I have to say that they did a great job on our transmission. No problems after that. The price on the rebuilding was life saver compared to the price in the Mercedes dealership. Very reliable place to go to for general maintenance as well and my niece and my son are taking their cars at that shop as well and are happy motorists.
I had my oxygen sensor replaced. My experience was so much better than I'm used to at my Honda dealer. The guys were polite, reliable and efficient. Twice when they said they'd call back, they did so within minutes. They replaced the broken part in about an hour and charged $100 less than my dealer had quoted. Don't let the youth and tattoos discourage you. I've lived in Bethesda for ten years. I'd almost forgotten what professionalism feels like. It was well worth the trip to Rockville and I'll return for future repairs.