The Mini Hatch (F55) 5-door One 1.5, produced from 2018 onwards, represents an entry point into the third generation of the iconic British hatchback. This variant, powered by a 1.5-liter three-cylinder engine producing 102 horsepower, was positioned as the most fuel-efficient and accessible model in the F55 lineup. Introduced with the facelift in 2018, it aimed to broaden the Mini’s appeal by offering a more economical option without sacrificing the brand’s signature driving dynamics and styling. The F55 generation, built on the UKL1 platform shared with BMW models, marked a significant departure from previous Minis in terms of size and technology.
Technical Specifications
| Brand | Mini |
| Model | Hatch |
| Generation | Hatch (F55, facelift 2018) 5-door |
| Type (Engine) | One 1.5 (102 Hp) |
| Start of production | 2018 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.0-6.1 l/100 km (39.2 – 38.6 US mpg) |
| Fuel consumption (extra urban) | 4.3-4.5 l/100 km (54.7 – 52.3 US mpg) |
| Fuel consumption (combined) | 4.9-5.1 l/100 km (48 – 46.1 US mpg) |
| CO2 emissions | 112-116 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.3 sec |
| Acceleration 0 – 62 mph | 10.3 sec |
| Acceleration 0 – 60 mph | 9.8 sec |
| Maximum speed | 192 km/h (119.3 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 11.4 kg/Hp |
| Weight-to-torque ratio | 6.1 kg/Nm |
| Power | 102 Hp @ 3900-6500 rpm |
| Torque | 190 Nm @ 1350-3600 rpm (140.14 lb.-ft.) |
| 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 | 1165 kg (2568.39 lbs.) |
| Max. weight | 1680 kg (3703.77 lbs.) |
| Max load | 515 kg (1135.38 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) | 0.29 |
| Minimum turning circle | 11.0 m (36.09 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | 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 |
Powertrain & Engine Architecture
The heart of the F55 One 1.5 is the BMW B38A15A engine, a 1.5-liter inline three-cylinder gasoline engine. This engine is part 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 turbocharger is crucial for boosting power output from a relatively small displacement engine. The engine’s architecture prioritizes efficiency and responsiveness, with the turbo designed to minimize lag. The engine produces 190 Nm (140 lb-ft) of torque between 1350 and 3600 rpm, providing usable power across a broad rev range. The engine is paired with a 6-speed manual transmission, delivering power to the front wheels. This transmission was chosen to enhance the driving experience and provide better fuel economy compared to an automatic option.
Driving Characteristics
The 102 hp output and manual transmission combination in the F55 One 1.5 delivers a surprisingly engaging driving experience. While not particularly quick – 0-60 mph takes around 9.8 seconds – the engine is eager to rev and provides sufficient power for everyday driving. The gear ratios are well-matched, allowing for smooth acceleration and comfortable cruising. Compared to higher-output Mini variants like the Cooper or Cooper S, the One 1.5 feels less urgent, but it offers a more relaxed and economical driving style. The lighter engine weight contributes to nimble handling, a hallmark of the Mini brand. The manual transmission encourages driver involvement and provides precise gear changes.
Equipment & Trim Levels
The F55 One 1.5 typically came equipped with a respectable level of standard features. These included air conditioning, power windows, power mirrors, a basic infotainment system with Bluetooth connectivity, and a leather-wrapped steering wheel. Safety features such as ABS, stability control, and multiple airbags were also standard. Optional extras included a larger touchscreen infotainment system with navigation, a panoramic sunroof, heated seats, and various styling packages. Interior upholstery was typically cloth, with options for partial leather trim. The trim level was generally considered the entry-level offering, focusing on affordability and practicality.
Chassis & Braking
The F55 One 1.5 utilizes a McPherson strut front suspension and a multi-link rear suspension, providing a good balance of ride comfort and handling precision. The suspension setup is tuned to be slightly softer than that of the more powerful Mini variants, prioritizing comfort over outright sportiness. The braking system consists of ventilated discs at the front and solid discs at the rear. ABS (Anti-lock Braking System) is standard, providing enhanced braking performance in emergency situations. The steering is electric power-assisted, offering precise and responsive control.
Market Reception & Comparison
The Mini Hatch (F55) 5-door One 1.5 was generally well-received by critics as an affordable and efficient entry point into the Mini range. It was praised for its fuel economy, nimble handling, and stylish design. However, some reviewers noted that the 102 hp engine could feel underpowered, especially when fully loaded or driving uphill. Compared to the Cooper variant, which offered a more powerful engine, the One 1.5 was seen as a more sensible choice for drivers prioritizing fuel efficiency and affordability. Its fuel economy figures of around 48-46.1 US mpg combined were a significant selling point.
Legacy
The B38A15A engine, while not without its quirks, has proven to be a relatively reliable powertrain. Common issues include occasional oil leaks and potential problems with the turbocharger, but these are not widespread. The F55 One 1.5 remains a popular choice in the used car market, particularly for first-time buyers and those seeking a stylish and economical hatchback. Its compact size, nimble handling, and relatively low running costs make it a practical and enjoyable car to own. The continued demand for these models suggests a lasting appeal and a solid reputation for reliability.
