2021 BMW 1 Series: Performance and Features

The 2021 BMW 1 Series represents a major evolution in the premium compact hatchback segment. With its dynamic handling, efficient engine lineup, and luxurious interior, it’s designed to bring traditional BMW driving pleasure to a more practical, everyday format. Offering advanced technology, strong safety systems, and a variety of powertrains—including high-performance and all-wheel-drive options—the 1 Series competes directly with models like the Audi A3 and Mercedes A-Class. In this comprehensive guide, we’ll explore everything from its key updates and engine choices to its driving dynamics, interior features, common issues, and ownership experience.

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What’s New in the 2021 BMW 1 Series?

The 2021 BMW 1 Series continues to build on the completely redesigned third generation (F40) introduced in 2019, bringing subtle updates to technology, equipment, and personalization options. While there’s no major facelift this year, BMW focuses on enhancing comfort, connectivity, and efficiency, making the 1 Series an even more attractive choice in the premium compact hatchback market.

Key Updates for 2021

• Expanded Standard Equipment: Features such as dual-zone automatic climate control, LED headlights, and connected digital services are now standard on more trims, improving overall value.
• Improved Infotainment System: The iDrive 7 interface receives software refinements for smoother operation, better smartphone integration, and updated navigation graphics.
• New Personalization Options: Additional exterior colors, wheel designs, and interior trim finishes were introduced, allowing customers to tailor their 1 Series more than before.
• M Sport Package Enhancements: Trims equipped with the M Sport package now benefit from sportier suspension tuning, upgraded design elements, and optional adaptive dampers for improved ride control.
• Efficiency Optimizations: Minor tweaks to the engines and transmission software improve real-world fuel economy, particularly in diesel and 118i petrol variants.

Design and Platform Overview

Built on BMW’s UKL2 front-wheel-drive platform, the 2021 1 Series differs from its predecessors by moving away from the traditional rear-wheel-drive layout. This change allows for more interior space and improved packaging, while optional xDrive all-wheel drive retains BMW’s signature dynamic feel. Externally, its sharp lines, aggressive kidney grille, and modern LED lighting give it a sporty, premium presence on the road.

Why These Updates Matter

These 2021 refinements make the 1 Series more technologically advanced and comfortable, while maintaining its distinctive BMW character. By focusing on connectivity, personalization, and subtle efficiency gains, BMW ensures the 1 Series remains competitive against the Audi A3, Mercedes-Benz A-Class, and Volkswagen Golf in the fiercely contested premium hatchback segment.

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Engine Options and Performance Overview

The 2021 BMW 1 Series offers a diverse range of petrol, diesel, and performance-oriented engines, catering to both efficiency-focused drivers and enthusiasts who want a sportier experience. All powertrains are turbocharged and paired with either a manual or automatic transmission, with certain variants featuring xDrive all-wheel drive for enhanced traction and performance.

Petrol Engine Lineup

1. 118i (1.5-liter 3-cylinder)
   • Power: 140 PS (138 hp)
   • Torque: 220 Nm
   • Transmission: 6-speed manual or 7-speed dual-clutch (DCT)
   • Drivetrain: Front-wheel drive
   • 0–100 km/h: ~8.5 seconds
   This engine focuses on efficiency and smooth daily driving. It’s quiet, eager at low revs, and well-suited for urban and light highway use.
2. 120i / 128ti (2.0-liter 4-cylinder)
   • Power: 178–265 PS (175–261 hp) depending on variant
   • Torque: 280–400 Nm
   • Transmission: 7-speed DCT (120i), 8-speed automatic (128ti)
   • Drivetrain: Front-wheel drive (120i), FWD with sport differential (128ti)
   • 0–100 km/h: ~6.1 seconds for 128ti
   The 128ti is positioned as a hot-hatch rival to the VW Golf GTI, delivering sharp throttle response and more dynamic handling than the standard models.
3. M135i xDrive (2.0-liter 4-cylinder)
   • Power: 306 PS (302 hp)
   • Torque: 450 Nm
   • Transmission: 8-speed automatic
   • Drivetrain: xDrive all-wheel drive
   • 0–100 km/h: 4.8 seconds
   This range-topper combines strong performance with everyday usability. The xDrive system provides superb traction, and the engine offers punchy acceleration with a refined exhaust note.

