The C240 engines in 203 cars were a 2.6 liter V6 engine and always felt sluggish to me. I used to have a 2002 C230K and it was a very peppy engine in comparison. Maybe by 2002 it was a little more refined because I do not remember it being rough or unrefined. It was just a 4 cylinder engine, usually not as smooth as a six or eight cylinder engine.