The 1.2-liter Mini One B38A12A turbo engine was produced by the company from 2014 to 2017 and was installed on the base versions of the third generation Mini models in the back of the F55, F56 and F57. This is the only power unit from the B38 family that was not installed on BMW cars.
B38/B48-series engines: B38A12A, B38A15A, B48A20A, B48A20B.
Specifications
| Production years | 2014-2017 |
| Displacement, cc | 1198 |
| Fuel system | direct injection |
| Power output, hp | 75 (One First) 102 (One) |
| Torque output, Nm | 150 (One First) 180 (One) |
| Cylinder block | aluminum R3 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 78 |
| Piston stroke, mm | 83.6 |
| Compression ratio | 11.0 |
| Features | Valvetronic |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on both shafts |
| Turbocharging | Continental 7633795 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.25 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Mini One First 2015) — city — highway — combined |
6.4 4.2 5.0 |
| Engine lifespan, km | ~250 000 |
The engine was installed on:
- Mini Cabrio 3 (F57) in 2016 – 2017;
- Mini Hatch F55 in 2014 – 2017;
- Mini Hatch 3 (F56) in 2014 – 2017.
Disadvantages of the Mini B38A12A engine
- So far, the main complaints are related to the vagaries of direct injection and soot on the valves;
- The weak point of the engine is the thermal module, which here replaces the thermostat;
- Periodically, problems are thrown up by Vanos phase regulators or the Valvetronic system;
- Sometimes the thrust bearing is destroyed due to the large axial clearance on the crankshaft.
