Gasoline Fuel System Problems of Mercedes Benz C300

Mercedes Benz C300 owners have reported 22 problems related to gasoline fuel system (under the gasoline fuel system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercedes Benz C300 based on all problems reported for the C300.

1 Gasoline Fuel System problem of the 2012 Mercedes Benz C300

Failure Date: 07/28/2025

The contact owns a 2012 mercedes-benz C300. The contact stated the fuel tank was emitting a fuel odor. The contact stated that the fuel odor was extremely strong and could be smelled inside the residence while the vehicle was parked in the garage. There were no warning lights illuminated. The vehicle was taken to a certified mechanic, who diagnosed that the leak was coming from the top of the fuel tank; however, the mechanic was unable to specify the cause. The vehicle was towed to the dealer, but the vehicle was not diagnosed. The vehicle was not repaired. The contact became aware of NHTSA campaign number: 12v557000 ( fuel system, gasoline) online; however, the VIN was not included. The manufacturer was informed of the failure and informed the contact that the VIN was not under recall. The failure mileage was approximately 98,000.

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2 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 03/01/2025

The contact owns a 2016 mercedes-benz C300. The contact stated that there was a gasoline odor inside and outside the vehicle on several occasions, while driving at various speeds and while parked. The contact stated that the vehicle failed to accelerate as needed. The contact stated that there was no warning light illuminated, the fuel consumption increased, with the fuel gauge lowered more quickly. The vehicle was taken to an independent mechanic who saw gasoline pooling near the fuel injector, and the coils were leaking between the fuel injector and the fuel rail, and the fuel rail or possibly the injector seals needed to be replaced. The vehicle was not repaired. The contact believed that the vehicle should be included in a recall. The manufacturer was notified of the failure. The failure mileage was approximately 98,000.

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3 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 02/15/2025

The contact owns a 2016 mercedes-benz C300. The contact stated that while driving at an undisclosed speed, the contact smelled a gasoline odor in the interior of the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who determined that the fuel hose downstream of the fuel pump was leaking. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA campaign number: 18v837000 (fuel system, gasoline); but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

4 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 12/24/2024

The contact owns a 2016 mercedes-benz C300. The contact stated that there was an abnormal fuel odor inside the vehicle when the heater was activated. The contact stated that the cabin air filter was replaced; however, the odor was lingering inside of the vehicle. There was no warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed and the contact was informed that there was gas leaking onto the transmission and that the fuel rail, fuel hose, and fuel injectors needed to be replaced. The contact referenced NHTSA campaign number: 21v961000 (fuel system, gasoline); as a possible cause for the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 53,000.

5 Gasoline Fuel System problem of the 2017 Mercedes Benz C300

Failure Date: 05/08/2024

The contact owns a 2017 mercedes-benz C300. The contact stated while driving at an undisclosed speed, the check engine warning light was illuminated but then disappeared. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was diagnosed with a failed actuator. The contact was informed that an actuator needed to be replaced. The vehicle was not repaired. The contact was informed of NHTSA campaign number: 21v961000 (fuel system, gasoline) however, the VIN was not associated with the recall. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA hotline. The failure mileage was approximately 100,000.

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6 Gasoline Fuel System problem of the 2019 Mercedes Benz C300

Failure Date: 02/29/2024

The contact owns a 2019 mercedes-benz C300. The contact stated while driving 45 mph, the contact noticed smoke coming from the front passenger's side wheel well. The vehicle was driven to the residence. Upon arriving at the residence, the contact raised the hood and became that clear liquid was burning on the engine. The contact stated that after completing an investigation, it was determined that the clear liquid was the result of a leaking fuel line. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 76,000.

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7 Gasoline Fuel System problem of the 2019 Mercedes Benz C300

Failure Date: 11/26/2023

The contact owns a 2019 mercedes-benz C300. The contact stated that the vehicle would shut off soon after being cold started with several unknown warning lights illuminated. The vehicle was towed to the dealer where a diagnostic test was performed. The diagnostic test showed that the fuel pump was defective and needed to be replaced. The contact drove the vehicle for a few days after the diagnostic test but experienced the failure a second time. The vehicle was then towed to an independent mechanic for a second opinion where the contact was given the same diagnostic result; however, the contact was informed that the vehicle was included in NHTSA campaign number: 21v961000 (fuel system, gasoline). The contact went back to the dealer but was informed that the vehicle was not included in the recall. The manufacturer was notified of the failure and was referred to the NHTSA hotline for assistance. The vehicle was not repaired. The failure mileage was 25,751.

