hi i own a w204 c220cdi

in my opinion i would take it over a c200k

its more economical ,the service interval is same..and the torque is great..

i used to drive only petrols till about 3 years back when i bought a c270cdi..then a e270cdi and now i have even a ml320cdi

well i can give u a direct comparision between the ml350 and ml320cdi

i owned both the 320 which i still have is way better...more power and way way more economical the torque is great...yeah you may miss the sound off the petrol..


but as for the c i havent driven a c200k,,,but the c220cdi which i own is brilliant

hope i am off any help to you question