AI DamageMercedes-Benz GLS 450 4matic: problems, complaints, bulletins
Summary for the Mercedes-Benz GLS 450 4matic across 5 model years: 0 owner complaints and 290 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 408 |
| Visibility | 0 | 0 | 112 |
| Powertrain | 0 | 0 | 103 |
| Structure | 0 | 0 | 65 |
| Steering | 0 | 0 | 62 |
| Suspension | 0 | 0 | 48 |
| Exterior lighting | 0 | 0 | 47 |
| Service brakes | 0 | 0 | 46 |
| Engine | 0 | 0 | 37 |
| Fuel/propulsion system | 0 | 0 | 20 |
| Backover prevention | 0 | 0 | 16 |
| Seats | 0 | 0 | 14 |
| Engine and cooling | 0 | 0 | 9 |
| Lane departure | 0 | 0 | 9 |
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject…
- Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject…
- Complaint Clanking noise from the area of the speakers in the doors
- Complaint Slight creaking noises when steering
- Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic…
- Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE
- Complaint Sporadic warning message in instrument cluster "Engine oil pressure, stop switch off vehicle"…
- Complaint Red coolant warning in instrument cluster
- Complaint Radio station cover art does not refresh when switching stations
- Complaint Only vehicles with a variable transfer case are affected
- Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area…
- Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious…
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 2026-11-04.