Most common 2025 Mercedes-Benz GLC300 problems
Share of the 26 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz GLC300 complaints by model year
Best GLC300 years: 2019, 2018. Years to avoid: 2023, 2022. Compare all years →
2025 Mercedes-Benz GLC300 recalls (3)
Electrical system › Instrument cluster/panel
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class, E-Class, SL, CLE, and GLC vehicles. The infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blank.
Remedy: Dealers will update the infotainment control unit software, free of charge. Owner notification letters were mailed June 29, 2026. MBUSA's number for this recall is 2026050004.
Steering › Critical fasteners
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2026 EQE and GLC vehicles. Please see the recall report for a complete list of models. The steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rack.
Remedy: Dealers will tighten the steering coupling bolts as necessary, free of charge. Owner notification letters were mailed October 6, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.
Structure › Body › Roof and pillars
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2025 GLC 300, GLC 300 4MATIC, 2024-2025 AMG GLC 43 4MATIC, 2025 GLC 350E 4MATIC, and AMG GLC 63 S E vehicles equipped with a panoramic sunroof.
Remedy: Dealers will modify the roof lining and C-pillar trim, free of charge. Owner notification letters were mailed July 9, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.
What 2025 Mercedes-Benz GLC300 owners say
Electrical system
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.
The contact owns a 2025 Mercedes-Benz GLC300. The contact stated that while driving approximately 30 MPH, there was an abnormal grinding sound coming from the vehicle. The contact stated that the brake assist suddenly activated and the vehicle came to an abrupt stop, causing the seat belt to immediately retract and lock. The contact was slightly jerked from the abrupt stop. The contact stated that a warning light with a red triangle with an image of a crash in the center was illuminated. The contact stated that after starting the vehicle, the infotainment center and the instrument panel were completely black. The vehicle was restarted several times before both systems started operating as needed. …
Driver assistance
The contact owns a 2025 Mercedes-Benz GLC300. The contact stated that while driving approximately 30 MPH, there was an abnormal grinding sound coming from the vehicle. The contact stated that the brake assist suddenly activated and the vehicle came to an abrupt stop, causing the seat belt to immediately retract and lock. The contact was slightly jerked from the abrupt stop. The contact stated that a warning light with a red triangle with an image of a crash in the center was illuminated. The contact stated that after starting the vehicle, the infotainment center and the instrument panel were completely black. The vehicle was restarted several times before both systems started operating as needed. …
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.
Engine & cooling
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.
I am writing to formally express my deep dissatisfaction and serious concerns regarding both my 2024 and 2025 Mercedes-Benz vehicles, purchased/leased through your dealership. I am now facing an unacceptable situation that not only violates my consumer rights but has repeatedly placed my personal safety in jeopardy. After significant issues with my original 2024 vehicle, I was provided a replacement, which I took delivery of on October 15, 2024. Unfortunately, within two weeks, the replacement vehicle was already back in the shop for repairs. It has since required service again on December 24, December 31, and most recently, May 28, 2025. On one particularly alarming occasion, the vehicle shut off in the middle of the road, creating an extremely hazardous and life-threatening situation. …
2025 Mercedes-Benz GLC300 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo hybrid | 9-speed automatic | RWD | 24 / 32 / 27 |
EPA ratings. Class: Small SUV.
Frequently asked questions
Is the 2025 Mercedes-Benz GLC300 a good car?
Based on 26 owner complaints filed with NHTSA, the 2025 GLC300 rates average: 1.2× as many complaints as a typical year of the GLC300 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2025 Mercedes-Benz GLC300?
The electrical system — 18 complaints, 69% of all complaints for this model year, most often about adas. Next are the driver assistance (5) and engine & cooling (3).
How many recalls does the 2025 Mercedes-Benz GLC300 have?
There are 3 recalls for the 2025 Mercedes-Benz GLC300, the most recent from May 1, 2026 (instrument cluster/panel). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz GLC300?
The best years by complaints, compared at the same age, are 2019 and 2018. Years to avoid or approach with caution: 2023 and 2022. See the full Mercedes-Benz GLC300 years comparison.
At what mileage do 2025 Mercedes-Benz GLC300 problems happen?
The median mileage reported in complaints is about 5,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.