Mercedes GLC problems (2018) with the exhaust gas recirculation or EGR valve

Hey, I had a similar problem with my 2017 Mercedes GLE Diesel. My EGR valve was also defective or stuck. The symptoms were pretty much the same as yours: check engine light, loss of power, and rough engine running. I have some experience with cars, I would say "low experience". When I had the problem, I went straight to the garage. They made the diagnosis and confirmed that it was indeed the EGR valve. The replacement cost me 355 euros. After that, my GLE ran like a dream again. Can you tell me your exact vehicle model and year of manufacture? Maybe I can then give you more precise tips on what steps you should take next. Good luck and hopefully your GLC will be running smoothly again soon! Regards

(Translated from German)

Hey, thanks for your reply. My GLC is a 2019 model and now has 176432 km on the clock. I had the last service done about 5,000 km ago. I'll probably pop into the garage and have the EGR thing checked. Hopefully it won't be too expensive, but your 355 euros sounds reasonable. Greetings and thanks again!

(Translated from German)

Hey, no problem, gladly! My GLE had similar mileage when the problems started. I can only advise you to have the EGR valve checked quickly, otherwise it could cause further damage, which would then be even more expensive. In my case, the 355 euros were for replacement and labor, which was actually pretty fair. A tip: If your local garage is not so transparent with the costs, maybe just ask another one and ask for a quote. Sometimes it's worth driving a little further for a better service and fair prices. I'll keep my fingers crossed that it can be fixed quickly and cheaply. Let us know how it goes! Best wishes and good luck!

(Translated from German)

Hey, I'll definitely take your advice and have the EGR valve checked. If it's just that, then I'm glad it can be fixed relatively cheaply. I'll also ask for estimates like you suggested. Thanks for your tips and for sharing your experience! Regards and hopefully my GLC will be running smoothly again soon!

(Translated from German)