Mercedes-Benz AMG GLC63 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
8 owner complaints analyzed
21 distinct recall campaigns
12,000 mi median reported failure mileage
Scope: 2018 to 2021 model years. Data snapshot: . 5 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Engine 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 | 2 | 25.0% |
| Steering behavior | 2 | 25.0% |
| Transmission and shifting | 1 | 12.5% |
| Engine operation | 1 | 12.5% |
| Fuel system concerns | 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 |
|---|---|
| Engine | 3 |
| Power Train | 2 |
| Unknown Or Other | 2 |
| Electrical System | 1 |
| Electrical System:Ignition:Coil | 1 |
| Steering | 1 |
| Suspension | 1 |
Engine: 3; Power Train: 2; Unknown Or Other: 2; Electrical System: 1; Electrical System:Ignition:Coil: 1; Steering: 1; Suspension: 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 | 4 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 4; 25,000 to 49,999: 0; 50,000 to 74,999: 1; 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 (4). 3 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 |
|---|---|
| 2019 | 1 |
| 2020 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2025 | 2 |
| 2026 | 1 |
2019: 1; 2020: 2; 2022: 1; 2023: 1; 2025: 2; 2026: 1
Pattern summary
Engine leads the component reports. Braking behavior appears in 2 complaint narratives. Steering behavior appears in 2 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 11682158 · 2025-08-21 (August 21, 2025)
Engine runs rough and activates a flashing engine light. Sounds like the engine is misfiring. On two occasions the engine stalled,(no power steering, brakes...) luckily not in a dangerous situation. No engine codes were visible to a technician when try to diagnose. Car seemed to run fine again after restart.
Owner-reported narrative. Look up ODI 11682158 at NHTSA ↗
Owner report 11725180 · 2026-03-18 (March 18, 2026)
This 2021 Mercedes-Benz GLC 63 AMG has experienced repeated and escalating warranty defects involving engine performance, loss of acceleration, air suspension failure, and now inoperative advanced safety systems including blind spot and active brake assist. Despite numerous repair attempts at authorized dealerships, including extensive engine teardown and cylinder head replacement, the manufacturer has been unable to permanently repair the vehicle. The car has been out of service for 145 cumulative days to date and continues to exhibit safety-r…
Owner-reported narrative. Look up ODI 11725180 at NHTSA ↗
Owner report 11289368 · 2019-12-16 (December 16, 2019)
TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ GLC63C4. THE CONTACT STATED THAT THE STEERING WHEEL SHOOK AND VIBRATED. WHEN TURNING THE VEHICLE, IT WOBBLED, MADE A LOUD KNOCKING NOISE, JERKED, AND SKIPPED WHEN THE CONTACT ATTEMPTED TO COMPLETE A TURN. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF THE WOODLANDS (16917 INTERSTATE I45, CONROE, TX 77385, [phone removed]), BUT WAS NOT DIAGNOSED. THE DEALER TEST DROVE THE VEHICLE AND WAS ABLE TO RECREATE THE FAILURE. THE DEALER STATED THAT THE VEHICLE WAS PERFORMING NORMALLY. THE VEHICLE WAS NOT REPAIRED. THE…
Owner-reported narrative. 15 miles reported. Look up ODI 11289368 at NHTSA ↗
Owner report 11549774 · 2023-10-13 (October 13, 2023)
The contact owns a 2020 Mercedes-Benz GLC63. The contact stated that while his wife was driving at highway speeds, the vehicle inadvertently decelerated while the accelerator pedal was being depressed. The check engine warning light illuminated, and a message displayed on the instrument panel stated that the “Transmission Needs to Cool, Stop and Pull Over Immediately”. The contact stated that the vehicle had locked in first gear and decelerated to approximately 55 MPH. Additionally, the contact stated that his wife was able to navigate the vehi…
Owner-reported narrative. 24,000 miles reported. Look up ODI 11549774 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 6 |
2018: 7; 2019: 8; 2020: 10; 2021: 6