2021 Mercedes-Benz GLS 450 Seats Problems
- Complaints
- 2about this part
- Share
- 6%of 31 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the seats of the 2021 Mercedes-Benz GLS 450, 6% of the 31 complaints for this model year. 2 a fire, according to the filers. 1 recall campaign on record is filed under a similar system.
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.
“1. Unknown, smoke started coming from under the passenger side seat, car is a complete loss. 2. Smoke damaged my lungs, there was a large amount of exploding glass, and it could have led to a structure fire. 3. Not applicable 4. In process, but it was recalled for this issue 5. No”
NHTSA complaint #11610699, filed 2024-08Related recalls
- 22V732000Sep 30, 2022Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 AMG GLS63, 2020-2022 GLS450 and GLS580 vehicles. Due to a manufacturing error, the locks on the…Covers: Mercedes-Benz GLS 450 2020–2021, GLS 580 4MATIC 2020, 2022, AMG GLS63 2021 +2 more
Related service bulletins
- 11024276Oct 10, 2025Complaint The "Easy entry and exit feature" function deactivates itself after a brief period. (see attachment). Cause The cause is currently being investigated. Remedy Update the…
- 11003092Jun 27, 2024Complaint • Seats cannot be adjusted • Seats cannot be folded • Seats in the 2nd seat row cannot be locked or unlocked • Normalization cannot be performed in its entirety using…
Seats: other model years
Other parts of the 2021 Mercedes-Benz GLS 450
14 complaintsOther or unknown
8 complaintsEngine
3 complaintsLane departure
3 complaintsForward collision avoidance
2 complaintsFuel system
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 Mercedes-Benz GLS 450
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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