Home · 2019 Mercedes-benz S-class Phev · Complaints

What 16 owners told NHTSA about the 2019 Mercedes-benz S-class Phev

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (16)Crash / fire / injury (2)Brakes (3)Engine (3)Steering (3)Fuel system (2)Seat belts (2)Transmission & drivetrain (2)Airbags (1)Electrical system (1)Suspension (1)

2 of 16 complaints match · Fuel system · clear filters

Feb 5, 2024Fuel system

The contact owns a 2019 Mercedes-Benz AMG S63. The contact stated that while his wife was driving at an undisclosed speed, there was an abnormally strong fuel odor detected. Upon inspection, the contact discovered that there was fuel leaking from the fuel rail. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The contact related the failure to NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the VIN was not included in the recall. The failure mileage was approximately 67,000.

NHTSA ODI 11569929

Aug 9, 2021Fuel systemEngine

The contact owns a 2019 Mercedes-Benz S560. The contact stated that while driving at various speeds, the vehicle would jerk upon depression of the accelerator pedal as the battery auxiliary warning message would appear on instrument panel. The contact had initially taken the vehicle to a dealer where they stated that water in the fuel tank had caused the failure; the fuel was drained and replaced with the gasoline at the dealer. The failure persisted and the vehicle was taken back to the dealer. The contact was informed by the dealer that she had compromised the vehicle and that she had to pay for any future repairs to the vehicle, which the contact objected to. After the third failure, the contact was informed that the fuel in her vehicle would be sent to the manufacturer to be tested. The manufacturer was also notified of the failure and was assured that they would test both the fuel and the vehicle however, the contact had yet to receive an update about the vehicle. The vehicle had yet to be repaired and remained in the possession of the dealer. The failure mileage was approximately 15,000. THE CONSUMER STATED THE VEHICLE EXPERIENCED SUDDEN VIOLENT SHAKING, AND SHUT DOWN, DECREASE FROM 60 TO 0 MPH.

NHTSA ODI 11428409

Working with the data? Download all 16 complaints as CSV · fetched from NHTSA July 20, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2019 Mercedes-benz S-class Phev verdict →