Wonder if anyone can shed some light on this for me. I bought my first Mercedes the other day and all seems fine, very pleased. Gear changes are smooth and the only problem I had found was at very slow speeds in moving traffic it feels like it changes down to first with a bit of a jolt, more noise than physical. If i come to a complete stop or accelerate from slowing down this does not happen. Is this normal. My friend has an auto vauxhall that does the same so not sure. Also noticed the other day that if I floor it hard it will not change up so wondered if it is slipping when reved high but not noticable when driven normal. After doing this though, it seems to go into a juddery vibrating state but if I switch of the ignition and start again it is fine. Could it be electrical. My only referance is an S-Type I had that slipped really bad but that was leaking from a gasket severly and you could hardly drive it. I have seen no real signs of leaking on the drive way. Hope this makes sence to someone as any help would be greatly appreciated!