2018 Mercedes-Benz GLS 450 Body and structure Problems
- Complaints
- 2about this part
- Share
- 14%of 14 total for the year
- Median mileage
- 22,689miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the body and structure of the 2018 Mercedes-Benz GLS 450, 14% of the 14 complaints for this model year. Where a mileage was given, the median is 22,689 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.
“Part of my panoramic sunroof spontaneously shattered while sitting at a stoplight. There were no cars or trees around at the time. Nothing touched the car when it happened.”
NHTSA complaint #11386871, filed 2021-01, 22,689 miles“While driving our 2018 Mercedes GLS 450 down Highway 80 just outside Sacramento, CA, the stationary glass panel of our panoramic sunroof spontaneously explpoded. There was no impact by any outside force, it just shattered with the sound similar to a gunshot. Fortunately I did not lose control of the vehicle, and thankfully the sun shade was closed otherwise broken glass would have showered down into my vehicle. this happened in early evening (around 7:00PM and the ambient temperature was 66 degrees outside, so this had nothing to do with temperature either. …”
NHTSA complaint #11457706, filed 2022-03Related service bulletins
- 11038217Sep 14, 2026Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise…
- 11036101Aug 6, 2026Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise…
- 11033050May 22, 2026Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline…
- 11013192Jan 24, 2025Complaint Fuel door may require several attempts to open. Please note that if the complaint "Fuel filler flap not opening" occurs, it is important to check the fuel filler flap…
- 11009122Oct 23, 2024Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump…
- 10205835Sep 16, 2021Model series 167 noise on B/C/D pillars.
Body and structure: other model years
Other parts of the 2018 Mercedes-Benz GLS 450
3 complaintsSuspension
3 complaintsElectrical system
2 complaintsEngine
2 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSeats
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 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