The 1.4-liter Mini One N12B14A engine was produced at a factory in England from 2007 to 2010 and installed on the simplest versions of the Mini in the back of the R56 and the Clubman station wagon in the back of the R55. A similar power unit was installed on some Peugeot-Citroen models under the EP3 index.
Prince-series family: N12B14A, N12B16A, N16B16A, N14B16A, N14B16C, N18B16A, N18B16C.
Specifications
| Production years | 2007-2010 |
| Displacement, cc | 1397 |
| Fuel system | distributed injection |
| Power output, hp | 75 (One 75) 95 (One 95) |
| Torque output, Nm | 120 (One 75) 140 (One 95) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 77 |
| Piston stroke, mm | 75 |
| 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 One 2009) — city — highway — combined |
7.2 4.4 5.4 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 115 |
The engine was installed on:
- Mini Clubman R55 in 2009 – 2010;
- Mini Hatch R56 in 2007 – 2010.
Disadvantages of the Mini N12B14A engine
- The most famous problem with these engines is oil burn and intake coking;
- The components of the timing chain and especially the tensioner are distinguished by a low resource;
- Vanos-type phase regulators and the Valvetronic system also serve relatively little;
- The engines of this family are also famous for regular leaks of lubricant and antifreeze;
- The weak points of the unit include a water pump, a thermostat and a second lambda probe.
Frequently asked questions about the Mini N12B14A
How much power does the Mini N12B14A make?
Power output of the Mini N12B14A, hp: 75 (One 75); 95 (One 95). Torque, Nm: 120 (One 75); 140 (One 95).
How much oil does the Mini N12B14A take and which one?
Engine oil capacity: 4.2 liters. Recommended oil: 5W-30.
Does the Mini N12B14A have a timing belt or chain?
The Mini N12B14A uses a timing chain.
Is the Mini N12B14A turbocharged?
No, the Mini N12B14A is naturally aspirated.
Does the Mini N12B14A need valve clearance adjustment?
No, the Mini N12B14A has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Mini N12B14A last?
The typical lifespan of the Mini N12B14A is ~250 000 km with proper maintenance.
What is the fuel consumption of the Mini N12B14A?
Mini One 2009: city 7.2, highway 4.4, combined 5.4 L/100 km.
What cars was the Mini N12B14A installed on?
Mini Clubman R55 in 2009 - 2010; Mini Hatch R56 in 2007 - 2010.
What are the common problems of the Mini N12B14A?
The most famous problem with these engines is oil burn and intake coking. The components of the timing chain and especially the tensioner are distinguished by a low resource. All known problems.
