz B-Class shows how refinement and reliability can coexist. Through continuous software evolution, improved hybrid architecture, and superior build quality, it delivers consistent performance and durability well beyond its segment’s expectations.

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Maintenance and Ownership Experience Review

The 2025 Mercedes-Benz B-Class delivers a truly modern ownership experience—where technology, low maintenance, and digital connectivity come together to make car care almost effortless. By integrating predictive diagnostics, extended service intervals, and app-based maintenance management, Mercedes has transformed the routine of owning a compact MPV into a seamless and intelligent process.

Service Intervals and Maintenance Schedule

Thanks to the simplified 48V mild-hybrid architecture and optimized lubrication systems, the 2025 B-Class requires far less mechanical maintenance than traditional engines. The ASSYST PLUS system automatically calculates service intervals based on driving conditions and usage patterns, displaying reminders in the digital cluster and via the Mercedes Me Connect app.

Routine maintenance tasks are straightforward and cost-efficient, focusing mainly on fluid changes, filters, and software updates rather than mechanical replacements.

Recommended maintenance schedule:

Maintenance Task	Interval	Notes
Oil and filter change	Every 15,000 miles or 1 year	Synthetic Mercedes-Benz approved oil
Brake fluid replacement	Every 2 years	Ensures hydraulic integrity
Coolant inspection	Every 15,000 miles	Maintains thermal management efficiency
Cabin air filter	Every 15,000 miles	Improves air quality
Software updates (OTA)	As available	Enhances system reliability
Tire rotation/alignment	Every 10,000 miles	Preserves ride comfort

The 48V hybrid system requires no special maintenance, apart from periodic visual inspection of electrical components during scheduled servicing.

Digital Ownership and Remote Management

The Mercedes Me Connect platform acts as the digital command center for ownership. It provides instant access to service history, remote diagnostics, and predictive alerts. Owners can schedule service appointments directly through the app, receive push notifications about fluid levels or tire pressure, and even initiate remote vehicle diagnostics before visiting a service center.

This transparency ensures that both driver and technician have synchronized data, reducing service time and eliminating guesswork.

Digital ownership advantages:

• Real-time service tracking and scheduling
• Predictive maintenance alerts for wear items
• Remote diagnostics via mobile app
• Digital Service Booklet stores complete history
• OTA updates improve vehicle systems post-service

Warranty Coverage and Support Plans

The B-Class is supported by Mercedes’ standard 4-year / 50,000-mile vehicle warranty and an 8-year / 100,000-mile hybrid component warranty covering the belt-driven starter-generator, inverter, and electrical systems.

Customers seeking added assurance can opt for Mercedes-Benz ServiceCare Extended Plans, which include prepaid maintenance and extended warranty protection. These plans also cover roadside assistance, ensuring uninterrupted support throughout the ownership period.

Warranty and support overview:

• 4-year / 50,000-mile general warranty
• 8-year / 100,000-mile hybrid system warranty
• Optional ServiceCare Extended coverage
• 24/7 roadside assistance and towing service
• Global service network for convenience

Cost Efficiency and Long-Term Ownership

The mild-hybrid setup dramatically reduces running costs. With fewer moving parts, no timing belt, and regenerative braking extending pad life, the B-Class requires less mechanical intervention over time. On average, annual service costs are estimated to be 15–20% lower than those of earlier B-Class models.

Insurance premiums are moderate due to comprehensive safety systems, and resale values remain strong, supported by Mercedes’ brand reputation and the car’s hybrid technology appeal.

Ownership efficiency highlights:

• Lower servicing costs than previous models
• Extended brake component lifespan via regeneration
• Reduced wear through hybridized powertrain
• Strong resale value retention
• Environmentally conscious long-term sustainability

User Experience and Comfort in Daily Use

Owners report that living with the B-Class feels effortless. The quiet hybrid start-stop transitions, comfortable seating ergonomics, and digital convenience systems make it ideal for urban commuting and family travel alike.

The optional Energizing Comfort package adds personalized wellness programs that adjust lighting, climate, and seat settings to reduce fatigue during long journeys—further elevating day-to-day usability.

