The car was handed in with problems (no error mess...
The car was handed in with problems (no error message) and after the check was "typed" it could be a transmission damage. Checking this would cost around 700. Further speculations were still circuit and something else.
When I picked up the car, of course, I wanted to know more. That was not possible because the colleague who worked on it had finished work. I'm still waiting for an offered phone call.
Small comparison to another workshop: the car was there for 2 days, unfortunately without any result BUT I got a rental car for FREE> Mercedes 50 per day! <in addition, the other workshop did NOT charge a CENT. > Mercedes sends an invoice of 164. That something is calculated is still ok. They checked something, but what should I do as a customer? No mistake found, just guesswork and not even more information. I'll never go there again.