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Fuel systemPart report

2019 Mercedes-Benz C300 Fuel system Problems

Complaints
12about this part
Share
17%of 69 total for the year
Median mileage
47,472miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the fuel system of the 2019 Mercedes-Benz C300, 17% of the 69 complaints for this model year. Where a mileage was given, the median is 47,472 miles. 1 of these say a crash was involved, according to the filers. 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.

“I was pulling out of a parking lot onto a highway with a posted limit of 55 MPH. As I pulled out onto the highway the gas pedal just stopped working. The car was on but it just wouldn't go anywhere. A vehicle coming from my left at a high rate of speed had to put on it's brakes in order not to strike the driver's side of my door. It came within 2 feet of my vehicle. I turned off the car and restarted it. When I restarted the vehicle I turned off the eco button and drove a couple of miles back to my home with no problems. Note....I have no idea if the eco button has anything to do with it. …”

NHTSA complaint #11395598, filed 2021-02, 28,000 miles

“Gas smell coming from engine area when car has been sitting overnight. Smell comes from driver's side of engine compartment. Gas smell does not happen when car is running. Smell fills up our 2-car garage causing concern when we start the car in the morning.”

NHTSA complaint #11611601, filed 2024-08

“On the afternoon of February 6, 2024, as I was turning into my driveway to park in front of the garage, my car unexpectedly accelerated despite my foot being on the brake pedal. Despite my attempts to brake, the pedal didn't respond, causing the car to collide with the garage door and subsequently damage storage shelves and containers inside. My mother and two brothers were passengers, returning from my mother's doctor appointment, and she became trapped inside due to the garage door collapsing onto the car. …”

NHTSA complaint #11574602, filed 2024-02

“The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving, the vehicle failed to exceed 15 MPH. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was scanned, and the mechanic retrieved fault codes indicating a failure with the high-pressure fuel pump. The contact was informed that the high-pressure fuel pump needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 34,945.”

NHTSA complaint #11624818, filed 2024-11, 34,945 miles

“The contact owns a 2019 Mercedes-Benz C300. The contact stated that while driving at various speeds, the vehicle suddenly lost motive power and decelerated. The accelerator pedal was depressed while attempting to accelerate. The contact stated that the fuel gauge failed to accurately display the level of fuel in the tank. The check engine warning light was intermittently illuminated. The vehicle was taken to the dealer, who diagnosed that the fuel level sensors had failed. The fuel tank and fuel pump needed to be replaced. The vehicle was not repaired. …”

NHTSA complaint #11688189, filed 2025-09, 157,000 miles

Related recalls

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
202315%
2022728%
2021321%
202039%
20191217%
20181010%
20173315%
20166623%
20157018%
201411%
201331%
2012124%
2011449%
2010266%
200951%
200820%

Other parts of the 2019 Mercedes-Benz C300

Engine
17 complaints
Electrical system
13 complaints
Other or unknown
10 complaints
Body and structure
7 complaints
Brakes
6 complaints
Transmission and drivetrain
6 complaints
Seat belts
5 complaints
Steering
5 complaints
Back-over prevention (rear camera)
3 complaints
Forward collision avoidance
3 complaints
Vehicle speed control
3 complaints
Air bags
1 complaints

← All problems reported for the 2019 Mercedes-Benz C300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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