2019 Mercedes-Benz GLS 450 Vehicle speed control Problems
- Complaints
- 1about this part
- Share
- 4%of 25 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 2019 Mercedes-Benz GLS 450, 4% of the 25 complaints for this model year.
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.
“Mercedes benz has grossly mis-represented the active brake system feature. The owners manual leaves out a key element, which is that the drivers foot needs to be off the pedal for the feature to activate. I.e. The feature will only work when the driver is not pressing the accelerator. This is a critical feature and one they shouldn't omit. I expect the the auto brake to come into effect when I'm approaching a car in front of me at a a pace that will lead to a collision. But it doesn't work that way. …”
NHTSA complaint #11300899, filed 2020-01Vehicle speed control: other model years
Other parts of the 2019 Mercedes-Benz GLS 450
7 complaintsElectrical system
4 complaintsEngine
3 complaintsEngine cooling
3 complaintsTransmission and drivetrain
3 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsBrakes
2 complaintsBody and structure
2 complaintsSuspension
2 complaintsFuel system
1 complaintsSteering
1 complaints
← All problems reported for the 2019 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