Hi Adam,

Yes on all counts I'd say. That V6 diesel engine is a proven Merc unit and in a lightweight car like the CLS, it's spectacularly under-stressed. Watch for white smoke from the exhaust though, as that could indicate a knackered turbo, but other than that as long as it has a full Merc service history (complex car, remember) then you should be fine. Keep an eye on the frameless door glass to make sure it's sealing properly against leaks too.