One problem related to coolant leaking 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.
I had this car serviced about 4 times during the 4 yr warranty period. Just after the warranty period, the car was checked for brake job and I was informed that the water pump leaks. I think the coolant provable was leaking prior to expiration of warranty but I was not informed. I bought 3 cars in 2007 (Honda and Lexus) and none of them has this issue. 1. Engine coolant leaks. Replace water pump. 2. Engine hood latch won't open. Failed remote latch. The Mini Cooper estimate will cost me $800 to replace the water pump. I also overheard from one of the Mini owner last sat, 26nov2011 during my visit to the dealer that he also has the same issue leaky water pump.