8 Gasoline Fuel System problem of the 2022 Mercedes Benz C300

Failure Date: 08/31/2023

The contact owns a 2022 mercedes-benz C300. The contact received notification of NHTSA campaign number: 23v445000 (fuel system, gasoline) however, the part to do the recall repair was not yet available. The local dealer was contacted, and the contact was informed that the part for the recall repair was not yet available. The contact stated that the manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

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9 Gasoline Fuel System problem of the 2015 Mercedes Benz C300

Failure Date: 08/28/2023

The contact owns a 2015 mercedes-benz C300. The contact stated that after refueling, the contact smelled a gasoline odor throughout the interior of the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the canister purge valve. The vehicle was not repaired. After investigating the failure, the contact related it to NHTSA campaign number: 15v138000 (fuel system, gasoline), but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 10,000.

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10 Gasoline Fuel System problem of the 2022 Mercedes Benz C300

Failure Date: 08/25/2023

The contact's daughter owns a 2022 mercedes-benz C300. The contact received notification of NHTSA campaign number: 23v445000 (fuel system, gasoline) however, the part to do the recall repair was unavailable. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

11 Gasoline Fuel System problem of the 2011 Mercedes Benz C300

Failure Date: 06/30/2023

The contact owns a 2011 mercedes-benz 300. The contact stated after adding more than 3 quarts of fuel to the vehicle, there was a strong fuel odor inside the vehicle. The contact stated that the failure had been recurring and was making him unwell. The vehicle was taken to the dealer, where it was diagnosed that the failure was related to NHTSA campaign number: 12v557000 (fuel system, gasoline). The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was unknown.

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12 Gasoline Fuel System problem of the 2012 Mercedes Benz C300

Failure Date: 04/16/2023

The contact owns a 2012 mercedes-benz C300. The contact stated while driving at various speeds, extra brake travel time was needed to stop the vehicle. There was no warning light illuminated. The contact had taken the vehicle to an independent mechanic where the vehicle was purchased, and he was informed that the failure was caused by the new brake pads placed on the vehicle. The contact eventually took the vehicle to a dealer and was informed that the fuel tank and brake lines were corroded; and the contact was provided an estimate for the repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 96,000.

13 Gasoline Fuel System problem of the 2012 Mercedes Benz C300

Failure Date: 01/06/2023

The contact owns a 2012 mercedes-benz C300. The contact stated that while parked, the vehicle failed to start. The vehicle was towed to the dealer where it was diagnosed as water intrusion. The vehicle was not repaired. The contact referenced the failure to NHTSA campaign number: 22v955000 (fuel system, gasoline, fuel system, diesel). The manufacturer was made aware of the failure. The failure mileage was approximately 109,000.

14 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 11/14/2022

The contact called on behalf of her daughter who owned a 2016 mercedes-benz C300. The contact stated the vehicle had an abnormally strong fuel odor coming from the inside and outside of the vehicle. There were no warning lights illuminated. The contact had not taken the vehicle to the dealer. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 72,000.

15 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 08/21/2022

The contact owns a 2016 mercedes-benz C300. The contact stated after starting the vehicle with the heater running, there was an abnormally strong gasoline odor coming from the vehicle. The vehicle was not diagnosed nor repaired. The manufacturer was not contacted or informed of the failure. The failure mileage was 90,000.

16 Gasoline Fuel System problem of the 2011 Mercedes Benz C300

Failure Date: 08/21/2022

The contact's client owns a 2011 Mercedes Benz C300. The contact stated that the vehicle's owner had complained of a raw fuel smell that would emit from the vehicle without warning. Upon inspection of the vehicle, the contact discovered that fuel would spray out of the fuel pump and onto the exhaust. The contact was able to replace the fuel pump and correct the failure. Upon investigation, the contact discovered NHTSA campaign number: 12v557000 (fuel system, gasoline) which he linked to the failure. The dealer nor the manufacturer had yet to be notified of the failure. The vehicle had been repaired. The failure mileage was approximately 142,000.

