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Fuel systemPart report

2010 Mercedes-Benz GLK350 Fuel system Problems

Complaints
30about this part
Share
12%of 241 total for the year
Median mileage
88,287miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 30 complaints about the fuel system of the 2010 Mercedes-Benz GLK350, 12% of the 241 complaints for this model year. Where a mileage was given, the median is 88,287 miles. 1 of these say a crash was involved and 1 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Very strong smelling fuel odor after everytime I fill it up with fuel. Yesterday 06/20/16 it starting leaking fuel. This has been going on since I bought it in november 2015. Car could be stationary or in motion and the smell of fuel is always there. Smells the worst when I fill it up. The actual leak prompted me to file this complaint.”

NHTSA complaint #10875218, filed 2016-06, 71,000 miles

“Every time I fill up my mercedes glk 350 with fuel there is a very strong odor of fuel in my garage after I park the car. There is no visible leak of fuel on the garage floor or notification of any issue on the dashboard. The strong fuel order goes away after driving the car and burning off a gallon or so. This is a serious safety and health issue that started few weeks ago and is of a big concern to me and to my family.”

NHTSA complaint #11292018, filed 2019-12, 81,000 miles

“Excessive fuel smell, turns out it's the fuel tank, was informed plastic fuel tank seam is splitting and is now a fire/safety issue. Informed that mercedes is aware of the problem and replaced many during warranty period, but now since my warranty is over this safety repair will cost me in excess of 3,000.00. This is a fire hazard and big time safety issue that the NHTSA needs to look into.”

NHTSA complaint #10925666, filed 2016-11, 84,000 miles

“Fuel leaking/dripping after filling up with gas. The smell of gas prompted me to look under the vehicle and it was then that I saw a small pool of gas on the driveway. The leaking stopped when the tank was less than full and recurred when filling the gas tank. No damage yet, going to the dealer for their assesment.”

NHTSA complaint #10726310, filed 2015-06, 83,000 miles

“On 4/24/16, a toyota rear ended me and pushed me into the vehicle in front of me. The damage would have been repairable until my car caught on fire. It looked like it started in the inside above the gas tank area, but the man working at the impound lot the next day said it looked electrical. Either way, the impact should not cause a mercedes to catch on fire. I was on a city street stopped at a stoplight.”

NHTSA complaint #10862316, filed 2016-04, 101,050 miles

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
201565%
201488%
201386%
2012138%
20112116%
20103012%

Other parts of the 2010 Mercedes-Benz GLK350

Air bags
149 complaints
Suspension
14 complaints
Other or unknown
13 complaints
Body and structure
11 complaints
Vehicle speed control
9 complaints
Brakes
8 complaints
Electrical system
8 complaints
Steering
8 complaints
Exterior lighting
5 complaints
Engine
4 complaints
Transmission and drivetrain
4 complaints
Electronic stability control
3 complaints

← All problems reported for the 2010 Mercedes-Benz GLK350

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