2021 Mercedes-Benz G 550 Fuel system Problems
- Complaints
- 2about this part
- Share
- 29%of 7 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 fuel system of the 2021 Mercedes-Benz G 550, 29% of the 7 complaints for this model year. 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.
“Driving 2021 Mercedes-Benz G-550 for approximately 8min. Preceding East on a 3 lane South Florida Highway no more than 40 mph. Gas tank 75% full with V-Power From Shell. (filled-3 days prior). Proceeded from the middle lane to the right lane in-order to make a sharp right handed turn onto up coming Shopping Center, that was two lights away. I had turned on my 21 MB G550 air conditioner to auto (off prior). While I was attempting to switch on my turn signal the car suddenly turns-off completely in mid-drive. …”
NHTSA complaint #11485579, filed 2022-09“The vehicle has fuel smell coming thru cabin vents. Opening the hood the vehicle also has strong fuel smell in engine bay. The hose supplying the fuel rails is cracked and damaged and does not have any heat sheild to prevent the hose from deteriorating.”
NHTSA complaint #11768693, filed 2026-10Related recalls
- 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 G 550 2021–2022, 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…
- 11018625May 15, 2025In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is…
- 11000624May 22, 2024The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly and/or a loss of power. Multiple Causes Remedy Please see the document…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 2 | 29% |
Other parts of the 2021 Mercedes-Benz G 550
4 complaintsEngine
3 complaintsAir bags
1 complaintsBrakes
1 complaintsForward collision avoidance
1 complaintsSeat belts
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 Mercedes-Benz G 550
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