Diesel Engine Options

For long-distance drivers, the 1 Series offers several diesel variants:

• 116d (1.5-liter 3-cylinder): 116 PS, excellent economy for city use.
• 118d / 120d (2.0-liter 4-cylinder): 150–190 PS, smooth power delivery, ideal for highway cruising.
• 120d xDrive: 190 PS with all-wheel drive and 8-speed automatic, combining efficiency with strong traction.

These diesel engines are known for their impressive fuel economy, low-end torque, and quiet operation, making them ideal for high-mileage users.

Transmission and Drivetrain Options

Depending on the variant, buyers can choose between:

• 6-speed manual on base models (rare but engaging)
• 7-speed dual-clutch transmission (DCT) on mid-range petrol engines
• 8-speed torque-converter automatic on higher-output petrol and diesel engines

While most 1 Series models are front-wheel drive, xDrive all-wheel drive is available on the M135i and select diesel versions, enhancing stability and performance in all weather conditions.

Real-World Performance

The 118i is ideal for urban commuting and delivers smooth, efficient performance. The 128ti stands out as a lively, driver-focused hot hatch with excellent cornering balance, while the M135i brings near-sports-car acceleration with everyday refinement. Diesel models provide effortless long-distance cruising with excellent fuel economy, making them popular for European markets.

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Driving Experience and Handling Characteristics

The 2021 BMW 1 Series delivers a driving experience that skillfully blends BMW’s traditional dynamic character with the practicality of a modern front-wheel-drive platform. While the switch from rear-wheel drive to front-wheel drive was initially controversial among enthusiasts, BMW’s engineering ensures the 1 Series remains one of the most engaging hatchbacks in its class, offering precise handling, excellent stability, and a refined ride across all variants.

Steering and Ride Quality

The 1 Series features electrically assisted power steering that is light and responsive in urban settings, while firming up at higher speeds for greater stability. Steering feedback is direct, allowing the driver to place the car confidently in corners.

The suspension setup varies by trim:

• Standard models use a torsion beam rear suspension tuned for comfort and everyday usability.
• M Sport and higher trims gain a multi-link rear setup with sportier tuning, resulting in sharper turn-in and improved composure during spirited driving.
• Adaptive suspension (optional on some trims) allows drivers to toggle between comfort and sportier settings, tailoring the ride to different driving scenarios.

The result is a balanced blend of comfort and agility, making the 1 Series equally at home in city traffic and on winding backroads.

Handling and Chassis Dynamics

Despite its front-wheel-drive architecture, the 1 Series offers impressive handling dynamics, with excellent grip and minimal body roll. The near-perfect weight distribution and rigid chassis contribute to a planted, confident feel through corners. The 128ti variant particularly shines here, with a mechanical Torsen differential and sport suspension that sharpen responses, positioning it as a credible hot hatch competitor.

The M135i xDrive, with its advanced all-wheel-drive system and performance-tuned chassis, elevates handling further. It can distribute torque between the front and rear axles in milliseconds, providing superb traction and cornering confidence even in challenging conditions. Paired with its powerful engine, this setup allows the M135i to rival more expensive performance cars in real-world driving.

Urban Driving and Maneuverability

In daily driving, the 1 Series feels compact and easy to maneuver, aided by precise steering, a tight turning circle, and excellent visibility. Adaptive cruise control, parking sensors, and optional 360° cameras simplify tight-space maneuvers, making urban commuting stress-free.

Highway Stability and Comfort

On the highway, the 1 Series remains calm and composed, with excellent straight-line stability and minimal wind noise. Adaptive dampers further enhance comfort on long journeys, while well-insulated cabins create a premium, quiet atmosphere. Diesel variants, in particular, excel at long-distance cruising thanks to their strong mid-range torque and low fuel consumption.

Overall Driving Feel

The 2021 BMW 1 Series successfully maintains BMW’s hallmark driver engagement while offering the comfort and practicality expected of a modern hatchback. Whether you choose the efficient 118i, the sporty 128ti, or the powerful M135i, the 1 Series delivers a refined yet dynamic driving experience that stands out among premium compact competitors.

