Vehicle speed controlPart report
2020 Mercedes-Benz GLS 450 Vehicle speed control Problems
- Complaints
- 1about this part
- Share
- 3%of 36 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the vehicle speed control of the 2020 Mercedes-Benz GLS 450, 3% of the 36 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Vehicle speed control: other model years
Other parts of the 2020 Mercedes-Benz GLS 450
Electrical system
18 complaintsEngine
9 complaintsForward collision avoidance
7 complaintsFuel system
7 complaintsOther or unknown
4 complaintsTransmission and drivetrain
4 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsBrakes
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsSeats
1 complaints
18 complaintsEngine
9 complaintsForward collision avoidance
7 complaintsFuel system
7 complaintsOther or unknown
4 complaintsTransmission and drivetrain
4 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsBrakes
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsSeats
1 complaints
← All problems reported for the 2020 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