2012 Mercedes-Benz GL450 Fuel system Problems
- Complaints
- 2about this part
- Share
- 4%of 47 total for the year
- Median mileage
- 56,984miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2012 Mercedes-Benz GL450, 4% of the 47 complaints for this model year. Where a mileage was given, the median is 56,984 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.
“While driving at highway speed in the left lane of a divided highway, the vehicle suddenly and without notice lost engine power and power steering. The weather condition was light rain and the road was wet. I was able to move over to the shoulder of the highway and restart the engine but it died within two to three seconds. I then restarted the engine several more times and was able to maintain a running engine after about 5 restart cycles. …”
NHTSA complaint #10763948, filed 2015-09, 38,967 miles“There is a strong odor of gas coming from the back drivers side wheel when parked and when driving. We haven't found any gas on the floor of our garage but definitely a strong gas smell and fumes. We have tried to fill the tank 1/2 way but it doesn't seem to help the smell/fumes are throughout our entire house including the 3rd floor when the car is parked in the garage. I am worried about it exploding or catching on fire. I have read online of other mercedes leaking gas and wonder if this is happening to anyone else who owns a gl 450?”
NHTSA complaint #11149871, filed 2018-11, 75,000 milesRelated service bulletins
- 10167487Mar 21, 2014Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2…
Fuel system: other model years
Other parts of the 2012 Mercedes-Benz GL450
22 complaintsBrakes
8 complaintsSuspension
7 complaintsTransmission and drivetrain
5 complaintsSeat belts
3 complaintsElectrical system
2 complaintsElectronic stability control
2 complaintsOther or unknown
2 complaintsSteering
1 complaintsTires
1 complaints
← All problems reported for the 2012 Mercedes-Benz GL450
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