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Interior Comfort and Technology Features

The 2021 BMW 1 Series sets a high standard for interior quality and technology in the premium compact hatchback segment. Its cabin blends BMW’s signature driver-focused layout with high-grade materials, advanced digital displays, and thoughtful ergonomics. Despite its compact footprint, the 1 Series provides an upscale and comfortable environment suitable for both daily commuting and long-distance journeys.

Cabin Design and Layout

The interior follows BMW’s modern design language, featuring a clean horizontal dashboard, angled center console toward the driver, and premium materials throughout. The driving position is low and sporty, reminiscent of larger BMW models, while the controls are logically arranged for intuitive operation.

Soft-touch plastics, brushed aluminum trim, and optional ambient lighting give the cabin a refined feel. Higher trims can be optioned with Dakota leather upholstery, heated front seats, and contrast stitching, further elevating the premium atmosphere.

Seating Comfort and Space

The front seats offer excellent support with multi-way manual or power adjustments depending on trim, making it easy to find an ideal driving position. Heated seats and lumbar support are available on mid and upper trims, adding long-distance comfort.

In the rear, space has improved significantly compared to the previous generation, thanks to the switch to a front-wheel-drive layout. Rear legroom and headroom are now competitive with rivals like the Audi A3 and Mercedes A-Class, making the 1 Series more practical for passengers. The flat floor design improves foot space for the middle passenger, while wide-opening doors make entry and exit straightforward.

Storage and Practicality

The 1 Series offers ample cabin storage for a compact car. Large door bins, a spacious glovebox, cupholders, and a center armrest compartment keep everyday items organized. USB-C ports in the front and rear, along with wireless charging on higher trims, ensure that devices remain powered during travel.

Digital Displays and Instrumentation

The 2021 1 Series features BMW’s Live Cockpit digital display setup.

• Standard models come with an analog-digital instrument cluster combined with a central touchscreen.
• Higher trims feature the 10.25-inch digital instrument cluster paired with a 10.25-inch iDrive touchscreen, creating a widescreen digital environment.

The displays are crisp, customizable, and easy to navigate, providing essential information without overwhelming the driver.

Comfort and Refinement

Cabin insulation is excellent for the segment, keeping wind and road noise to a minimum, especially on highway journeys. Optional features such as dual-zone automatic climate control, panoramic sunroof, and premium Harman Kardon audio system add to the sense of luxury and comfort typically expected from larger BMW models.

Overall Cabin Experience

The 2021 BMW 1 Series interior successfully combines premium quality, smart design, and cutting-edge technology. With improved passenger space, intuitive controls, and a refined atmosphere, it feels far more upscale than a typical compact hatchback — making it a genuine alternative to larger, more expensive vehicles for drivers who want luxury in a practical package.

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Safety Systems and Driver Assistance

The 2021 BMW 1 Series is equipped with a comprehensive suite of passive safety features and advanced driver-assistance systems, making it one of the safest options in the premium compact hatchback segment. BMW has integrated many of its high-end safety technologies from larger models into the 1 Series, ensuring both protection and convenience in everyday driving.

Structural Safety and Standard Equipment

Built on BMW’s UKL2 platform, the 1 Series benefits from a rigid body structure that uses high-strength steel in key areas to effectively manage impact forces. The car is designed to absorb and redirect crash energy away from the passenger cabin, maintaining structural integrity in collisions.

Standard passive safety features include:

• Multiple airbags, including front, side, curtain, and driver’s knee airbags
• Anti-lock Braking System (ABS) and Dynamic Stability Control (DSC)
• Traction control for stable acceleration on slippery surfaces
• Tire Pressure Monitoring System (TPMS)
• Automatic emergency braking with pedestrian and cyclist detection

These features provide a strong baseline of protection even on entry-level trims.

Advanced Driver-Assistance Systems

The 2021 1 Series integrates a variety of driver-assistance technologies aimed at reducing driver workload and preventing accidents. Depending on the trim and options, these can include:

• Active Cruise Control with Stop & Go, maintaining a safe following distance even in heavy traffic
• Lane Departure Warning with active steering correction
• Lane Keeping Assist to help center the car within its lane
• Blind Spot Monitoring for safer lane changes
• Cross-Traffic Alert for reversing out of tight spaces
• Traffic Sign Recognition, displaying speed limits and road signs on the digital display
• Parking Assistant with automatic steering during parallel or bay parking
• 360° Surround View Camera for precise maneuvering

These systems work together to create a semi-automated driving experience, particularly useful on highways and in congested urban environments.

