The Mini Hatch (F55) 5-door Cooper 1.5, produced from 2018 onwards, represents a significant iteration of the iconic British small car, now under BMW ownership. This particular variant, equipped with the 1.5-liter three-cylinder engine producing 136 horsepower, occupied a key position in the F55 lineup, bridging the gap between the entry-level One models and the more performance-oriented Cooper S. The facelifted 2018 model brought subtle styling revisions and refinements to the already popular F55 platform, solidifying its appeal in the premium subcompact segment. This five-door configuration offered increased practicality compared to the traditional three-door, broadening the Mini’s customer base.
Technical Specifications
| Brand | Mini |
| Model | Hatch |
| Generation | Hatch (F55, facelift 2018) 5-door |
| Type (Engine) | Cooper 1.5 (136 Hp) |
| Start of production | 2018 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| Fuel consumption (extra urban) | 4.0-4.1 l/100 km (58.8 – 57.4 US mpg, 70.6 – 68.9 UK mpg, 25 – 24.4 km/l) |
| Fuel consumption (combined) | 4.7-4.8 l/100 km (50 – 49 US mpg, 60.1 – 58.9 UK mpg, 21.3 – 20.8 km/l) |
| CO2 emissions | 109-111 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.2 sec |
| Acceleration 0 – 62 mph | 8.2 sec |
| Acceleration 0 – 60 mph | 7.8 sec |
| Maximum speed | 207 km/h (128.62 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.4 kg/Hp, 118.8 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 200.9 Nm/tonne |
| Power | 136 Hp @ 4400-6000 rpm |
| Power per litre | 90.7 Hp/l |
| Torque | 230 Nm @ 1250-4300 rpm (169.64 lb.-ft. @ 1250-4300 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B38A15A |
| Engine displacement | 1499 cm3 (91.47 cu. in.) |
| Number of cylinders | 3 |
| 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 |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Kerb Weight | 1145 kg (2524.29 lbs.) |
| Max. weight | 1670 kg (3681.72 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space – minimum | 278 l (9.82 cu. ft.) |
| Trunk (boot) space – maximum | 941 l (33.23 cu. ft.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 3982 mm (156.77 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) | 0.30 |
| Minimum turning circle (turning diameter) | 11.0 m (36.09 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 | 6 gears, manual transmission |
| 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 | 175/65 R15 84H |
| Wheel rims size | 5.5J x 15 |
INTRODUCTION
The F55 Mini Hatch, launched in 2014 and facelifted in 2018, represented a significant step forward for the brand, blending its iconic design with modern technology and engineering. The 5-door variant, introduced shortly after the initial launch, addressed a key criticism of the previous generation – limited rear passenger space and practicality. The Cooper 1.5, with its 136 horsepower output, was positioned as a sweet spot in the range, offering a balance of performance, fuel efficiency, and affordability. It catered to buyers who desired the Mini experience without the higher price tag of the Cooper S or the more basic nature of the One models. The 2018 facelift brought subtle but noticeable improvements to the exterior styling, interior materials, and infotainment system.
Powertrain & Engine Architecture
At the heart of the Cooper 1.5 lies the BMW B38A15A engine, a 1.5-liter turbocharged three-cylinder petrol engine. This engine is a key component of BMW’s modular engine family and features direct fuel injection, a single twin-scroll turbocharger, and variable valve timing (VANOS) on both the intake and exhaust sides. The B38 engine is known for its responsiveness and surprisingly refined character for a three-cylinder unit. The engine’s output of 136 hp at 4400-6000 rpm and 230 Nm (169.64 lb-ft) of torque between 1250-4300 rpm provides ample power for everyday driving. The engine is paired with a 6-speed manual transmission in this configuration, offering precise shifts and a direct connection to the drivetrain. The manual transmission was a popular choice for drivers who enjoyed a more engaging driving experience.
Driving Characteristics
The 1.5-liter Cooper offers a surprisingly lively driving experience. While not as outright quick as the Cooper S, the 136 hp engine provides sufficient power for confident overtaking and enjoyable acceleration. The turbocharger provides a noticeable boost in power from around 1500 rpm, delivering a broad torque curve that makes the car feel responsive in most situations. The 6-speed manual transmission is well-matched to the engine, allowing drivers to keep the engine in its sweet spot. Compared to the higher-output Cooper S, the 1.5 feels less urgent but more accessible and forgiving. The manual transmission also provides better fuel economy than the optional automatic.
Equipment & Trim Levels
The 2018 Mini Hatch 5-door Cooper 1.5 came standard with a respectable level of equipment, including air conditioning, power windows, a multi-function steering wheel, and a basic infotainment system with Bluetooth connectivity. Higher trim levels offered options such as a larger touchscreen display, navigation, Apple CarPlay, and a premium sound system. Interior upholstery typically consisted of cloth seats, with leather options available as an upgrade. Exterior options included various wheel designs, body colors, and chrome accents. The 5-door model also benefited from a more spacious rear seat and a larger cargo area compared to the three-door version.
Chassis & Braking
The F55 Mini Hatch utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a comfortable yet sporty ride. The suspension is tuned to offer a good balance between handling and ride quality. The steering is precise and well-weighted, providing good feedback to the driver. Braking duties are handled by ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) is standard, providing enhanced safety in emergency braking situations. The chassis is relatively lightweight, contributing to the car’s agile handling characteristics.
Market Reception & Comparison
The Mini Hatch 5-door Cooper 1.5 was generally well-received by automotive critics. It was praised for its stylish design, engaging driving dynamics, and improved practicality compared to the three-door model. Fuel economy was also a strong point, with combined figures ranging from 4.7 to 4.8 l/100 km (50-49 US mpg). Compared to the Cooper S, the 1.5 offered a more affordable entry point into the Mini range, while still providing a fun and rewarding driving experience. The 1.5 also offered better fuel economy than the Cooper S. However, some critics noted that the rear seat space, while improved, was still somewhat limited for taller passengers.
Legacy
The B38 engine has proven to be a reliable and durable unit, with relatively few reported issues. The F55 Mini Hatch, in general, has also demonstrated good long-term reliability. On the used car market, the 2018 5-door Cooper 1.5 remains a popular choice, offering a blend of style, practicality, and affordability. Its compact size, fuel efficiency, and engaging driving dynamics make it a compelling option for urban commuters and those seeking a premium small car experience. Regular maintenance, including oil changes and timely servicing, is crucial to ensure the continued reliability of this powertrain.