Everyday user experience highlights:

• Smooth, silent daily operation
• Predictive maintenance notifications
• Minimal downtime with OTA software fixes
• Ergonomic comfort and advanced driving aids
• Easy digital connectivity through Mercedes Me

Key Takeaways

• ASSYST PLUS predictive servicing minimizes maintenance effort
• Strong warranty coverage and optional ServiceCare plans
• Mercedes Me Connect ensures fully digital ownership
• Reduced costs and downtime through intelligent hybrid design
• Ownership experience defined by comfort, reliability, and simplicity

The 2025 Mercedes-Benz B-Class is engineered not just to drive effortlessly—but to live effortlessly. Through predictive systems, remote diagnostics, and exceptional durability, it represents the future of ownership for compact luxury vehicles.

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Frequently Asked Questions About the 2025 Mercedes-Benz B-Class

What are the main updates in the 2025 Mercedes-Benz B-Class?

The 2025 model introduces an upgraded MBUX 2.0 infotainment system, standard 48V mild-hybrid engines, and new aerodynamic enhancements that improve efficiency. Design changes include a refreshed grille, new LED lighting signatures, and updated wheel designs. Inside, sustainable materials and improved ambient lighting elevate comfort and style, while driver-assistance features have been expanded to provide semi-autonomous functionality.

What engines are available in the 2025 B-Class?

The range includes three mild-hybrid options: the B 180 and B 200 with 1.3-liter turbocharged petrol engines, and the B 220d with a 2.0-liter diesel. All feature 48V hybrid assistance providing an additional 14 hp boost. Each is paired with a dual-clutch automatic transmission (7G-DCT or 8G-DCT) for smooth, efficient performance in both city and highway conditions.

How efficient is the new B-Class in real-world driving?

Thanks to its 48V system and improved aerodynamics, the B-Class achieves impressive real-world efficiency. The B 180 returns up to 52 mpg, while the B 220d can reach 61 mpg in combined WLTP testing. The hybrid system also supports energy recuperation and coasting functions, significantly lowering fuel consumption and emissions during daily commuting.

Is the 2025 B-Class suitable for families?

Absolutely. The B-Class is designed as a premium family MPV, offering excellent visibility, flexible interior configurations, and generous space for up to five adults. The split-folding rear seats, large cargo area (up to 1,540 liters), and extensive safety systems make it an ideal companion for families needing comfort and practicality in a refined package.

What safety systems are included in the 2025 B-Class?

Standard features include Active Brake Assist, Lane Keeping Assist, Driver Attention Assist, and PRE-SAFE® occupant protection. The optional Driving Assistance Package adds Active Distance DISTRONIC, Steering Assist, and Blind Spot Monitoring. The structure also integrates nine airbags and a rigid passenger cell, ensuring exceptional crash protection and occupant safety.

How does the MBUX 2.0 infotainment system work?

The upgraded MBUX 2.0 system uses AI-based learning, natural voice control, and an intuitive “Zero Layer” interface that prioritizes key functions like navigation or media based on context. It supports wireless Apple CarPlay and Android Auto, gesture control, and over-the-air updates. The display is crisp and responsive, providing an intuitive digital experience comparable to larger Mercedes models.

What are the maintenance requirements for the B-Class?

Maintenance is minimal, thanks to the simplified mild-hybrid setup. Routine service is recommended every 15,000 miles or one year under the ASSYST PLUS predictive schedule. The system monitors wear items, fluid levels, and software updates automatically. Brake pads last longer due to regenerative braking, and OTA diagnostics reduce workshop visits, improving convenience and cost efficiency.

How reliable is the 2025 B-Class in the long term?

The new B-Class benefits from revised hybrid components, improved electronic architecture, and predictive diagnostics, which significantly enhance reliability. The 48V system is maintenance-free, while MBUX software stability is maintained through regular OTA updates. Owners can expect long-term durability, supported by Mercedes’ 8-year/100,000-mile hybrid warranty and superior build quality.

What comfort features define the 2025 B-Class interior?

Inside, the B-Class delivers a serene and ergonomic environment. Features include ventilated and heated front seats, ambient lighting with 64 colors, and THERMOTRONIC dual-zone climate control. The Energizing Comfort system synchronizes lighting, climate, and audio to enhance well-being. Premium materials and superior insulation make it one of the most comfortable cabins in its class.

Is the 2025 Mercedes-Benz B-Class environmentally friendly?

Yes. The B-Class is produced in carbon-neutral facilities using recycled and renewable interior materials. All engines meet EURO 6e emissions standards, and the 48V mild-hybrid system improves fuel efficiency by reducing CO₂ output. This model plays a central role in Mercedes’ Ambition 2039 sustainability initiative toward net-zero emissions mobility.