Crash Test Performance

The 2021 BMW 1 Series earned top safety ratings in Euro NCAP crash tests, receiving a five-star rating with excellent scores in adult and child occupant protection, as well as advanced safety assist performance. Its active safety systems are praised for their responsiveness and effectiveness in avoiding or mitigating collisions.

Real-World Safety Benefits

In real-world driving, these systems operate smoothly and unobtrusively, offering timely alerts and gentle interventions that support rather than override the driver. The 1 Series’ strong structure, advanced driver aids, and clear visibility combine to create a reassuring and secure driving environment, whether on crowded city streets or high-speed motorways.

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Infotainment and Connectivity (iDrive System)

One of the standout features of the 2021 BMW 1 Series is its advanced infotainment system, powered by the renowned BMW iDrive 7 interface. Known for its clarity, responsiveness, and user-friendly design, iDrive transforms the 1 Series into a genuinely connected premium hatchback, offering drivers a blend of modern digital functionality and intuitive control options.

Central Display and iDrive Controller

At the heart of the system is a 10.25-inch high-resolution touchscreen, available on mid and upper trims, while entry-level models feature an 8.8-inch version. Both are positioned at the perfect angle for driver visibility and ease of use.

Users can control the system in multiple ways:

• Touchscreen gestures, similar to a tablet
• The rotary iDrive controller on the center console, which remains one of the most ergonomic interfaces in the industry
• Steering wheel buttons for quick access to core functions
• Voice commands using BMW’s “Hey BMW” assistant for hands-free operation

This flexibility allows drivers to interact with the system in whatever way feels most natural, reducing distractions on the road.

Smartphone Integration and Connectivity

The 2021 1 Series includes standard Apple CarPlay and Android Auto, now offered wirelessly, eliminating the need for cables in compatible smartphones. This integration enables seamless use of navigation apps like Google Maps and Waze, music streaming platforms, and messaging services directly on the central display.

Additional connectivity features include:

• Bluetooth audio streaming and hands-free calling
• Multiple USB-C ports in the front and rear
• Wireless charging pad (optional) for compatible devices
• BMW ConnectedDrive services, providing real-time traffic information, over-the-air updates, and remote vehicle functions via smartphone app

Navigation and Digital Services

BMW’s native Navigation Professional system is highly regarded for its fast processing and clear 3D mapping. Real-time traffic updates and predictive routing ensure efficient journeys, especially in congested areas. The system also supports voice-guided directions and integrates with BMW’s cloud services for up-to-date map data without the need for manual downloads.

Audio Systems

The standard audio setup provides clear, balanced sound suitable for daily use. However, those seeking a more immersive experience can opt for the Harman Kardon premium sound system, which includes additional speakers and a dedicated amplifier, offering exceptional clarity and depth for music lovers.

Overall Connectivity Experience

The iDrive 7 system in the 2021 BMW 1 Series strikes an excellent balance between advanced digital capability and intuitive usability. Whether through touch, physical controls, or voice commands, it’s designed to keep drivers connected without distraction. Combined with wireless smartphone integration and robust navigation, the 1 Series delivers a premium infotainment experience that rivals larger and more expensive BMW models.

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Fuel Efficiency and Real-World Economy

The 2021 BMW 1 Series offers impressive fuel efficiency across its petrol and diesel engine lineup, thanks to modern turbocharging, efficient transmissions, and aerodynamic design. Whether you prioritize economy for daily commuting or long-distance cruising, the 1 Series provides a range of powertrains that balance performance with low running costs.

Petrol Engine Efficiency

The 118i with its 1.5-liter 3-cylinder engine is the most economical petrol option.

• Combined consumption: 5.0–5.5 L/100 km (43–47 mpg US)
• CO₂ emissions: 114–126 g/km depending on trim and wheel size

This engine performs efficiently in urban settings, aided by BMW’s automatic start-stop system and smart transmission mapping that keeps revs low during steady driving.

