One problem related to o2 sensor has been reported for the 2007 Mini Cooper. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mini Cooper based on all problems reported for the 2007 Cooper.
Thermostast housing replacement and water pipe. Cooling system needs to be flush. Engine rebuild due over heating. Oxygen sensor replacement. Timing chain replacement. Thermostast replacement.