The N14B16A engine is a 1.6-liter turbocharged engine developed as part of a collaboration between BMW and PSA Peugeot Citroën. It was produced in England from 2006 to 2010 and was installed in the second-generation Mini Cooper S models: Hatch R56, Cabrio R57, and Clubman R55. The same engine was used in Peugeot and Citroën models under the EP6DTS index. The main feature of the N14B16A is the presence of BorgWarner K03 turbocharger, which significantly increased power and torque compared to the atmospheric versions.
N14B16A engine specifications
| Parameter | Modification Cooper S |
|---|---|
| Determined displacement | 1598 cm³ |
| Power system | Direct injection |
| Power | 174 hp |
| Torque | 240 Nm |
| Cylinder block | Aluminum R4 |
| Cylinder head | Aluminum 16v |
| Cylinder diameter | 77 mm |
| Piston stroke | 85.8 mm |
| Compression ratio | 10.5 |
| Engine Features | DOHC |
| Hydrocompensators | Yes |
| Transmission timing | Chain |
| Fasoregulator | Outlet |
| Turbocharger | BorgWarner K03 |
| Oil | 4.2 liters 5W-30 |
| Environmental class | Euro 4 |
| Example service life | 200,000 km |
Engine application
- Mini Clubman R55 (2007-2010)
- Mini Hatch R56 (2006-2010)
- Mini Cabrio R57 (2009-2010)
Disadvantages and typical problems of the N14B16A engine
The N14B16A engine is known for its high level of power, however, it also has a number of typical problems:
- Direct Injection System: One of the most problematic components, prone to breakdowns and in need of careful maintenance.
- Oil consumption and intake coking: The engine is prone to high oil consumption (0.5-1 liter per 1000 km) and accumulation of carbon deposits on the intake valves.
- Timing chain: Modest chain life – often no more than 50,000 km. Problems with the chain tensioner can cause serious engine damage.
- Vacuum pump and phasoregulator Vanos: Not very reliable and often require replacement.
- Thermostat, water pump and lambda probes: Elements that tend to break down frequently, especially at high mileage.
Main causes of breakdowns and how to avoid them
- Timing chain and tensioner: The main problem with this motor is the low life of the chain tensioner, which can lead to pistons hitting valves and engine failure. Regular inspection and replacement of the chain before 80,000 km can prevent serious problems.
- Oil consumption: High oil consumption requires constant monitoring of lubrication levels. It is recommended to change the oil every 5,000 to 7,000 kilometers to avoid accumulation of deposits and increased engine wear.
- Engine overheating: Problems with the thermostat and water pump can cause the engine to overheat, increasing the risk of component damage. Monitoring engine temperatures and replacing these components in a timely manner can help extend engine life.
- Inlet fouling: The direct injection system tends to accumulate fouling on the intake valves, impairing performance. Regular cleaning of the intake valves will help avoid this problem.
- Oil leaks: Problems with seals and oil connections can lead to oil leaks, requiring constant visual inspection of the engine.
N14B16A reliability
The N14B16A engine is a powerful and technologically advanced powertrain, but it requires careful and regular maintenance. It is important to keep an eye on the oil level, the condition of the timing chain, and the engine temperature.
Engine Rating 3+