After reading your recommendiation of Stephens Mercedes, I decided to give him a try. My '97 E320 was at Sacramento Mercedes-Benz because it ran rough and the check engine light was on. They wanted $2600 to fix it. I read your experiance with Stephens, and called him. He sounded like he knew what the problem was, so I pulled the car out of MB of Sac and let Stephens take a look. I must say, I was impressed right from the start. His shop is very nice. It makes you feel like you are in Germany. Everything is first class. Stephens explained more then the dealer did about the problem. It seems a spark plug worked loose and damaged the threads in the cylinder head. Stephens gave me an estimate that was $2000 less then MB of Sac. He fixed it in one day and it runs fine. Thanks for the recommendiation. Reading this website and Stephens Mercedes saved me $2000.