i have had 7 merc sprinters over the years 310. 312. then onto the cdi models 311, 313, 315 ( 315 is bad on diesel..) i m a flooring contractor so need the 4 mt load leangth.
i have drove them to over 300,000 miles, never had many problems .
injector seals would go in them every 70k but if you change them then no probs. just keep them well serviced.

i have 2 new ish ones now , a 311 cdi and a 313 cdi . ones on 30k and the other is on 44k . all i can say is they drive like a car.. and never had any problems as yet

many thanks steven