Dear All,

I've owned 2009 SL550 for 2months now and what I have experienced so far is car has rough idle at park position or stop at light.

Is your car have rough idle when it's not moving? I had the dealer to looked at it but they told me it is normal de to size of engine.

I thought MB supposed to be quite or maybe I'am wrong..

Yr opinion really counts.

 

Different car but same engine, my wife's E550 you could balance a nickel on while it's running, that engine is smooth.

 

Thanks, I guess I better take my car to the dealer.