Engine Mini N12B16A

The 1.6-liter Mini Cooper N12B16A engine was assembled at a factory in England from 2006 to 2010 and installed on the mass versions of the Mini in the back of the R56, as well as the Clubman station wagon in the back of the R55. A similar power unit was installed on Peugeot-Citroen cars under its EP6 index.

Prince-series engines: N12B14A, N12B16A, N16B16A, N14B16A, N14B16C, N18B16A, N18B16C.


Production years 2006-2010
Displacement, cc 1598
Fuel system distributed injection
Power output, hp 90 (One)
120 (Cooper)
Torque output, Nm 150 (One)
160 (Cooper)
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 77
Piston stroke, mm 85.8
Compression ratio 11.0
Features DOHC, Valvetronic
Hydraulic lifters yes
Timing drive chain
Phase regulator on both shafts
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.2
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Mini Cooper 2009)
— city
— highway
— combined
Engine lifespan, km ~230 000

The engine was installed on:

  • Mini Cabrio R57 in 2009 – 2010;
  • Mini Clubman R55 in 2007 – 2010;
  • Mini Hatch R56 in 2006 – 2010.

Disadvantages of the Mini N12B16A engine

  • The main problem of these power units is oil burn and intake coking.
  • A rather modest resource here is the timing chain and especially its tensioner.
  • Also, the Valvetronic system and Vanos-type phase regulators serve relatively little.
  • All engines of this family are famous for regular oil and antifreeze leaks.
  • The weak points of such motors include a thermostat, a water pump and lambda probes.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top