AI DamageMercedes-Benz E 450 4matic Coupe: problems, complaints, bulletins
Summary for the Mercedes-Benz E 450 4matic Coupe across 2 model years: 1 owner complaints and 39 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- Powertrain: 1 complaints (100% of all); manufacturer bulletins for this component: 16.
Symptoms owners describe
How many of the 1 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) |
|---|---|---|---|
| Powertrain | 1 | 0 | 16 |
| Electrical system | 0 | 0 | 13 |
| Structure | 0 | 0 | 12 |
| Suspension | 0 | 0 | 10 |
| Steering | 0 | 0 | 6 |
| Engine | 0 | 0 | 5 |
| Visibility | 0 | 0 | 5 |
| Fuel/propulsion system | 0 | 0 | 4 |
| Vehicle speed control | 0 | 0 | 4 |
| Exterior lighting | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Other | 0 | 0 | 4 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The contact stated while driving at 40 MPH, the vehicle failed to accelerate as intended and made an abnormal clunking sound. There was no warning light illuminated. The contact had received the recall notification letter of NHTSA Campaign Number 26V216000 (Power Train).
What to check before buying
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- 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 Noises in the steering column area when steering. See example file in the attachments area
- Complaint Red coolant warning in instrument cluster
- Complaint Only vehicles with a variable transfer case are affected
- Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic…
- Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same…
- Dear Mercedes-Benz Owner
- Complaint Tailgate opens unintentionally
- Complaint A popup is seen on the HU with the message "data connection temporarily not available"
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 2026-11-05.