AI Damage2015 Mercedes-Benz E400 reliability: common problems
Owners of the 2015 Mercedes-Benz E400 filed 15 complaints with NHTSA, most often about air bags and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 15
- involving a crash
- 2
What fails most often
- 1 Air bags 53% of all complaints
- 2 Electrical system 20% of all complaints
- 3 Engine 7% of all complaints
- 4 Lane departure 7% of all complaints
- 5 Service brakes 7% of all complaints
- 6 Structure 7% of all complaints
- 7 Vehicle speed control 7% of all complaints
- Air bags: 8 complaints (53% of all), 1 of them with a crash reported by the owner.
- Electrical system: 3 complaints (20% of all), 1 of them with a crash reported by the owner.
- Engine: 1 complaints (7% of all).
- Lane departure: 1 complaints (7% of all).
- Service brakes: 1 complaints (7% of all).
Symptoms owners describe
How many of the 15 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) |
|---|---|---|---|
| Air bags | 8 | 1 | 0 |
| Electrical system | 3 | 1 | 0 |
| Engine | 1 | 0 | 0 |
| Lane departure | 1 | 0 | 0 |
| Service brakes | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Vehicle speed control | 1 | 1 | 0 |
| Other | 2 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Collision avoidance system (presafe plus) failed to warn (as advertised by mbusa) of an imminent rear end collision on an expressway. The system is supposed to provide an audible warning signal based on the rate of change of the closing distance between mb and a vehicle in front.
The air bags did not deploy. A police report was filed. The contact and the passenger sustained minor injuries, which required the contact to seek medical attention. The vehicle was towed to a tow lot and then to a dealer. The manufacturer was notified of the failure. The approximate failure mileage was 1,500.
The sub frame of this car is being replaced under a warranty extension due to severe rusting and separation creating an extremely unsafe driving condition. It was determined during inspection the rear brake lines were also corroded. This is also due to environmental exposure and substandard materials of construction.
Additionally, the driverâs and passengerâs side window buttons were peeling. The contact stated that the dashboard was bubbling. The vehicle had not been diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline.
Went on a 2000 miles road trip and my blind spot monitoring systems and then my turn signals stopped working.
Purchased new 2015 MB e400 in 12/2014 MB issued a bulliten in 12/15 (1 year later) indicating that the engines may experience a problem with the timing belt harness which may cause engine failure. We have the exact same issue now at 69k miles and MB refuses to acknowledge the issue claiming i need a new engine.
Tl* takata recall. The contact owns a 2015 mercedes-benz e400. The contact received notification of nhtsa campaign number: 19v010000 (air bags) however, the part to do the recall repair was unavailable.
Tl* takata recall. The contact owns a 2015 mercedes benz e400. The contact received notification of nhtsa campaign number: 19v010000 (air bags) however, the part to do the recall repair was unavailable. The vehicle was not taken to dealer to get diagnosed.
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 8,768 of 32,257 model years in the NHTSA data (top 27% most complained about).
On average one model year of the E400 has 23 complaints (4 years in the data). This year has 15, below average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Lane departure. Windshield camera: calibration after windshield replacement.
Other years of this model
Questions and answers
What are the most common problems with the 2015 Mercedes-Benz E400?
Owner complaints to NHTSA most often mention: air bags, electrical system, engine. Total complaints: 15. The most frequent symptoms in complaint texts: driver assists: adaptive cruise, lane keeping (13%), airbags did not deploy (7%), engine failure or replacement (7%).
How many service bulletins (TSB) were issued for the 2015 Mercedes-Benz E400?
NHTSA lists 0 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 2015 Mercedes-Benz E400 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 2015 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 2026-11-06.