The 120i and 128ti variants, equipped with 2.0-liter 4-cylinder engines, naturally consume more fuel but remain efficient for their output:

• 120i: 5.8–6.2 L/100 km (38–41 mpg US)
• 128ti: 6.5–7.0 L/100 km (34–36 mpg US)

These figures make the 128ti particularly competitive among hot hatches, offering spirited performance without excessive fuel use.

The M135i xDrive, being the most powerful, is the thirstiest:

• Consumption: around 7.5–8.0 L/100 km (29–31 mpg US)
  Given its 306 PS output and AWD system, this is still reasonable for the performance level it delivers.

Diesel Engine Efficiency

Diesel variants remain the fuel economy champions, especially for long-distance drivers:

• 116d (1.5-liter): ~4.0–4.3 L/100 km (55–59 mpg US)
• 118d / 120d (2.0-liter): 4.2–4.8 L/100 km (49–56 mpg US)

The 120d xDrive offers AWD capability with only a slight efficiency penalty, making it ideal for drivers in regions with variable weather or those who frequently travel on highways.

Real-World Economy Factors

Real-world fuel efficiency depends on driving style, load, and environment, but several factors contribute to the 1 Series’ economy:

• Lightweight construction and efficient aerodynamics reduce drag.
• Start-stop technology helps conserve fuel in urban traffic.
• Coasting functions in automatic transmissions allow the engine to decouple during steady speeds, reducing consumption on highways.
• Driving Experience Control lets drivers switch between Eco Pro, Comfort, and Sport modes, adapting throttle response and transmission behavior to prioritize efficiency when needed.

Long-Term Efficiency

BMW’s modern turbo engines are designed for low friction and optimized combustion, maintaining efficiency even as the vehicle ages when properly maintained. Diesel variants, in particular, are known for excellent highway economy and high mileage durability, making them popular choices for fleet and long-distance drivers.

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Common Problems and Reliability Insights

The 2021 BMW 1 Series benefits from BMW’s modern engineering and typically delivers strong reliability, especially when properly maintained. However, like any technologically advanced premium vehicle, it has a few recurring issues and ownership considerations that potential buyers and owners should be aware of. Most of these are software-related or wear-and-tear components, rather than major mechanical faults.

Infotainment and Software Glitches

Some owners have reported occasional software bugs with the iDrive 7 system, including:

• Lag when switching between apps or menus
• Intermittent Bluetooth connectivity drops
• Random screen reboots, especially in early software versions

These issues are generally resolved through over-the-air (OTA) or dealership software updates. BMW frequently releases patches to improve system stability, so keeping the car updated is key.

Minor Electrical Issues

As with many modern cars, the 1 Series features a large number of sensors and electronic systems, which can occasionally trigger false warnings—for example, parking sensors beeping unnecessarily, lane departure warnings activating on poorly marked roads, or tire pressure sensors misreading after seasonal changes. Regular calibration and ensuring sensors are clean usually resolve these problems.

Dual-Clutch Transmission Behavior (7DCT)

For models equipped with the 7-speed dual-clutch transmission, some drivers have experienced slight hesitation or jerkiness during low-speed maneuvers, such as in stop-and-go traffic or parking situations. This is characteristic of DCT systems and not usually a fault. However, delayed fluid changes or aggressive driving can worsen the effect over time. Adhering to scheduled transmission servicing prevents most issues.

Suspension and Interior Noises

A handful of owners have mentioned squeaks or rattles developing in the suspension or interior panels after extended use, particularly in colder climates. Common sources include door seals, dashboard trim, or rear suspension bushings. These are minor issues that can typically be resolved during regular servicing or through simple insulation adjustments.

Diesel Particulate Filter (DPF) Maintenance

For diesel models, particularly those frequently driven on short urban trips, DPF clogging can become an issue if the car doesn’t reach proper regeneration temperatures. Regular longer drives and proper maintenance routines usually prevent this problem.

