Good little engine to m111. I have one in an E230. Very reliable and as one other said - MAF's were a common failiure.

Also if it has a 722.6 transmission, I would be concerned at that mileage.

Mine had 144 000 km on it when purchased, and as per mercedes service reccomendations, the fluid had never been changed. I got it done because of peace of mind. It was filthy. I only did a fluid change, but I will do filter and oil soon.

Some sort of history would be preferable - otherwise its a lottery.