Did not realize the thermostat was bad until I went in due to a horrible shifting and jerking of the transmission - caused me to think I'd been rear ended on several occasions due to the severe jolt. The problem could not be replicated the first couple of times I took it into the dealership. -Though it happens EVERY time I drive it. Finally, after the third or fourth time I took it in - ALL FOUR MOTOR MOUNTS WERE BROKEN! Oh, NOW they believe me! They re-flashed the software and said it was fixed. It was not. I was forced to pay a $100 deductible so that it would be covered under the warranty later on.