Engine Mini B38A12A

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.


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
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.

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