Erratic engine, increased fuel consumption and 'Check Engine' indicator light on the 2019 Mercedes GLC Diesel

Hey, so I had something similar happen with my 2016 Mercedes GLA Diesel. The accelerator pedal module was faulty. The engine was constantly cutting out and jerking like crazy when accelerating. The "check engine" light also came on from time to time. It turned out that the module was not communicating properly and had to be replaced. This was quite serious, as the full functionality of the car was limited. After the repair, however, everything ran like clockwork again. So if I were you, I would keep an eye on the accelerator pedal module.

(Translated from German)

Hi, thanks for the tip! It's really annoying how quickly something like this can happen. Do you happen to remember how much you had to pay for the repair? And have there been no more problems since then? Is your Mercedes now running smoothly again? Thank you!

(Translated from German)

Hey, sure, no problem! I paid € 205 for the repair of the accelerator pedal module back then. Since then, my Mercedes has been really easy to drive, no more hiccups. As for the throttle valve - you had good intuition there. That was also a mistake, but since the visit to the mechanic, it's no longer an issue. Hope that helps you for now!

(Translated from German)

Great, thanks for the detailed information! Easier said than done, but it's good to know that a visit to the garage can solve the problem. I'll probably tell my mechanic about your experience - €205 isn't cheap, but at least it's less than a new car. I hope that will solve my problems too. Thanks again for your help and I hope your Mercedes continues to run smoothly!

(Translated from German)