AI DamageMercedes-Benz EQB 300 4matic: problems, complaints, bulletins
Summary for the Mercedes-Benz EQB 300 4matic across 4 model years: 75 owner complaints and 169 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Electrical system 75% of all complaints
- 2 Fuel/propulsion system 19% of all complaints
- 3 Engine 12% of all complaints
- 4 Powertrain 8% of all complaints
- 5 Forward collision avoidance 5% of all complaints
- 6 Service brakes 4% of all complaints
- 7 Vehicle speed control 3% of all complaints
- 8 Visibility 1% of all complaints
- Electrical system: 56 complaints (75% of all), 2 of them with a crash reported by the owner; manufacturer bulletins for this component: 320.
- Fuel/propulsion system: 14 complaints (19% of all).
- Engine: 9 complaints (12% of all); manufacturer bulletins for this component: 19.
- Powertrain: 6 complaints (8% of all); manufacturer bulletins for this component: 10.
- Forward collision avoidance: 4 complaints (5% of all); manufacturer bulletins for this component: 10.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- electric 2022–2025
- automatic, 1-speed 2022–2025
Drive: AWD
Symptoms owners describe
How many of the 75 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) |
|---|---|---|---|
| Electrical system | 56 | 2 | 320 |
| Fuel/propulsion system | 14 | 0 | 0 |
| Engine | 9 | 0 | 19 |
| Powertrain | 6 | 0 | 10 |
| Forward collision avoidance | 4 | 0 | 10 |
| Service brakes | 3 | 2 | 15 |
| Vehicle speed control | 2 | 1 | 0 |
| Visibility | 1 | 0 | 50 |
| Lane departure | 1 | 0 | 14 |
| Backover prevention | 1 | 0 | 12 |
| Air bags | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Wheels | 1 | 0 | 0 |
| Structure | 0 | 0 | 52 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
I was driving very slowly down a residential side street and started to pull over to the right side to park behind a car. This parking spot was on a slight incline and the curb was made up of two slanted cobblestones.
I strongly believe this was caused by a software or system bug, as the sudden acceleration occurred without my intervention. Please investigate this issue thoroughly, as it raises serious safety concerns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact stated that his wife was parking inside the garage, and the brake pedal was depressed she felt the brake pedal was vibrating, and the vehicle then accelerated independently. The contact stated that after several times depressing the brake pedal, the vehicle was able to come to a stop.
The contact stated that the EV battery warning light was constantly illuminated. The vehicle was taken to two dealers, including Napleton Autowerks of Indiana ([address], Schererville, [ZIP]), who confirmed that the parts were not yet available.
The vehicle was pulled over to the right side of the road, and the contact selected the option on the radio, and the message disappeared immediately. The contact continued driving and then reversed, and the message was displayed again, and the brakes independently engaged.
Crucially, the certified technician noted a grinding noise coming from the axle drive module, which occurs specifically when slowing down. These symptoms perfectly mirror the known manufacturing defects outlined in NHTSA Recall 24V331 for the 2022 EQB front axle drivetrain failure.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
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 Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE
- Complaint Radio station cover art does not refresh when switching stations
- Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same…
- Complaint Tailgate opens unintentionally
- Complaint Customer Complaint
- Complaint 1
- Complaint AC and DC charging are not possible
- Complaint Clanking noise from the area of the speakers in the doors
- Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
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.