Skip to content
Fuel systemPart report

2018 Mercedes-Benz GLA 250 Fuel system Problems

Complaints
7about this part
Share
14%of 50 total for the year
Median mileage
20,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the fuel system of the 2018 Mercedes-Benz GLA 250, 14% of the 50 complaints for this model year. Where a mileage was given, the median is 20,000 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.

“I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that this issue appears to be similar to a known Mercedes-Benz issue affecting other model years and/or related Mercedes models. …”

NHTSA complaint #11745674, filed 2026-06

“There was a gas smell that would seep into the driving cabin from the engine. It was intermittent however when it did occur, the smell was strong enough to cause light headedness to the occupants of the vehicle. I took the car to my personal mechanic who told me that this was a common issue with these cars; however, Mercedes had not issued a recall. I my mechanic fix the issue since they had already diagnosed the problem. I did some research and discovered that there is class action law suit regarding this same issue. (Please see link below:). …”

NHTSA complaint #11645071, filed 2025-02

“The contact owns a 2018 Mercedes Benz GLA 250. The contact stated while the vehicle was parked, it was discovered that there was a fuel leakage. The hazard warning light was illuminated. The contact did research and discovered NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the VIN was not included. The vehicle was taken back to the residence. A dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 20,000.”

NHTSA complaint #11634864, filed 2025-01, 20,000 miles

“Crankcase Vent Valve needs replaced. Causes jumps in acceleration and pressure build up. Was a recall in other models. Took to a dealer today to confirm the check engine light and this was the cause.”

NHTSA complaint #11664595, filed 2025-06

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2023225%
2021317%
2020218%
2019310%
2018714%
2017310%
2016612%
20151213%

Other parts of the 2018 Mercedes-Benz GLA 250

Electrical system
10 complaints
Engine
10 complaints
Other or unknown
10 complaints
Air bags
6 complaints
Transmission and drivetrain
6 complaints
Wheels
5 complaints
Body and structure
4 complaints
Visibility (wipers, defrost, mirrors)
3 complaints
Back-over prevention (rear camera)
2 complaints
Engine cooling
2 complaints
Forward collision avoidance
2 complaints
Steering
2 complaints

← All problems reported for the 2018 Mercedes-Benz GLA 250

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