My daughter has a 2006 Mini Cooper and has a recurring coolant problem. The car consumes coolant. The car has been to the dealer three times before today and now a 4th time today. The 1st time at 32,000 miles the dealer replaced the thermostat. The 2nd time at 38,000 the dealer did nothing! the 3rd time at 53,000 miles (out of warranty) the dealer recommended a new thermostat for $600 and a new cooling fan for $600. I replaced both myself. Now 2,000 miles later it still consumes coolant and today she had to visit the dealer and got the thermostat changed for $350. I'm concerned there may be a head gasket leaking and the coolant is being burned. Thought/help?