2016 Mercedes-Benz GLC 300: gas smell in the cabin

Filed Oct 17, 2025 · Fuel system · 60,814 miles · DE

The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that while receiving routine maintenance, the mechanic noticed a fuel odor coming from the vehicle. The mechanic determined that the fuel injectors had failed and that the fuel rail needed to be replaced. The mechanic provided the contact with information related to the federal safety agency Campaign Number: 21V961000 (Fuel System, Gasoline); for the fuel rails and fuel injectors. The mechanic referred the contact to the dealer for assistance. The dealer was informed of the failure and confirmed that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed that the VIN was not included in the recall. The manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 60,814.

Filed Sep 20, 2025 · Fuel system · CA

Mercedes-Benz USA (MBUSA) To whom It May Concern, Complaint through your dealer, regional MB and state AG. Going through MBUSA is a waste of time. You would be better off going to Sears and buying a shiny new hammer and banging your head every hour on the hour. A little over a year ago, I Purchase a previously owned 2016 GLC300 from a local DGDG dealership in San Jose CA. for the past few month, I started experiencing a heavy fuel odor generated from the fuel rail and fuel injectors. I initiated a leak detection to verify the above-mentioned defect. I became aware the Mercedes Benz has a major issue with the fuel rail and fuel injectors that caused a safety & emission recall campaign 2022030003 that is launched to replace the fuel rail and fuel injectors on 139 Model Year 2016-2020 that included my car GLC-class vehicle. To my surprise my car VIN number was not listed and flagged in this campaign. According to the campaign issue, a leak may develop between the fuel line and the fuel injectors due to trapped debris from the production process, which could affect the safety and emissions of the vehicle. according to the documents of the campaign, trapped debris might damage the seal between the fuel rail and fuel injectors, which over the life of the vehicle, might result in a fuel leak into the engine compartment. I informed Mercedes Bens that my vehicle fuel rail line and fuel injectors have shown to have a safety manufacture failure. Leaking fuel from this area might contact hot parts of the engine and therefore the risk of fire cannot be ruled out. It seems that the fuel pressure deviation has exceeded the thresholds because the fuel odor is perceptible to me. I had an appointment with Mercedes Benz of Stevens Creek, and they established that my vehicle VIN number was not affected by the recall even though the defects exist on my vehicle. I reached out to Mercedes Benz USA, LLC and filed case # [XXX] but they elected not to take responsibility to repair my ca INFORMATION REDACTED PURSUANT TO THE FREEDOM OF I

Filed Nov 24, 2023 · NY

I own a 2016 Mercedes Benz GLC 300 and I’ve noticed that a strong gas smell when I start the car during cold weather. You notice the smell outside and inside the cabin as well as it comes in through the vents.

Filed Oct 23, 2023 · Fuel system · OH

I have noticed extreme gas odors in the cabin of my car, the gas odor is so horrific that even when I exit the car either outside or in my garage the odor remains. My car is housed in my garage and I'm very concerned regarding these fumes which fills up my garage because my home is attached. I researched on a web site that there has been complaints and consequently a recall ( 21V961000) ON 12-12-2021 FOR GLC 300,2016, But my vehicle did not receive a recall notice. I am concerned regarding possible fire or illness related to fumes being inhaled.

Filed Jan 30, 2023 · Brakes, Fuel system · IA

Raw fuel smell when vehicle is at idle. Breaks are very loud at low temperatures. Very squeaky like metal on metal yet the brakes are like new from Mercedes dealership.

Filed Jan 17, 2023 · Fuel system · 15,000 miles · LA

The contact owns a 2016 Mercedes-Benz GLC300. The contact stated while driving at various speeds, there was an abnormal fuel odor inside the vehicle. The dealer was notified of the failure and acknowledged that the failure was a known issue with similar-model vehicles. The contact was informed that the fuel line needed to be replaced; however, the dealer could not schedule an immediate appointment. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 15,000. The contact stated that the fuel line was replaced under the vehicle's extended warranty.

Filed May 6, 2022 · LA

Crank case vent valve went out. Then turbo went out after that. Car smells of gasoline inside cabin.

Filed Jun 18, 2021 · Brakes, Fuel system · CA

Often after starting the car, inside the car there is a gas smell that we have to closed the vents as it becomes unhealthy until the smell goes away, it last up to 10 minutes. I have taking the car to my mechanic who specializes on Mercedes and could not find any leaks and/or anything wrong. My other issue is that during the raining season when I put my foot on the breaks it makes this loud sound like an airplane landing that I have to release and press and release and press so the car will slow down. My mechanic have done multiple inspections and finds nothing wrong. My third issue is the suspension, driving on freeways at speeds over 55 mph I feel a lot of shaking between front wheels and I can feel every single bump. Again, my mechanic has found nothing wrong that even checked for recalls and has told me that there are no recalls for this vehicle. Obviously there has to be a recall issue and the one more concerning is the gas smell inside the car at start up.

Filed Jan 17, 2021 · Fuel system · MA

Fuel smell entering cabin after start up, fuel line on drivers side near steering column leaking, googled problem and seems to be common occurrence with glc300, and mercedes c class but no recall, this is the same problem as the mercedes metris has but there was an recall issued for that model

Filed Feb 18, 2020 · Fuel system · 28,000 miles · NM

When I start my car there is strong gas odor in the cabin for the first 3-4 hours of driving. Also there is a moldy smell in the warmer months as well

Filed Oct 16, 2019 · Fuel system · 10,000 miles · FL

Tl* the contact owns a 2016 mercedes-benz glc300. The contact noticed a strong fuel odor inside and outside the vehicle. The failure occurred periodically. The vehicle was taken to zt motors of fort walton beach (1000 n beal pkwy nw, fort walton beach, fl 32547, (850) 863-8372) to be diagnosed, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 10,000.

Filed Nov 13, 2018 · Fuel system · TX

On cold start (7am, between 60 and 70f degrees), there's a strong gas smell on both the cabin and outside the vehicle. No check engine light is on or any other indicator of a failure. There's no visible leaks on the underhood or my driveway. Really scared to take my kids to school unless mb solve this problem. Vehicle still under warranty, mb dealership shouldn't charge for the inspection. Taking vehicle to el paso tx dealership. Will see what happens.