Yikes I've never had a car with more than 35k.
My bro's clk55 went arse up and the gearbox had to get replaced. Great car though, gearbox problems aside , but a bit boaty, more cruiser than sports car tbh.
I'd be careful with high mileage stuff. Even though the engine is solid you've got to remember all the bushes and bearings will have done these miles also and could be deteriorating or perishing which could cause some bills.