2018 Mercedes-Benz GLS 550 Seat belts Problems
- Complaints
- 1about this part
- Share
- 17%of 6 total for the year
- Median mileage
- 32,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the seat belts of the 2018 Mercedes-Benz GLS 550, 17% of the 6 complaints for this model year. Where a mileage was given, the median is 32,000 miles.
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.
“Seatbelt had tightened and not released when my body moves. Brakes are not applied. Typically during driving I'm small enough to maneuver my hand down to release red seat belt button. I've had to stop my vehicle 5-10 times to release belt. I have 2 small kids 7/ 11 both are 60 pounds they are 4 feet tall and 4'6' 7 year old still uses booster I''ve checked belts to the best of my ability but I'm 110 lbs 5'2' and have no mechanical training or experience or certifications this has been noted to mercedes and the problem is never really discussed. …”
NHTSA complaint #11297292, filed 2020-01, 32,000 milesSeat belts: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 1 | 17% |
Other parts of the 2018 Mercedes-Benz GLS 550
2 complaintsBrakes
1 complaintsElectrical system
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2018 Mercedes-Benz GLS 550
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