From 2001 to 2006, the company assembled and installed the 1.4-liter gasoline engine Mini W10B14A in its most basic One configuration on the first generation of the Mini R50 hatchback. Only several European nations with tax breaks for small engines had the motor available.

engines from the Tritec series: W10B14A, W10B16A, and W11B16A.
Specifications
| Production years | 2001-2006 |
| Displacement, cc | 1397 |
| Fuel system | distributed injection |
| Power output, hp | 75 |
| Torque output, Nm | 122 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 77 |
| Piston stroke, mm | 75 |
| Compression ratio | 10.5 |
| Features | SOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.5 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Mini One 2003) — city — highway — combined |
8.8 5.0 6.5 |
| Engine lifespan, km | ~280 000 |
The engine was installed on:
- Mini Hatch R50 in 2001 – 2006.
Disadvantages of the Mini W10B14A engine
Early on in their manufacturing history, engines frequently had subpar construction;
Additionally, rocker roller destruction and cylinder head cracks are frequently observed here;
Many of this motor’s issues are related to the electronic throttle assembly’s whims;
The timing chain typically lasts between 150 and 200 thousand kilometers, but replacement is reasonably priced;
The fuel pump, expansion tank, and hydraulic booster are the engine’s weak points.
