repaired · 2025 Q4
Body: roof and pillars
Risk. A detached roof panel can become a road hazard, increasing the risk of a crash.
2017 Mercedes-Benz GLC 300Problems, recalls & complaints
NHTSA has logged 102 owner complaints about the 2017 Mercedes-Benz GLC 300, most often about the engine. It is covered by 12 safety recalls, and for recall 23V-854 the manufacturer reports only 41% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through November 5, 2026. Updated daily.
Complaints by system
Where the 2017 Mercedes-Benz GLC 300 has problems
102 complaints grouped by the system owners reported.
37Engine3 crash/fire/injury
16Electrical system1 crash/fire/injury
14Fuel/propulsion system
12Air bags1 crash/fire/injury
8Seat belts
7Power train
6Visibility
5Steering
4Forward collision avoidance
1911 other systems2 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 37 | 3 |
| Electrical system | 16 | 1 |
| Fuel/propulsion system | 14 | 0 |
| Air bags | 12 | 1 |
| Seat belts | 8 | 0 |
| Power train | 7 | 0 |
| Visibility | 6 | 0 |
| Steering | 5 | 1 |
| Forward collision avoidance | 4 | 1 |
| 11 other systems | 19 | 2 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
12 recalls
2017 Mercedes-Benz GLC 300 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2023 Q3
Body: roof and pillars
Risk. The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the…
repaired · 2023 Q3
Communication
Risk. A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying…
repaired · 2023 Q4
Communication: auto crash notification
Risk. Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Show 8 more recalls
repaired · 2020 Q1
Rear/other: buckle assembly
Risk. If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
repaired · 2019 Q3
Rear/other: buckle assembly
Risk. If the rear seat passengers cannot fasten their seat belts, they have an increased risk of injury in the event of a crash.
repaired · 2019 Q2
Exterior lighting: headlights
Risk. An insufficiently illuminated roadway may increase the risk of a crash.
repaired · 2019 Q1
Visibility: sun/moon roof assembly
Risk. If the sun roof panels detach from the vehicle, it can increase the risk of a crash or injury for following traffic.
repaired · 2019 Q4
Air bags: frontal
Risk. If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
repaired · 2019 Q1
Steering: electric power assist system
Risk. The improperly welded pins may lose contact, deactivating the power steering assist and increasing the risk of a crash.
repaired · 2019 Q1
Seat belts: pretensioner
Risk. If the front seat seatbelt pretensioners do not function properly, the seat occupants may not be adequately restrained in the event of a crash, increasing the…
repaired · 2018 Q4
Electrical system: starter assembly
Risk. If the starting current limiter overheats, the surrounding components can melt, increasing the risk of a fire.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mercedes-Benz.
Best & worst years
2017 vs. every other GLC 300 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the GLC 300 median. How we score
'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
2 investigations
NHTSA defect investigations
Federal investigations that included the 2017 Mercedes-Benz GLC 300, and the recalls they led to.
- Desiccated Air Bag Inflator RuptureOpen
- Front Roof Panel DetachmentLed to recall 21V-197
In owners' words
What GLC 300 owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
-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…
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.
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken back to the dealer and the contact was informed that the vehicle was repaired. The contact stated that the dealer had only reset…
Own a 2017 GLC 300?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.