2017 Mercedes-Benz GLC300 engine problems
37 owner complaints filed with NHTSA name the engine on the 2017 Mercedes-Benz GLC300 — 38% of all complaints for this model year.
What owners report
“-The malfunctioned component is the Positive Crankcase Ventilation. - Vehicle wanted to stall and did not want to accelerate while in the middle lane on the highway with my family. - Yes it has been diagnosis by certified mechanic - The check engine light turned on at the time of the incident and…”
filed Apr 16, 2025
“I was driving and my engine light came on. I ran the code and it came up as P052E which has to do with the positive crankcase ventilation regulator valve. I’ve heard that this part goes out very often on the Mercedes Benz.”
filed Mar 28, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- In the event that the engine or transmission cannot turn over, the starting current…Campaign 17V114000 · Feb 23, 2017
Engine problems in other GLC300 years
| Year | Reports | Share |
|---|---|---|
| 2016 GLC300 | 38 | 29% |
Other reported problem areas on the 2017 Mercedes-Benz GLC300
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.