AI Damage2023 Mercedes-Benz EQB 300 4matic: common problems
Owners of the 2023 Mercedes-Benz EQB 300 4matic filed 54 complaints with NHTSA, most often about electrical system and fuel/propulsion system. The maker issued 156 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 54
- involving a crash
- 1
- Technical service bulletins (TSB)
- 156
What fails most often
- 1 Electrical system 72% of all complaints
- 2 Fuel/propulsion system 17% of all complaints
- 3 Engine 11% of all complaints
- 4 Powertrain 9% of all complaints
- 5 Forward collision avoidance 6% of all complaints
- 6 Service brakes 4% of all complaints
- 7 Visibility 2% of all complaints
- 8 Lane departure 2% of all complaints
- Electrical system: 39 complaints (72% of all); manufacturer bulletins for this component: 89.
- Fuel/propulsion system: 9 complaints (17% of all).
- Engine: 6 complaints (11% of all); manufacturer bulletins for this component: 5.
- Powertrain: 5 complaints (9% of all); manufacturer bulletins for this component: 2.
- Forward collision avoidance: 3 complaints (6% of all); manufacturer bulletins for this component: 3.
Symptoms owners describe
How many of the 54 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 | 39 | 0 | 89 |
| Fuel/propulsion system | 9 | 0 | 0 |
| Engine | 6 | 0 | 5 |
| Powertrain | 5 | 0 | 2 |
| Forward collision avoidance | 3 | 0 | 3 |
| Service brakes | 2 | 1 | 4 |
| Visibility | 1 | 0 | 14 |
| Lane departure | 1 | 0 | 4 |
| Backover prevention | 1 | 0 | 3 |
| Air bags | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Wheels | 1 | 0 | 0 |
| Structure | 0 | 0 | 16 |
| Steering | 0 | 0 | 12 |
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 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.
Recall 25V050/MBUSA campaign [phone] concerns a potential internal battery-cell short circuit and fire risk. I had the BMS software update performed, but Mercedes later issued recall 26V073 because the software remedy was not considered sufficient for all affected vehicles.
I am reporting a safety concern because my vehicle is subject to NHTSA Recall 25V050, which identifies a risk that the high-voltage battery could fail internally and cause a fire while parked or driving.
The contact was concerned that the manufacturer provided limited safety risk information and that the vehicle could catch on fire during a crash. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted several times about the issue.
My 2023 Mercedes-Benz EQB is included in the high-voltage battery fire recall (NHTSA campaign 26V073). The recall states the battery cells may fail internally at a high state of charge, causing an internal short circuit and a potential fire whether the vehicle is parked or being driven, with no advance warning while…
Safety Catch-22 (Fire vs. Theft): Due to the fire hazard associated with the current battery recall, I cannot safely charge or store the vehicle in my garage. However, the local Township Police have explicitly advised against keeping the car outside due to high theft risks in the area.
The notice states that the high-voltage battery may fail due to an internal short circuit, potentially causing a vehicle fire while parked or driving. No incident has occurred. This complaint is filed because no remedy is available and no timeline has been provided by the manufacturer.
I was instructed not to fully charge the vehicle and warned that it may pose a fire hazard if parked inside my garage. These warnings indicate a serious safety defect involving the highâvoltage battery system. The vehicle cannot be safely stored at my residence, and its normal operation is substantially impaired.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 5,128 of 36,656 model years in the NHTSA data (top 14% most complained about).
On average one model year of the EQB 300 4matic has 19 complaints (4 years in the data). This year has 54, above average.
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
Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and…
- Complaint Slight creaking noises when steering
Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.
- Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE
Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration…
- Complaint Radio station cover art does not refresh when switching stations
The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a temporary glitch is causing the Head Unit application to fail to overwrite…
- Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same…
Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering…
- Complaint Tailgate opens unintentionally
Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so…
- Complaint Customer Complaint
AC charging is not possible. - The departure time, charging pause, location-based charging or target SOC limit is automatically set to 50% or to a random value in the Mercedes me application or in the charging settings…
- Complaint 1
General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root…
- Complaint AC and DC charging are not possible
The white LED on the charging inlet completely goes OFF after plugging in the charging cable. Related DTCs in quick test: There are no related fault codes (DTCs) stored in relevant control units. CPC3 - N127…
- Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465
SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles…
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the…
- Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167
SW has been released. Update the FSAM to the latest SW version. 465, 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key…
NHTSA lists 156 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2023 Mercedes-Benz EQB 300 4matic?
Owner complaints to NHTSA most often mention: electrical system, fuel/propulsion system, engine. Total complaints: 54. The most frequent symptoms in complaint texts: smoke, burning smell, fire (50%), warning lights, check engine (6%), windows, sunroof (4%).
How many service bulletins (TSB) were issued for the 2023 Mercedes-Benz EQB 300 4matic?
NHTSA lists 156 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2023 Mercedes-Benz EQB 300 4matic from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2023 models
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.