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Seat beltsPart report

2015 Mercedes-Benz S550 Seat belts Problems

Complaints
7about this part
Share
17%of 41 total for the year
Median mileage
43,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the seat belts of the 2015 Mercedes-Benz S550, 17% of the 41 complaints for this model year. Where a mileage was given, the median is 43,000 miles. 2 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My wife installed a baby car seat in rear passenger seat. When I unbuckle to clean up the seat, seat belts were jammed and locked. I took it to the dealer and they quoted over 1200$ just for seat belt replacement.”

NHTSA complaint #11343760, filed 2020-08

“My wife was driving my 2015 mercedes benz s-550 on the 14th of august, 2019. She had stopped at a red light and when it turned green crossed a 6 lane intersection. She was moving through the intersection when she was hit by a vw passet who ran the red light at an estimated 40 to 50 MPH. The passet hit dead center on the b pillar between the doors on the passenger side of the mercedes. All air curtains and a rear seat air bag deployed on the unoccupied passenger side of the car, none deployed to protect driver's head abeam the b pillar.. …”

NHTSA complaint #11298177, filed 2020-01

“The contact owns a 2015 Mercedes-Benz S550. The contact stated that the rear driver's side seat belt was inoperable. The contact stated that the seat belt failed to retract as designed. The vehicle was taken to the dealer where it was diagnosed with a failed seat belt retractor. The contact was informed that the seat belt retractor needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 75,000.”

NHTSA complaint #11591722, filed 2024-05, 75,000 miles

“The contact owns a 2015 mercedes benz S550. While driving at 40 MPH, the contact was involved in a front end collision with another vehicle. The air bags partially deployed and the seat belt did not tighten. A police report was filed. The contact sustained bulging disc and severe nerve damage to the left hand and legs. The contact was recommended to have surgery for the nerve damage. The contact's mother suffered bruising and a concussion. Both occupants received medical attention. The vehicle was towed to a body shop and was deemed repairable. It was unknown if a dealer was contacted. …”

NHTSA complaint #11075716, filed 2018-03, 11,000 miles

Seat belts: other model years

YearComplaintsShare of year
201716%
2016213%
2015717%
201428%
200712%

Other parts of the 2015 Mercedes-Benz S550

Other or unknown
7 complaints
Electrical system
5 complaints
Body and structure
5 complaints
Wheels
5 complaints
Air bags
4 complaints
Steering
4 complaints
Visibility (wipers, defrost, mirrors)
4 complaints
Brakes
3 complaints
Engine
3 complaints
Fuel system
3 complaints
Tires
2 complaints
Forward collision avoidance
1 complaints

← All problems reported for the 2015 Mercedes-Benz S550

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology