Originally Posted by saskins
I completely understand about the Jump. Mercedes is famous for poor acceleration. You have to roll on the throttle, you can't just grip it and rip it, if you will. The other thing that you might be able to look into... You might want to check your intake manifold. If you have a real poor idle, and seems like it could be diving in the RPMS. You may have a bad one. The SLK, & CLK classes apparently have a 50/50 chance unfortunately. I guess they have a high rate of failure.
Mercedes is famous for poor acceleration? Have you looked at any of the acceleration figures for the AMG's? An E55 wagon hitting 0-60 in the mid-low 4's and the quarter in the 12's, stock. Do you consider this poor acceleration? How about the SL65 1/4 mile time in the 11's stock? Or the SLK32/SLK55 running the quarter in the high 12's stock. Not sure how this is considered poor acceleration.
As for just grip & rip it. You are correct. The car takes a little more finesse than that. It has to do with lots of low end torque and rather small (compared to the hp/tq figures) rear tires.