17 Gasoline Fuel System problem of the 2011 Mercedes Benz C300

Failure Date: 08/24/2021

The contact owns a 2011 mercedes-benz C300. The contact stated that after refueling the vehicle and driving a short distance, there was a burning odor coming from inside and outside the vehicle. The traction control warning light was illuminated. The contact had taken the vehicle to a certified mechanic who replaced the fuel cabinet. The burning odor persisted. The contact was informed that the failure was related to NHTSA campaign number: 12v557000 (fuel system, gasoline) however, the VIN was not included. The manufacturer was made aware of the failure. The approximate failure mileage 12,800.

18 Gasoline Fuel System problem of the 2015 Mercedes Benz C300

Failure Date: 08/01/2021

The contact owns a 2015 mercedes-benz C300. The contact stated that a strong fuel odor could be smelled from both inside and outside the vehicle. The vehicle had to be serviced for the failure; however, upon inspection, the contact believed that the source of the odor was from the engine fuel lines. The dealer was notified of the failure and informed him that there were no recalls on the vehicle. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 102,000.

19 Gasoline Fuel System problem of the 2011 Mercedes Benz C300

Failure Date: 07/31/2021

The contact owns a 2011 mercedes-benz C300. The contact stated he started to smell an abnormal fuel odor and noticed a spot where fuel had leaked onto the garage floor. The contact stated that the check engine warning light was illuminated. The contact stated that while inspecting the vehicle, he noticed both fuel tank covers were cracked. The contact drove another vehicle to the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. Upon investigation, the contact associated the failure with NHTSA campaign number: 12v557000 (fuel system, gasoline) however, the VIN was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 82,000.

20 Gasoline Fuel System problem of the 2009 Mercedes Benz C300

Failure Date: 05/16/2021

The contact owns a 2009 mercedes-benz C300. The contact stated upon starting the vehicle, she became aware that the vehicle was leaking fuel. There was no warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the fuel tank needed to be replaced. The vehicle was not repaired. The contact was related the failure to an unknown recall. The manufacturer was not informed of the failure. The failure mileage was approximately 120,000.

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21 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 12/07/2020

Tl the contact owns a 2016 Mercedes Benz C300. The contact stated that when she started the vehicle, there was an odor of fuel inside the cabin. The vehicle was taken to an independent mechanic, and the technician informed the contact that there was an abnormal odor of fuel when he lifted the hood and advised the contact to take the vehicle to a mercedes dealer because he was not certified to service the vehicle. The contact called atlanta classic cars (1705 boggs rd NW, duluth, GA 30096) and informed them of the failure and scheduled an appointment. The manufacturer was not made aware of the failure. The failure mileage was approximately 86,000. ## VIN passed ## mercedes-benz C300 2016 ##.

22 Gasoline Fuel System problem of the 2016 Mercedes Benz C300

Failure Date: 10/25/2017

The contact owns a 2016 mercedes-benz C300. The contact stated that whenever the fuel tank was full, there was a fuel-burning odor coming from the engine and entered the vehicle through the a/c vents. In addition, when the vehicle was cold, the odor was entering the vehicle through the a/c vents. No warning lights were illuminated. The vehicle was taken to a collision center specializing in foreign vehicles, where it was diagnosed that the fuel rail and injectors had a fuel leak. The vehicle was not repaired. The contact stated that the failure persisted. Upon further investigation, the contact related the failure to NHTSA campaign number: 21v961000 (fuel system, gasoline). However, the VIN was not included. The contact stated that his mother owned the vehicle in the past and gave the vehicle to the contact two years ago. The contact's mother remembered receiving a recall letter; however, the contact's mother was unsure if the vehicle had been repaired in the past. The manufacturer was made aware of the failure and referred the contact to the nhsta hotline for assistance. The failure mileage was approximately 60,000.


Other Common Gasoline Fuel System related problems of Mercedes Benz C300


C300 Service Bulletins
C300 Safety Recalls
C300 Defect Investigations