2025 Mercedes-Benz GLC 300 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
16 owner complaints analyzed
3 distinct recall campaigns
4,700 mi median reported failure mileage
Scope: 2025 model year. Data snapshot: . 3 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 11 of 16 complaints (68.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 4 | 25.0% |
| Electrical and battery issues | 4 | 25.0% |
| Fuel system concerns | 2 | 12.5% |
| Transmission and shifting | 1 | 6.3% |
| Engine operation | 1 | 6.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 11 |
| Engine | 3 |
| Unknown Or Other | 3 |
| Forward Collision Avoidance: Automatic Emergency Braking | 2 |
| Seats | 2 |
| Service Brakes | 2 |
| Vehicle Speed Control | 2 |
| Electrical System:Adas | 1 |
Electrical System: 11; Engine: 3; Unknown Or Other: 3; Forward Collision Avoidance: Automatic Emergency Braking: 2; Seats: 2; Service Brakes: 2; Vehicle Speed Control: 2; Electrical System:Adas: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 3; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (3). 13 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2025 | 10 |
| 2026 | 6 |
2025: 10; 2026: 6
Pattern summary
Electrical System leads the component reports. Braking behavior appears in 4 complaint narratives. Electrical and battery issues appears in 4 complaint narratives. Fuel system concerns appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11683653 · 2025-08-28 (August 28, 2025)
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 i…
Owner-reported narrative. 2,000 miles reported. Look up ODI 11683653 at NHTSA ↗
Owner report 11684967 · 2025-09-04 (September 4, 2025)
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-reported narrative. Look up ODI 11684967 at NHTSA ↗
Owner report 11692559 · 2025-10-10 (October 10, 2025)
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 r…
Owner-reported narrative. Look up ODI 11692559 at NHTSA ↗
Owner report 11670954 · 2025-07-02 (July 2, 2025)
In July 2023, I entered into a lease agreement for a 2023 Mercedes-Benz GLC 300 4MATIC SUV (VIN: [XXX]). From the outset, the vehicle suffered from recurring mechanical failures. It required service visits on August 10, 2023; March 25, 2024; July 26, 2024; September 20, 2024; and October 7, 2024. The final incident on [XXX], involved a fuel pump failure that caused the vehicle to stall in traffic, placing me in a terrifying situation where another driver, enraged and armed, threatened me while I waited for a tow truck. Mercedes-Benz acknowledge…
Owner-reported narrative. Look up ODI 11670954 at NHTSA ↗
Owner report 11754184 · 2026-08-01 (August 1, 2026)
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-reported narrative. Look up ODI 11754184 at NHTSA ↗