^ I think you can do better than that. Heck, Aamco does free scans and diagnostic. I bought an e53 that I thought needed a new trans. A non car-savvy buddy told me they do free diag, so I took it in and was extremely impressed with their car-specific knowledge. I mean a national chain and a German car? I was very surprised. Like any shop, service depends on how good their techs are, but my advice would be to have someone knowledgable look at it before making any big decisions.