2021 Mercedes-Benz GLA 250 Fuel system Problems
- Complaints
- 3about this part
- Share
- 17%of 18 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the fuel system of the 2021 Mercedes-Benz GLA 250, 17% of the 18 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.
“I purchased this car approx 3 months after real issues began. My car would have issues idling where it would sometimes turn off at stop lights and require multiple reignition attempts before proceeding. This would also happen when the auto-start feature (anti-idle/gas saving) was engaged (which is the default in the system) and this posed major safety concerns. The unstable idling of the car would result in an initial acceleration after being stopped, shortly followed by the engine dying. …”
NHTSA complaint #11544109, filed 2023-09“When coming to a full stop at a red light (or any need to idle at a stop), the car frequently begins to hesitate as if it is about to cut off. I assume it has something to do with the ‘fuel saving feature’ which comes on in the form of a green symbol in the lower left of the odometer display (the engine is still running the AC) . …”
NHTSA complaint #11677929, filed 2025-08“The Gas Door did not open in order to pump gasoline. There is no mechanical device for the driver, passenger, owner of the vehicle to manually open the gas door from the inside. There was no electronic warning within the Mercedes Benz to alert driver about malfunction of gas door not working. Driver took vehicle to local Firestone mechanic who said the gas door actuator needed to be replaced. …”
NHTSA complaint #11713295, filed 2026-01Related 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…
- 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…
- 10253715Apr 23, 2024Check engine light active and FC P146364 Temp. and pressure sensor B4/7 is stored in Engine control unit and Fuel pump control unit. Software parameter in Fuel pump control unit…
- 10253706Apr 12, 2024IMPORTANT EMISSION EXTENDED WARRANTY INFORMATION In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our…
Fuel system: other model years
Other parts of the 2021 Mercedes-Benz GLA 250
5 complaintsElectrical system
4 complaintsOther or unknown
4 complaintsBack-over prevention (rear camera)
2 complaintsLatches, locks and linkages
2 complaintsTires
2 complaintsTransmission and drivetrain
2 complaintsBrakes
1 complaintsEngine cooling
1 complaintsForward collision avoidance
1 complaintsBody and structure
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 Mercedes-Benz GLA 250
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