Moin, I drive a Smart451 (BJ2012 with only 25TKM), which I took over 4 years ago from 1st hand, basically little driving (about 3-5TKM per year) and was maintained by a Mercedes workshop every year checkbook. I don’t plan to leave the car anymore and remember that this year a “big inspection” is due. Now I wonder if checkbook in a Mercedes workshop, which is quite expensive, is still worth it? I have acquaintances, who know each other well with cars and would “repair” the smart for a fair deal, I just have to tell them what to do. What is your opinion about it? If you let friends do what I know (there is a catalog on the Internet)? Greeting, Constantin