Home · 2012 Mercedes-benz S-class Phev · Complaints

What 14 owners told NHTSA about the 2012 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 (14)Crash / fire / injury (2)Engine (7)Fuel system (5)Transmission & drivetrain (3)Electrical system (2)Speed control (2)Electronic Stability Control (esc) (1)Steering (1)

1 of 14 complaints match · Engine · crash/fire/injury only · clear filters

Apr 23, 2021SteeringEngineFire

VEHICLE CUT ON FIRE WHILE SITTING LUCKY OUTSIDE, THE CORNER OF ENGINE PASSENGER SIDE BELLOW THE HEADLIGHT STORES THE SUSPENSION AIR PUMP AND ELECTRIC HYDRAULIC STEERING PUMP.. BASE ON MY INSPECTION THE EHPS HEATED AND SET ON FIRE.SOMEONE SAW THE CAR ON FIRE AND CALLED FIRE DEPT.. CAR WAS LOCK AND STORE AFTER HOURS

NHTSA ODI 11413503

Working with the data? Download all 14 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 2012 Mercedes-benz S-class Phev verdict →