I brought my Mercedes CL600 here for multiple issues it was having after another shop messed it up. Needless to say, complicated electronics on a Mercedes Benz is not something I felt comfortable trying to fix on my own. A2Z owner, Artur, is EXTREMELY knowledgeable in high end European cars, especially Mercedes Benz. He was able to diagnose the problems, correct them, and finish the job in a timely manner, as promised. I'll never go back to a dealer again when Artur can do the, job just as well, for much less. Nothing but praise for this company.