We were recently asked to tune a Mercedes ML W164, 320cdi 224bhp. Tuned, they should be good for 260bhp and 600nm. But the 211bhp engine, is detuned so gains are the same. Also if you buy a 280ML W164, it is detuned to 190bhp and 440nm.. The same engine is fitted to a variety of Mercedes Models, including E Class, C Class, G class, R class and S Class
Wherever possible, buy a lower BHP model which offers a better spec like leather, heated seats, etc… and the money saved could go towards a remap. 
