The R56 Hatch, R57 Cabrio, and R55 Clubman station wagons were equipped with the 1.6-liter turbocharged Mini Cooper S N14B16A engine, which was manufactured in England between 2006 and 2010. Under its EP6DTS index, Peugeot and Citroen vehicles had the same power unit installed.
N12B14A, N12B16A, N16B16A, N14B16A, N14B16C, N18B16A, and N18B16C are Prince-series engines.
Specifications
| Production years | 2006-2010 |
| Displacement, cc | 1598 |
| Fuel system | direct injection |
| Power output, hp | 174 |
| Torque output, Nm | 240 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 77 |
| Piston stroke, mm | 85.8 |
| Compression ratio | 10.5 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | at the exhaust |
| Turbocharging | BorgWarner K03 |
| 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 S 2008) — city — highway — combined |
8.9 5.7 6.9 |
| Engine lifespan, km | ~200 000 |
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 N14B16A engine
The erratic direct fuel injection system is the most troublesome of these;
Large lubrication consumption and increased coking in the intake rank second;
Here, the timing chain has a limited resource; it frequently travels less than 50,000 kilometers;
Both the Vanos phase regulator and the vacuum pump are unreliable;
The thermostat, water pump, and lambda probes are additional engine weak points.