Overall Reliability Outlook

In owner surveys and reliability studies, the 2021 BMW 1 Series performs above average for the premium compact segment. Its engines—both petrol and diesel—are well-proven, and the iDrive system, while occasionally glitchy, is generally stable after updates. Most issues are minor and manageable through regular servicing, software updates, and timely wear-component replacements, making the 1 Series a dependable daily driver with the refinement expected from BMW.

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Maintenance Schedule and Ownership Practicalities

Owning a 2021 BMW 1 Series involves adhering to a structured maintenance schedule that ensures long-term reliability, performance, and resale value. BMW has designed its servicing intervals to be predictable and supported by its Condition Based Servicing (CBS) system, which monitors wear and driving conditions to alert the driver when maintenance is due.

Standard Maintenance Intervals

For most petrol and diesel variants, BMW recommends servicing every 12 months or 15,000–20,000 km (9,300–12,500 miles), depending on driving style and environment. Typical maintenance tasks include:

• Engine oil and filter: replaced at every service interval
• Cabin air filter: every 20,000–25,000 km
• Air filter: every 30,000–40,000 km depending on driving conditions
• Brake fluid: every 2 years
• Spark plugs (petrol engines): around 60,000–80,000 km
• Fuel filter (diesel engines): typically every 60,000–90,000 km
• Transmission fluid: for automatic and dual-clutch transmissions, usually around 60,000–80,000 km

The Condition Based Servicing (CBS) system displayed on the iDrive screen provides reminders for specific tasks, making it easy to keep track without manually logging service intervals.

Ownership Costs and Service Packages

BMW offers optional service packages, allowing owners to prepay for maintenance over several years. These packages cover routine servicing using genuine BMW parts and are often more cost-effective than paying per visit. This also ensures that the vehicle retains a full BMW service history, which can significantly enhance resale value.

Additional cost-saving tips include:

• Regular oil changes even if CBS hasn’t yet requested one — particularly for turbocharged engines, as clean oil is crucial for turbo longevity.
• Prompt transmission servicing to prevent premature wear in dual-clutch and automatic gearboxes.
• Regular cleaning of sensors and cameras to avoid false alerts from driver-assistance systems.
• Using quality fuel and adhering to recommended tire pressures, which affects both efficiency and mechanical wear.

Practical Ownership Experience

The 2021 1 Series is designed with urban practicality in mind. Key features like easy-access service points, electronic service records, and remote diagnostic capabilities through BMW ConnectedDrive make ownership straightforward. The car’s compact dimensions and efficient engines keep day-to-day running costs reasonable for a premium vehicle, especially for diesel variants used on longer commutes.

Long-Term Benefits

Following the recommended maintenance schedule keeps the engine, transmission, and advanced electronic systems running smoothly. Proper care helps the 1 Series maintain its residual value, as buyers in the used market often prioritize models with complete service histories. Well-maintained examples regularly exceed 200,000 km (124,000 miles) with minimal major repairs, making the 1 Series a smart investment for those seeking both performance and long-term durability.

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Dimensions, Cargo Capacity, and Everyday Usability

The 2021 BMW 1 Series is designed to offer premium comfort and practicality within a compact footprint, making it equally at home in urban environments and on long-distance journeys. By switching to a front-wheel-drive platform, BMW has been able to maximize interior space, while retaining the car’s sporty proportions and confident stance.

Exterior and Interior Dimensions

The 2021 1 Series has grown slightly compared to its predecessor, improving passenger comfort and cargo flexibility:

• Length: 4,319 mm (170.0 in)
• Width: 1,799 mm (70.8 in)
• Height: 1,434 mm (56.5 in)
• Wheelbase: 2,670 mm (105.1 in)

Inside, the layout benefits from more efficient packaging:

• Front headroom: 1,020 mm (40.2 in)
• Front legroom: generous for tall drivers with excellent seat adjustability
• Rear headroom: 955 mm (37.6 in)
• Rear legroom: improved compared to previous generations, now competitive with rivals like the Audi A3 and Mercedes A-Class

Wide-opening doors and well-positioned seats make entry and exit easy for both front and rear passengers.

Cargo Capacity and Flexibility

The boot capacity of the 2021 BMW 1 Series is:

• 380 liters with the rear seats up
• 1,200 liters with the rear seatbacks folded down

The 40/20/40 split-folding rear seats come standard on most trims, allowing flexible combinations of passengers and cargo. The wide tailgate opening and low loading lip make it easy to load larger or heavier items, while additional underfloor storage compartments help organize smaller belongings securely.

