Turbocharged MINI Cooper engines have a few problem areas shops are starting to see more often.
In this Inside the Brands episode, CRP Automotive discusses common failures on turbocharged MINI Cooper S and John Cooper Works models from 2007 and newer. These are turbo engines, not supercharged, and they can develop issues that eventually lead to head gasket repairs.
Problems reported from the field include timing chain stretch, burnt valves, and overheating. When cylinder head damage occurs, resurfacing the head is often required. Once material is removed, the original head gasket may no longer provide proper sealing.
This video explains why an oversized head gasket is sometimes necessary during MINI turbo engine repairs.
How machining the cylinder head affects gasket thickness.
Why correct torque specs and tightening sequence matter when reinstalling the head.
CRP Automotive offers AJUSA oversized head gaskets designed to compensate for material removed during machining. Each gasket includes installation instructions with the proper torque specifications and sequence to help ensure a reliable repair.
This episode is a heads-up for technicians working on MINI turbo vehicles and a reminder that proper sealing is critical once engine work goes beyond basic service.









