Problems · NHTSA complaints

2025 Mercedes-Benz GLC-Class problems

Owners filed 16 complaints about the 2025 Mercedes-Benz GLC-Class with NHTSA between Jan 2025 and Aug 2026. The most-cited component is electrical system (12).

Complaints
16
Filed with NHTSA
Crashes
3
Reported by owners
Fires
0
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Electrical system12
  2. Engine3
  3. Forward collision avoidance3
  4. Vehicle speed control2
  5. Seats2
  6. Service brakes2
  7. Exterior lighting1
  8. Structure1
  9. Steering1
  10. Fuel/propulsion system1
  11. Other / unknown3

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 7, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
202510
20266

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Electrical system

12 reports2 crashes1 related recall
“Information screens; speed, gear etc. and middle screen, radio, gps, etc, go blank. Screens are black with no information. There’s also a popping sound happening in the background over the speakers. You can start the car and put it in gear and drive - but with no information in either computer screens. Safety issue for sure! After waiting approximately 3 hours, the 2 screens come on when car is started.”
Owner complaint to NHTSAFiled Aug 22, 2026Electrical systemODI 11758716

Engine

3 reports1 crash
“The contact owns a 2025 Mercedes-Benz GLC 300. The contact stated that while her husband was driving at 5 to 10 MPH attempting to park the vehilce lunged forward traveling 20 feet and crashed into the house. The air bags deployed. No warning lights were illuminated , There was no injuries or fire. A police report was filed. The gas company was on the scene due to a gas leak. Additionally the vehilce was serviced for electrical issues. While reversing in the snow the vehilce lunged 20 feet and crashed into a unknown vehicle causing a scratch. The local dealer was contacted where the EDR was requested. The vehicle was not diagnosed or repaired. The vehilce was towed to a towing lot. The manufacturer was not contacted The failure mileage was approximately 17,107. The vehicle was deemed a total lost.”
Owner complaint to NHTSAFiled Jun 4, 2026Electrical system, Vehicle speed control, EngineCrash reportedODI 11741988

Forward collision avoidance

3 reports1 crash
“The brakes did not function at all. Upon trying to brake, the brake pedal was hard and the car would not stop. The car went into s storefront where the cashier is located and could have resulted in serious injury or death to anyone waiting to pay at the store. The forward collision alarm did not sound, the dashboard indicator for an impending forward collision did not illuminated. The car did not slow down or stop to avoid the collision. The car is currently at the body shop.”
Owner complaint to NHTSAFiled Sep 4, 2025Service brakes, Forward collision avoidanceCrash reportedODI 11684967

Vehicle speed control

2 reports1 crash
“The screen goes blank not only in the middle where the maps, air conditioning and radio is but the screen where the speed gas tank are as well. We have taken the car in at least 5 times stayed the issue and were told there’s no recall yet for the car. I see here that there is. The car was a Richmond Mercedes today the screen went down amd I was told there’s no fix but maybe I could look on the internet. So here I am!”
Owner complaint to NHTSAFiled Aug 1, 2026Exterior lighting, Vehicle speed control, Unknown or otherODI 11754184

Seats

2 reports1 crash
“When I entered my vehicle after it was washed at the Mercedes-Benz service location, I pressed Memory 1 button and the seat returned to my normal position. Without any further input, I started the engine, and the driver's seat automatically moved backward by itself. When I readjusted the seat and shifted into Drive, it continued moving rearward. As the seat moved backward, my feet could no longer reach the brake pedal. At the same time, the car began to move forward, and I lost control of the vehicle, resulting in a collision that damaged the right side doors. This malfunction occurred suddenly and without any warning lights or messages. The seat moved by itself twice-once when the engine started and again when I shifted into Drive. The issue appears to be related to the seat's electrical control system or memory setting malfunction. The dealership has inspected the vehicle but was unable to determine the cause of the problem. I am deeply concerned that this may happen again and could cause a serious injury or major traffic accident. The vehicle has approximately 2200 miles and was purchased new in March 2025. I am requesting a formal investigation to determine…”
Owner complaint to NHTSAFiled Oct 10, 2025Electrical system, Seats, Service brakesCrash reportedODI 11692559

Service brakes

2 reports2 crashes
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.