Everyday Usability in Urban Environments

One of the 1 Series’ strongest advantages is its compact footprint combined with premium refinement.

• The tight turning circle and light steering make it easy to maneuver in narrow city streets or parking garages.
• Parking sensors and optional 360° cameras simplify parallel or tight-space parking.
• High-quality visibility through large side mirrors and an upright windshield enhances confidence in busy traffic.

These features make the 1 Series a practical daily companion despite its premium status.

Comfort and Versatility for Daily Life

Whether it’s a daily commute, weekend trips, or running errands, the 2021 BMW 1 Series balances agility with functionality. Its spacious cabin, versatile cargo area, and smart layout ensure that the car performs well in both urban and suburban settings, while still delivering the premium feel expected from BMW.

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Frequently Asked Questions About the 2021 BMW 1 Series

What engine options are available for the 2021 BMW 1 Series?

The 2021 BMW 1 Series offers a variety of turbocharged petrol and diesel engines, ranging from the efficient 118i 1.5-liter 3-cylinder to the high-performance M135i xDrive with a 2.0-liter 4-cylinder producing 306 PS. Diesel options include the 116d, 118d, and 120d, offering excellent torque and fuel economy, particularly on long trips. This diverse lineup allows buyers to choose between efficiency-focused daily drivers and sportier hot-hatch options depending on their needs.

Is the 2021 BMW 1 Series fuel-efficient?

Yes. The 1 Series achieves impressive fuel economy, especially with its smaller petrol and diesel engines. The 118i returns around 5.0–5.5 L/100 km (43–47 mpg US), while diesel variants like the 116d can reach 4.0–4.3 L/100 km (55–59 mpg US) in real-world driving. Even the sporty 128ti remains competitive at 6.5–7.0 L/100 km, offering strong performance without excessive fuel use.

How reliable is the 2021 BMW 1 Series?

Overall, the 2021 BMW 1 Series has solid reliability, supported by well-proven engines and modern electronics. Most reported issues are minor and involve infotainment software glitches, occasional sensor misreadings, or slight DCT transmission hesitation at low speeds. These are typically resolved with software updates or routine maintenance. With proper servicing, the 1 Series can deliver many years of trouble-free ownership, matching BMW’s premium reputation.

Does the 2021 BMW 1 Series have advanced safety features?

Yes. The 1 Series includes a comprehensive set of passive and active safety features. Standard equipment includes multiple airbags, ABS, stability control, and automatic emergency braking. Advanced driver-assistance options like Adaptive Cruise Control, Lane Keeping Assist, Blind Spot Monitoring, and Traffic Sign Recognition enhance safety on highways and in urban environments. It also earned five stars in Euro NCAP crash tests, confirming its high safety standards.

How practical is the 2021 BMW 1 Series for daily use?

Despite its premium positioning, the 1 Series is highly practical for daily driving. Its compact exterior makes it easy to maneuver in tight urban spaces, while the interior offers generous front space and improved rear legroom compared to previous generations. The boot provides 380 liters of storage, expandable to 1,200 liters, and features like split-folding seats and a low loading lip make carrying bulky items straightforward.

What are the recommended maintenance intervals for the 2021 BMW 1 Series?

BMW recommends servicing every 12 months or 15,000–20,000 km, depending on driving conditions. Regular oil changes, air filter replacements, brake fluid changes every 2 years, and scheduled transmission fluid servicing are key. The Condition Based Servicing (CBS) system alerts drivers when maintenance is due. Following these intervals ensures optimal performance, maintains efficiency, and helps preserve resale value.

Does the 2021 BMW 1 Series offer good infotainment and connectivity features?

Yes. The iDrive 7 system with a 10.25-inch touchscreen and rotary controller offers wireless Apple CarPlay, Android Auto, voice commands, and real-time navigation. Its combination of touchscreen, physical controls, and voice assistant makes it one of the most user-friendly infotainment systems in the segment. Additional features like wireless charging and BMW ConnectedDrive services further enhance everyday connectivity.