The Mini Hatch (F55) facelift, specifically the 5-door Cooper SD 2.0 with the Steptronic automatic transmission, represents a refinement of the third-generation Mini Hatch introduced in 2014. Production of this variant ran during the 2018 model year, forming part of the mid-cycle refresh for the F55 chassis. This model aimed to blend the iconic Mini design with modern diesel efficiency and practicality, offering a more spacious and versatile option compared to the standard 3-door Hatch. It occupied a mid-range position within the F55 lineup, positioned above the Cooper and Cooper D models, but below the more performance-oriented John Cooper Works variants.
Technical Specifications
| Brand | Mini |
| Model | Hatch |
| Generation | Hatch (F55, facelift 2018) 5-door |
| Type (Engine) | Cooper SD 2.0 (170 Hp) Steptronic |
| Start of production | 2018 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 4.6-4.7 l/100 km (51.1 – 50 US mpg, 61.4 – 60.1 UK mpg, 21.7 – 21.3 km/l) |
| Fuel consumption (extra urban) | 3.9 l/100 km (60.3 US mpg, 72.4 UK mpg, 25.6 km/l) |
| Fuel consumption (combined) | 4.1-4.2 l/100 km (57.4 – 56 US mpg, 68.9 – 67.3 UK mpg, 24.4 – 23.8 km/l) |
| CO2 emissions | 107-109 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.3 sec |
| Acceleration 0 – 62 mph | 7.3 sec |
| Acceleration 0 – 60 mph | 6.9 sec |
| Maximum speed | 223 km/h (138.57 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.6 kg/Hp, 131.3 Hp/tonne |
| Weight-to-torque ratio | 3.6 kg/Nm, 278 Nm/tonne |
| Power | 170 Hp @ 4000 rpm |
| Power per litre | 85.2 Hp/l |
| Torque | 360 Nm @ 1500-2500 rpm (265.52 lb.-ft. @ 1500-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B47C20A |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 3.3 l (3.49 US qt | 2.9 UK qt) |
| Kerb Weight | 1295 kg (2854.99 lbs.) |
| Max. weight | 1770 kg (3902.18 lbs.) |
| Max load | 475 kg (1047.2 lbs.) |
| Trunk (boot) space – minimum | 278 l (9.82 cu. ft.) |
| Trunk (boot) space – maximum | 941 l (33.23 cu. ft.) |
| Fuel tank capacity | 44 l (11.62 US gal | 9.68 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 4005 mm (157.68 in.) |
| Width | 1727 mm (67.99 in.) |
| Height | 1425 mm (56.1 in.) |
| Wheelbase | 2567 mm (101.06 in.) |
| Front track | 1501 mm (59.09 in.) |
| Rear (Back) track | 1501 mm (59.09 in.) |
| Ride height (ground clearance) | 146 mm (5.75 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle | 11.0 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears | 8 |
| 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 |
Powertrain & Engine Architecture
The heart of the Cooper SD 2.0 is the BMW Group’s B47C20A 2.0-liter inline-four diesel engine. This engine is a member of the modular B-series engine family, known for its efficiency and refinement. It utilizes a common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The B47 features a single turbocharger with variable geometry turbine (VGT) technology and an intercooler, boosting power and torque while minimizing turbo lag. The engine produces 170 horsepower at 4,000 rpm and a substantial 360 Nm (265 lb-ft) of torque between 1,500 and 2,500 rpm. This broad torque curve is a hallmark of diesel engines, providing strong pulling power from low engine speeds. The Steptronic 8-speed automatic transmission is a torque-converter type, offering smooth and quick shifts. It’s programmed for efficiency and comfort, with the ability for the driver to select Sport mode for more aggressive shifting.
Driving Characteristics
The 170 hp/360 Nm output, coupled with the 8-speed automatic, delivers a respectable, if not exhilarating, driving experience. Acceleration from 0 to 60 mph takes around 6.9 seconds. The automatic transmission is well-matched to the engine’s torque characteristics, providing seamless gear changes and keeping the engine within its optimal power band. Compared to the manual transmission versions, the Steptronic offers greater convenience, particularly in urban driving. However, it does slightly diminish the sense of driver engagement. Against the more powerful Cooper S models, the SD lacks the outright pace, but it compensates with superior fuel economy and a more relaxed driving style. The 5-door configuration adds practicality without significantly compromising the Mini’s characteristic go-kart handling.
Equipment & Trim Levels
The Cooper SD 2.0 Automatic typically came well-equipped as standard. Features included air conditioning, a 6.5-inch infotainment system with Mini Connected services, Bluetooth connectivity, and a leather-wrapped steering wheel. Common optional extras included a larger touchscreen display, navigation system, panoramic sunroof, heated seats, and parking sensors. Interior upholstery was typically a combination of cloth and leatherette, with various color options available. Trim levels could vary slightly depending on the market, but generally, the Cooper SD sat in a mid-range position, offering a good balance of features and price.
Chassis & Braking
The F55 chassis utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a comfortable yet sporty ride. The suspension is tuned to balance handling agility with everyday comfort. The Cooper SD 2.0 featured ventilated front disc brakes and solid rear discs. Anti-lock Braking System (ABS) and Electronic Stability Control (ESC) were standard safety features. The steering is electric power-assisted, offering precise and responsive control. The weight distribution is relatively balanced, contributing to the Mini’s nimble handling characteristics.
Market Reception & Comparison
The Cooper SD 2.0 Automatic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined engine. However, some reviewers noted that the diesel engine lacked the character of the petrol engines and that the automatic transmission could occasionally feel hesitant. Compared to the Cooper D, the SD offered a significant power upgrade, while maintaining excellent fuel economy. Against the Cooper S, it provided a more economical alternative, albeit with less performance. Fuel economy figures of around 56-57 mpg (US) were consistently reported, making it an attractive option for drivers prioritizing efficiency.
Legacy
The B47 engine, while generally reliable, has been known to exhibit some issues with timing chain wear and EGR cooler failures in higher mileage examples. Regular maintenance, including oil changes and coolant flushes, is crucial for long-term reliability. The Steptronic transmission is generally robust, but proper servicing is also essential. Today, the F55 Cooper SD 2.0 Automatic represents a practical and efficient used car option. Its combination of fuel economy, space, and the iconic Mini brand appeal make it a popular choice for urban commuters and small families. Values tend to be reasonable, reflecting its age and mileage, but well-maintained examples with low mileage can command a premium.
