Home · 2014 Mercedes-benz S-class Phev · Complaints

What 25 owners told NHTSA about the 2014 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 (25)Crash / fire / injury (5)Visibility & wipers (4)Brakes (3)Steering (3)Airbags (2)Fuel system (2)Seat belts (2)Suspension (2)Transmission & drivetrain (2)Body & structure (1)Driver assistance (1)

1 of 25 complaints match · Driver assistance · clear filters

Sep 1, 2021Driver assistanceLane Departure

Pre safe disabled then Blind spot disabled then cruise control disabled this occurs in heavy rain had the dealer check it told they could not duplicate the problem told them this is a dangerous problem in heavy weather as you do have blind spots in the s class and you do need the system to work.once the weather improves or the heavy rain subsides the system restores itself

NHTSA ODI 11431433

Working with the data? Download all 25 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 2014 Mercedes-benz S-class Phev verdict →