I'm at 226k miles and doing the head gasket. I am looking at a sensor in the 4matic system and a tired spring on the driver front wheel. The car is not stored in a garage an is getting a few spots of rust. I am/will be fixing all that is working as my target is 320k miles/500k kilometers.

If you don't mind repairs over new car payments keep this car. I have a self-leveling suspension, electric mirrors and the best ride available. The best thing is that it doesn't take synthetic oil, require MB fluids, and an independent mechanic can work on it.