BMW Mini Gearbox Problems
The earlier BMW Mini (mk1) is notorious for it’s long list of common problems and includes the common failing 5-Speed manual gearbox. The BMW Mini Mk1 is fitted with a Midland box across all models including the Mini ONE and Cooper.
The most common problem with these gearboxes is bearing failure and more often it’s either the pinion bearing or front bearing on the lay gear – you may notice a distinctive noise as they progress to wear out. If you do notice the problem in it’s early stages, the cost of repair is much cheaper than if you wait for the bearings to completely collapse.
Once the bearings collapse, it could as much as double the repair bill depending on the extent of damage it causes. We’ve seen gear-sets get chewed to bits and gearbox casings cracked – this type of damage is irreparable and new casings and gearsets can be very expensive.
Common BMW Mini Gearbox Faults
- Noisy Gearbox (Crunching / Whining / Grinding Noise)
- Not Going Into Gear (especially 2nd + 5th)
- Stuck In Gear (commonly 2nd + 5th)
- Loss of Power / Clutch Slipping
If the front bearing fails, your clutch may need replacing due to oil contamination.
What Sinspeed repairs, and what it does not
Sinspeed does not rebuild manual gearboxes, so bearing wear inside a Midland box is a job for a gearbox specialist or your garage. If your Mini is an automatic R50 or R52 with the CVT gearbox, symptoms such as jumping into gear or no drive often come from the transmission control module, and that we do repair: see our BMW Mini CVT TCM repair page. Not sure which you have? Contact us and we will tell you plainly.