2023 Mercedes-Benz GLS 450 4MATIC Fuel system Problems
- Complaints
- 2about this part
- Share
- 29%of 7 total for the year
- Median mileage
- 11,000miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 2 complaints about the fuel system of the 2023 Mercedes-Benz GLS 450 4MATIC, 29% of the 7 complaints for this model year. Where a mileage was given, the median is 11,000 miles. 2 recall campaigns on record are 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.
“Twice the vehicle has stalled while driving. I see that there is a recall on my model for a faulty fuel pump which causes this problem, but my dealer claims my vehicle is not part of the recall even though it is having the same issue.”
NHTSA complaint #11548136, filed 2023-10“The contact owns a 2023 Mercedes-Benz GLS450. The contact received notification of NHTSA Campaign Number: 23V880000 (Fuel System Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated while driving approximately 10 MPH and making a left turn, the vehicle stalled. The contact stated that an unknown warning was illuminated; however, when the vehicle was restarted, the warning light was off. …”
NHTSA complaint #11604201, filed 2024-07, 11,000 milesRelated recalls
- 23V880000Dec 21, 2023Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to…Covers: Mercedes-Benz GLS 450 4MATIC 2022–2023, AMG E53 2021–2023, GLE 350 2021–2023 +28 more
- 23V445000Jun 26, 2023Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to…Covers: Mercedes-Benz GLS 450 4MATIC 2022–2023, GLC 300 2021–2023, C300 2021–2023 +37 more
Related service bulletins
- 11036999Aug 15, 2026Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA…
- 11035490Jul 31, 2026This NCU replaces the prior NCU issued on May 15, 2025, and contains additional MY 2023 and MY 2024 vehicles which are highlighted below.
- 11019016May 30, 2025In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty…
- 11017203Apr 22, 2025Complaint A pulsating knocking noise (e.g. clattering) can be heard underneath the bench seat, particularly in the case of a full tank (1/1 fill level). Cause The vibrating air…
- 11014402Feb 21, 2025Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the…
- 11013179Jan 24, 2025Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 2 | 29% |
| 2022 | 2 | 12% |
Other parts of the 2023 Mercedes-Benz GLS 450 4MATIC
4 complaintsEngine
3 complaintsForward collision avoidance
2 complaintsElectrical system
1 complaintsLane departure
1 complaintsOther or unknown
1 complaintsWheels
1 complaints
← All problems reported for the 2023 Mercedes-Benz GLS 450 4MATIC
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