Sep 28, 2017Seat belts
2017 MERCEDES-BENZ C300 COUPE. SEATBELT "PRE-TENSIONER", PART OF MERCEDES' PRE-SAFE FEATURE THAT TIGHTENS THE SEATBELT TO REMOVE SLACK WHEN YOU CLICK THE SEATBELT IN, DOESN'T ALWAYS WORK.
NHTSA ODI 11030383
Home · 2017 Mercedes-benz C-class Phev · Complaints
What 251 owners told NHTSA about the 2017 Mercedes-benz C-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 (251)Crash / fire / injury (19)Engine (82)Electrical system (35)Fuel system (35)Body & structure (26)Seat belts (26)Airbags (18)Steering (15)Transmission & drivetrain (15)Visibility & wipers (11)Wheels (6)
26 of 251 complaints match · Seat belts · clear filters · page 2 of 2
Working with the data? Download all 251 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 2017 Mercedes-benz C-class Phev verdict →