Well, damn it, I'm here again to tell the tale of this high quality vehicle called Mercedes. Ugh.

On the last 20 mile leg of a 200 mile round trip, I had to slow for a right turning vehicle in front of me. As the cars behind me were coming up on me in a 70 MPH speed zone, I decided it would be nice of me to accelerate quickly to prevent them from slowing way down.

As I laid my foot heavily upon the accelerator, the engine hesitated and the car bucked. At this moment, the CEL came on. The rest of the trip home was down on power and the engine was clearly misfiring.

I'm suspecting plug wires, as the misfire seems pretty consistent. I've never seen plug wires hard fail like that though. Maybe the engine management system is running in limp home mode or something and it's amplifying the bad wire problem.