Just so you know, I wanted to see what's the top speed for the C class (240, 320). I've got my car in Feb of 2001, plenty of time to run in the engine. Standard engine on my C240, I was max speed at 128 mph. The car was so quiet, my pedal was down flat on the floor. I could have gone more if the car wasn't governed at 128 (chiped).<br> Any of you took it to higher speeds with regular engine on?