AI DamageMercedes-Benz AMG GL63: problems, complaints, bulletins
Summary for the Mercedes-Benz AMG GL63 across 4 model years: 8 owner complaints and 69 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Engine 38% of all complaints
- 2 Electrical system 25% of all complaints
- 3 Service brakes 25% of all complaints
- 4 Structure 25% of all complaints
- 5 Steering 25% of all complaints
- 6 Air bags 13% of all complaints
- 7 Electronic stability control 13% of all complaints
- Engine: 3 complaints (38% of all); manufacturer bulletins for this component: 5.
- Electrical system: 2 complaints (25% of all); manufacturer bulletins for this component: 19.
- Service brakes: 2 complaints (25% of all); manufacturer bulletins for this component: 8.
- Structure: 2 complaints (25% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 4.
- Steering: 2 complaints (25% of all); manufacturer bulletins for this component: 1.
Symptoms owners describe
How many of the 8 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 3 | 0 | 5 |
| Electrical system | 2 | 0 | 19 |
| Service brakes | 2 | 0 | 8 |
| Structure | 2 | 1 | 4 |
| Steering | 2 | 0 | 1 |
| Air bags | 1 | 1 | 0 |
| Electronic stability control | 1 | 1 | 0 |
| Exterior lighting | 0 | 0 | 11 |
| Equipment | 0 | 0 | 6 |
| Suspension | 0 | 0 | 6 |
| Powertrain | 0 | 0 | 5 |
| Engine and cooling | 0 | 0 | 4 |
| Visibility | 0 | 0 | 3 |
| Wheels | 0 | 0 | 2 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Air bags did not deploy approximate speed of my mb g 63 , 2013 was around 35-40 mph on actual point of impact. Road speed limit was 45 mph. Roads were clear, weather was cold, no ice or rain. Seat belt retraction on passenger side caused sternum fracture to the passenger occupant.
Corrosion was found where composite insulator covers crossover tube that allowed weakening of pipe and subsequent loss of braking action. Leak was substantial enough that both channels of master cylinder were deprived of fluid, total loss of brakes, vehicle required towing.
Both times, the vehicle developed misfires, check-engine warnings, and drivability issues that could have led to stalling at highway speeds. On both occasions, the vehicle has been completely disabled. Repairs required replacement of the wiring harness, ECU, sensors, and fuse box, costing over $5,600.
Spontaneous shattering of anterior sunroof at highway speeds with no cars around and not near overpasses. Shattered glass rained all throughout the vehicle and passengers. Sounded like a gunshot and the glass appeared to be bowed out.
The power steering wheel is stuck at the top position once in a while. 2. Active curve system pump will fail and leak fluids [ZIP]-40000 miles.
The vehicle misfired while driving on city streets and presented a code for faulty ignition coils. Upon inspection, mercedes-benz service center found oil in the engine wiring harness rendering the car undriveable.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Complaint Clanking noise from the area of the speakers in the doors
- Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE
- Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same…
- Complaint A popup is seen on the HU with the message "data connection temporarily not available"
- Complaint Clanking noise from the area of the speakers in the doors
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering…
- Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering…
- Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD…
- Complaint The customer requests deactivation of the N112/9 HERMES communication module Note
- Complaint Noises at the front axle when cornering or maneuvering (video files attached) Note
- Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering…
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.