My experience with Dennys was great. He took the time to properly diagnose the problem which he was unable to fix due to the nature of the problem. However, the initial mechanic that came to fix the car mis-diagnosed the problem and I was charged $300 for a part I did not need. I am trying to get reimbursed for this charge and the service charge that I am sure will be on my credit card for the 2nd and 3rd visits I had. Initial mechanic did not perform all the necessary tests to identify the problem according to Dennys.