Technical Specifications
| Brand | Mini |
| Model | Convertible |
| Generation | Convertible (F57) |
| Type (Engine) | JCW 2.0 (231 Hp) Steptronic |
| Start of production | 2016 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 7.4 l/100 km (31.8 US mpg) |
| Fuel consumption (extra urban) | 5.1 l/100 km (46.1 US mpg) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg) |
| CO2 emissions | 138 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.4 kg/Hp |
| Weight-to-torque ratio | 3.9 kg/Nm |
| Power | 231 Hp @ 5200-6000 rpm |
| Torque | 320 Nm @ 1250-4800 rpm (236.02 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B48A20B |
| 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 | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Coolant capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Kerb Weight | 1245 kg (2744.76 lbs.) |
| Max. weight | 1785 kg (3935.25 lbs.) |
| Max load | 540 kg (1190.5 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 | 3874 mm (152.52 in.) |
| Width | 1727 mm (67.99 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2495 mm (98.23 in.) |
| Front track | 1485 mm (58.46 in.) |
| Rear track | 1485 mm (58.46 in.) |
| Ride height (ground clearance) | 115 mm (4.53 in.) |
| Drag coefficient (Cd) | 0.36 |
| Minimum turning circle | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission Steptronic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link suspension |
| 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 88Y XL |
| Wheel rims size | 7J x 17 |
The F57 Mini Convertible JCW 2.0 Steptronic represented the performance leader of the third-generation convertible range, produced between 2016 and 2018. Built on the UKL1 platform – a front-wheel-drive architecture shared with contemporary BMW models like the 2 Series Active Tourer – the JCW aimed to deliver a genuinely sporty open-top experience while maintaining the Mini’s iconic design and premium feel. It positioned itself above the Cooper and Cooper S models, offering a substantial increase in power and upgraded components for a more engaging drive.
Powertrain & Engine Architecture
The JCW Convertible is powered by the BMW B48A20B 2.0-liter turbocharged inline-four engine. This engine is part of BMW’s modular engine family, renowned for its efficiency and performance. The B48 features direct fuel injection, a twin-scroll turbocharger, and variable valve timing (VANOS) on both intake and exhaust camshafts. These technologies contribute to a broad torque curve and responsive power delivery. The engine generates 231 horsepower at 5200-6000 rpm and 236 lb-ft of torque between 1250-4800 rpm. The Steptronic transmission is a six-speed automatic gearbox with paddle shifters, providing smooth and relatively quick gear changes. While a six-speed manual transmission was available on other JCW models, the Steptronic was favored by those prioritizing convenience. The engine is mounted transversely at the front of the vehicle, a common configuration for front-wheel-drive cars.
Driving Characteristics
The JCW 2.0 Steptronic offers a noticeably more spirited driving experience compared to the standard Cooper or Cooper S Convertibles. Acceleration from 0-60 mph takes around 6.2 seconds, with a top speed of 149 mph. The Steptronic transmission, while not as directly engaging as a manual, provides smooth shifts and keeps the engine within its optimal power range. The gear ratios are balanced for both acceleration and fuel economy. Compared to the manual version, the Steptronic offers slightly less responsiveness, but compensates with ease of use in everyday driving. The JCW’s suspension is firmer than the standard Convertible, improving body control and reducing roll during cornering, though this does slightly compromise ride comfort.
Equipment & Trim Levels
The JCW Convertible came well-equipped as standard. Features included sport seats, a leather-wrapped steering wheel, automatic climate control, and a 6.5-inch infotainment system with Mini Connected services. Exterior styling included a unique front bumper with larger air intakes, side skirts, a rear diffuser, and a JCW-specific exhaust system. Optional extras included a larger 8.8-inch infotainment system with navigation, a Harman Kardon premium sound system, heated seats, and a range of exterior color and trim options. Interior upholstery choices included cloth/leather combinations and full leather. The JCW trim level was the highest available for the F57 Convertible, offering a more premium and sporty experience.
Chassis & Braking
The JCW Convertible features an independent suspension system on all four wheels. The front utilizes a McPherson strut setup with coil springs and an anti-roll bar, while the rear employs a multi-link suspension. This configuration balances handling and ride comfort. Brakes consist of ventilated discs at the front and solid discs at the rear, with ABS (Anti-lock Braking System) as standard. The JCW also benefits from a slightly stiffer chassis compared to the standard Convertible, enhancing body rigidity and handling precision. Electric power steering provides precise and responsive steering feel.
Market Reception & Comparison
The Mini Convertible JCW 2.0 Steptronic received generally positive reviews from automotive critics. Praised for its sporty handling, powerful engine, and distinctive styling, some reviewers noted the limited trunk space and firm ride. Compared to the Cooper S Automatic, the JCW offered a significant performance boost, but at a higher price. The JCW also delivered slightly lower fuel economy than the Cooper S due to its increased power. The B48 engine has proven generally reliable, though some owners have reported issues with the timing chain tensioner. Combined fuel economy averaged around 39.9 US mpg.
Legacy
The F57 Mini Convertible JCW 2.0 Steptronic remains a desirable used car for those seeking a fun and stylish open-top experience. The B48 engine has proven relatively reliable, and parts availability is good. The JCW’s unique styling and sporty driving dynamics continue to appeal to enthusiasts. While not the most practical convertible, the JCW offers a unique blend of performance, style, and character. The Steptronic transmission, while not preferred by all, provides a convenient and enjoyable driving experience for daily use. This model represents a high point in the F57 Convertible’s lifecycle, offering a compelling package for those who appreciate the Mini brand’s heritage and sporting spirit.
