The Mini Convertible Cooper S 2.0 (178 Hp) Steptronic, produced from March 2021 to February 2024, represents a mid-range offering within the F57 facelift generation of the Mini Convertible. Positioned above the base Cooper models and below the more performance-focused John Cooper Works (JCW) variant, this trim aimed to balance spirited driving with everyday usability and comfort. It builds upon the foundation of the F57 platform, shared with other Mini models and BMW front-wheel-drive vehicles, offering an open-top experience with a turbocharged engine and a convenient automatic transmission. This iteration of the Convertible saw updates to styling, technology, and emissions compliance compared to pre-facelift models.
Technical Specifications
| Brand | Mini |
| Model | Convertible |
| Generation | Convertible (F57, facelift 2021) |
| Type (Engine) | Cooper S 2.0 (178 Hp) Steptronic |
| Start of production | March, 2021 |
| End of production | February, 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 6.2-6.6 l/100 km (37.9 – 35.6 US mpg, 45.6 – 42.8 UK mpg, 16.1 – 15.2 km/l) |
| CO2 emissions (WLTP) | 141-151 g/km |
| Fuel consumption (economy) – urban (NEDC, WLTP equivalent) | 6.8-6.9 l/100 km (34.6 – 34.1 US mpg, 41.5 – 40.9 UK mpg, 14.7 – 14.5 km/l) |
| Fuel consumption (economy) – extra urban (NEDC, WLTP equivalent) | 4.9-5.1 l/100 km (48 – 46.1 US mpg, 57.6 – 55.4 UK mpg, 20.4 – 19.6 km/l) |
| Fuel consumption (economy) – combined (NEDC, WLTP equivalent) | 5.6-5.8 l/100 km (42 – 40.6 US mpg, 50.4 – 48.7 UK mpg, 17.9 – 17.2 km/l) |
| CO2 emissions (NEDC, WLTP equivalent) | 128-132 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 sec |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 7.4 kg/Hp, 134.3 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 211.3 Nm/tonne |
| Power | 178 Hp @ 5000-5500 rpm |
| Power per litre | 89.1 Hp/l |
| Torque | 280 Nm @ 1350-4200 rpm (206.52 lb.-ft. @ 1350-4200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B48A20F |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Coolant | 7.1 l (7.5 US qt | 6.25 UK qt) |
| Kerb Weight | 1325 kg (2921.12 lbs.) |
| Max. weight | 1745 kg (3847.07 lbs.) |
| Max load | 420 kg (925.94 lbs.) |
| Trunk (boot) space – minimum | 160 l (5.65 cu. ft.) |
| Trunk (boot) space – maximum | 215 l (7.59 cu. ft.) |
| Fuel tank capacity | 44 l (11.62 US gal | 9.68 UK gal) |
| Length | 3876 mm (152.6 in.) |
| Width | 1727 mm (67.99 in.) |
| Width including mirrors | 1932 mm (76.06 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2495 mm (98.23 in.) |
| Front track | 1485 mm (58.46 in.) |
| Rear (Back) track | 1485 mm (58.46 in.) |
| Front overhang | 771 mm (30.35 in.) |
| Rear overhang | 610 mm (24.02 in.) |
| Ride height (ground clearance) | 115 mm (4.53 in.) |
| Drag coefficient (Cd) | 0.36 |
| Minimum turning circle (turning diameter) | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission Steptronic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 205/45 R17 |
| Wheel rims size | 7J x 17 |
Powertrain & Engine Architecture
At the heart of the Cooper S 2.0 Steptronic lies the BMW Group’s B48A20F 2.0-liter inline-four cylinder engine. This engine is a member of the modular B-series family, known for its efficiency and performance. It utilizes direct fuel injection, operating at a compression ratio of 11:1, and is equipped with a twin-scroll turbocharger and intercooler to maximize power output and minimize turbo lag. The engine produces 178 horsepower at 5000-5500 rpm and 280 Nm (206.52 lb-ft) of torque between 1350 and 4200 rpm. The Steptronic transmission is a 7-speed dual-clutch automatic, offering quick and smooth gear changes. This transmission allows for both fully automatic operation and manual gear selection via steering wheel-mounted paddles or the gear selector.
Driving Characteristics
The 178 hp output, coupled with the 7-speed Steptronic transmission, provides a respectable level of performance. Acceleration from 0 to 60 mph takes approximately 6.6 seconds, and the car reaches a top speed of 230 km/h (142.92 mph). Compared to the more powerful JCW variant, the Cooper S 2.0 feels less aggressively tuned, prioritizing a more comfortable and refined driving experience. The automatic transmission is well-programmed, offering responsive shifts in both automatic and manual modes. While not as engaging as a manual transmission, the Steptronic unit provides convenience and ease of use, particularly in urban driving conditions. The gear ratios are optimized for a balance of acceleration and fuel efficiency.
Equipment & Trim Levels
The Cooper S 2.0 Steptronic typically came equipped with a generous array of standard features. These included automatic climate control, a 6.5-inch infotainment system with Bluetooth connectivity, and a leather-wrapped steering wheel. Exterior features included alloy wheels, LED headlights, and chrome accents. Optional extras were plentiful, allowing buyers to personalize their vehicles with features such as a larger touchscreen display, navigation system, premium sound system, heated seats, and a variety of exterior styling packages. Interior upholstery options included cloth and leather combinations, with a range of color choices available.
Chassis & Braking
The F57 Convertible utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a good balance of ride comfort and handling. The suspension is tuned to be slightly softer than the JCW model, prioritizing comfort over outright sportiness. Brakes consist of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) is standard. The steering is electrically assisted, providing a light and precise feel. The car’s relatively low weight (1325 kg / 2921.12 lbs) contributes to its agile handling characteristics.
Market Reception & Comparison
The Mini Convertible Cooper S 2.0 Steptronic was generally well-received by automotive critics. It was praised for its stylish design, fun-to-drive character, and comfortable interior. The automatic transmission was considered a good match for the engine, providing smooth and convenient operation. Compared to the base Cooper models, the Cooper S offered a significant performance upgrade. However, it was often noted that the JCW variant provided a more thrilling driving experience. Fuel economy was respectable, with combined figures ranging from 6.2 to 6.6 l/100 km (37.9 – 35.6 US mpg). Reliability was generally good, although some owners reported minor issues with the infotainment system.
Legacy
The B48 engine family has proven to be relatively reliable, and the 7-speed Steptronic transmission is also known for its durability. On the used car market, the Cooper S 2.0 Steptronic represents a good value proposition, offering a stylish and enjoyable driving experience at a reasonable price. Regular maintenance, including oil changes and fluid checks, is crucial to ensure the long-term reliability of this powertrain. The F57 facelift Convertible remains a popular choice for buyers seeking a compact, open-top car with a premium feel.
