Home · 2020 Mercedes-benz S-class Phev · Complaints

What 7 owners told NHTSA about the 2020 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 (7)Speed control (2)Visibility & wipers (2)Electronic Stability Control (esc) (1)Engine (1)Fuel system (1)Steering (1)

1 of 7 complaints match · Electronic Stability Control (esc) · clear filters

Dec 12, 2019SteeringSpeed controlElectronic Stability Control (esc)

AUTOMATIC DRIVE SHUTS OFF WHEN YOU BRAKE. HOWEVER, IN A ROLLING STOP AND BRAKE, IT DOES NOT RESTART IN CERTAIN SITUATIONS WHEN YOU ACCELERATE OUT OF THE STOP. IT IS INCONSISTENT, BUT SERVICE TEAM AT LOCAL DEALER HAVE RECREATED THE SITUATION. THE CAR IS DESIGNED TO AUTO RESTART AND THE FUNCTION CANNOT BE DISABLED.

NHTSA ODI 11288650

Working with the data? Download all 7 complaints as CSV · fetched from NHTSA July 21, 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 2020 Mercedes-benz S-class Phev verdict →