One problem related to power train has been reported for the 2004 Mini Cooper S. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mini Cooper S based on all problems reported for the 2004 Cooper S.
Supercharger failed at 60,950 miles, resulting in complete rebuild of unit. Faulty gear and lubrication design.
| Transmission Fluid Leaking problems | |
| Power Train problems | |
| Transmission Not Go Into Gear problems |