2017 Mercedes-Benz GLC 300 Forward collision avoidance Problems
- Complaints
- 4about this part
- Share
- 4%of 101 total for the year
- Median mileage
- 77,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the forward collision avoidance of the 2017 Mercedes-Benz GLC 300, 4% of the 101 complaints for this model year. Where a mileage was given, the median is 77,500 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the messages Driver’s Air Bag Malfunction - Service Required and Collision Prevention Assist Unavailable were displayed. The vehicle was taken to an independent mechanic who diagnosed and determined that the air bag had malfunctioned. The vehicle was not repaired. The contact called the dealer, but the vehicle was not inspected or repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. …”
NHTSA complaint #11715404, filed 2026-02, 130,000 miles“The contact owns a 2017 mercedes benz GLC300. The contact stated that while his wife was driving approximately 40 MPH, the vehicle crashed into a 2nd vehicle. During the crash the front end was severely damaged but the air bags did not deploy. Also, the collision avoidance system malfunctioned and did not stop the vehicle to avoid the collision. The driver sustained bruises to the torso area which required medical treatment. An occupant from the 2nd vehicle was transported to the hospital by ambulance. No further information was available. …”
NHTSA complaint #11338128, filed 2020-07, 25,000 milesForward collision avoidance: other model years
Other parts of the 2017 Mercedes-Benz GLC 300
37 complaintsFuel system
16 complaintsElectrical system
15 complaintsOther or unknown
13 complaintsAir bags
11 complaintsSeat belts
8 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsTransmission and drivetrain
7 complaintsBrakes
4 complaintsSteering
4 complaintsTires
3 complaintsSeats
2 complaints
← All problems reported for the 2017 Mercedes-Benz GLC 300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology