2024 Mercedes-Benz GLC 300 4MATIC problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
8 owner complaints analyzed
3 distinct recall campaigns
31,153 mi median reported failure mileage
Scope: 2024 model year. Data snapshot: . 1 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Forward Collision Avoidance: Automatic Emergency Braking is the most frequently named component, appearing in 3 of 8 complaints (37.5%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 4 | 50.0% |
| Transmission and shifting | 1 | 12.5% |
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 |
|---|---|
| Forward Collision Avoidance: Automatic Emergency Braking | 3 |
| Structure:Body:Hatchback/Liftgate | 2 |
| Back Over Prevention: Sensing System: Camera | 1 |
| Back Over Prevention: Warnings | 1 |
| Electrical System | 1 |
| Engine | 1 |
| Forward Collision Avoidance | 1 |
| Lane Departure: Blind Spot Detection | 1 |
Forward Collision Avoidance: Automatic Emergency Braking: 3; Structure:Body:Hatchback/Liftgate: 2; Back Over Prevention: Sensing System: Camera: 1; Back Over Prevention: Warnings: 1; Electrical System: 1; Engine: 1; Forward Collision Avoidance: 1; Lane Departure: Blind Spot Detection: 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 | 0 |
| 25,000 to 49,999 | 1 |
| 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: 0; 25,000 to 49,999: 1; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
25,000 to 49,999 miles has the most reports with usable mileage (1). 7 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 | 1 |
| 2026 | 7 |
2025: 1; 2026: 7
Pattern summary
Forward Collision Avoidance: Automatic Emergency Braking leads the component reports. Braking behavior appears in 4 complaint narratives. Transmission and shifting appears in 1 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 11690219 · 2025-09-28 (September 28, 2025)
While carrying my carbon fiber bicycle on a rear hitch mounted bicycle carrier, the vehicle severely and violently applies the brakes and swerves either left or right or both. This catastrophic maneuver has put me and other drivers in a non avoidable highly calamity. This “AUTO” maneuver happens dozens of times in during a fifteen mile trip to local bicycle trails. Dealer replaced the Trailer Recognition Module 9-24-2025. As expected, dangerous situation remains. Happens every opportunity when carrying bicycles. First exhibited after purch…
Owner-reported narrative. Look up ODI 11690219 at NHTSA ↗
Owner report 11735615 · 2026-05-04 (May 4, 2026)
The contact owns a 2024 Mercedes-Benz GLC 300. The contact stated that while driving at approximately 35 MPH, the brake was applied unexpectedly without the contact depressing the brake pedal. The contact stated that she was unsure if the forward collision system was turned on at that time. The driver's seat belt tightened, and she sustained a bruise on her left arm and soreness on her chest. Medical attention was required. The vehicle was taken to a dealer where they were not able to replicate the failure. On another occasion, while parked, th…
Owner-reported narrative. 31,153 miles reported. Look up ODI 11735615 at NHTSA ↗
Owner report 11751243 · 2026-07-18 (July 18, 2026)
The vehicle presented multiple warnings/errors before shutting down on the street in traffic on June 23, 2026. Warnings such as Collision Detected, Blind Spot Assist and Exit Warning Inoperative, PRE-SAFE Inoperative, System Failure Detected, Service Required Do Not Shift Gear, along with various lights on the dashboard which includes the Check Engine Light. The vehicle was towed to local Mercedes Benz dealership which reported the issue was with a drive train module that required a software update, the update was performed and vehicle was ret…
Owner-reported narrative. Look up ODI 11751243 at NHTSA ↗