You should find out if the repairs were, in fact, made by an MB dealer. They'll stand by their work. I get about one or two 210's every month with rusted out spring perches. So far, MB has paid to fix them all, no questions asked. Many of these cars are high mileage pieces of junk with no service history, and a few have had several different owners. In the eyes of MB it doesn't make any difference. Our MBUSA approved body shop fixes them up good as new and down the road they go. Before you reach into your own pocket, give your dealer a call.