2016 Mercedes-Benz C300: engine stalls while driving

Filed Oct 27, 2026 · Engine, Fuel system · OH

Hi, in the Fall of 2025 my 2016 Mercedes Benz C300 4 Matic, started giving off smelly fumes while my car was idling/ warming up. I registered a complaint with the Corporate Mercedes Benz Office USA, LLC in April 2026 @ 800‑367‑6372, after the dealership would not correct the issue free of charge. 1. Hose Clamp Replacement problems. 2. The raw fuel leakage produces strong gasoline odors inside the cabin- via the air filter, risk of car stalling and the smell could be leathal. 3. The problem was confirmed in a lawsuit. 4. The dealership would not repair the issue. 5. There were no warning lamps or messages on the dash board, the only essential issue were the smells, fumes, odors and lawsuit.

Filed Apr 27, 2026 · Electrical, Fuel system · CA

I’ve been driving my car since September when it was purchased I just got it from dealership 4/9/26 spent over $1100 and have been working like regular full time schedule, I wake up today 4/27/26 trying to work and car is stalling. Not sure what’s going on with these mechanics and technicians. I pay to dollar to ensure my family safety on the road here I am stuck without support due to my circumstances. Also, my car just idles the shuts off doesn’t turn mall the way on, magically a check engine light flashed then car just immediately stalled and won’t turn back over all the way.

Filed Jul 22, 2025 · Electrical, Engine · 56,000 miles · CA

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while at a stoplight, the energy saver START/STOP feature engaged, but the vehicle stalled and failed to restart. There were no warning lights illuminated. The vehicle was towed to an independent mechanic who determined that the START/STOP function failed to operate as designed. The mechanic informed the contact about the federal safety agency Campaign Number: 17V114000 (Electrical System, Engine and Engine Cooling). The local dealer was not contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 56,000.

Filed Mar 25, 2024 · Engine, Fuel system · IL

The Positive Crankcase Ventilation (PCV) valve is crucial for regulating the flow of gases in the engine's crankcase. If the PCV valve malfunctions or becomes clogged in a car like the 2016 Mercedes Benz C300 4-matic, several problems can arise: 1. **Increased Pressure:** A malfunctioning PCV valve can cause pressure to build up in the crankcase. This increased pressure can lead to oil leaks, gasket failures, or even engine seals blowing out. 2. **Poor Engine Performance:** When the PCV valve fails, it can disrupt the air-fuel mixture in the engine, leading to rough idling, stalling, or decreased fuel efficiency. This can result in a loss of power and overall poor engine performance. 3. **Contamination:** A faulty PCV valve may not properly route harmful gases, like unburned fuel and moisture, out of the crankcase. This can lead to contamination of the engine oil, reducing its effectiveness in lubricating engine components and potentially causing premature wear and damage. 4. **Increased Emissions:** A malfunctioning PCV valve can result in increased emissions from the vehicle, as it may not properly recirculate harmful gases back into the combustion chamber for burning. Overall, a nonfunctional PCV valve can negatively impact both the car's performance and the environment, potentially leading to costly repairs and increased pollution. Additionally, prolonged exposure to increased emissions from the vehicle can be harmful to both the environment and the health of individuals. Therefore, it's essential to regularly inspect and maintain the PCV valve to ensure proper functioning of the vehicle.

Filed Feb 14, 2023 · Engine · TX

I made 2 engine stalling complaints at the dealership in 2021/2022.. the dealership kept my vehicle for 2 days and said nothing was wrong. My vehicle recently in stalled in drive gear, I had to cut the car off & turn it back on

Filed Aug 8, 2022 · Fuel system · 61,000 miles · SC

The contact owns a 2016 Mercedes-Benz C300. The contact stated while driving 45-60 MPH, the vehicle began to stall. The contact depressed the accelerator pedal several times but the vehicle failed to respond. The vehicle stalled. The contact was able to veer to the side of the road. The contact was able to restart the vehicle. The check engine warning light and several unknown warning lights were illuminated. The vehicle was towed to the contact’s residence. The vehicle was then towed to the local dealer where it was diagnosed that the fuel pump and fuel tank needed to be replaced. The vehicle was being repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 61,000.

Filed Dec 3, 2018 · Electrical · IL

2016 mercedes benz c300. Consumer writes in regards to starter current limiter. *ld the consumer stated after the recall repair on the starter was completed the failure began. The vehicle would shut off while driving.

Filed Aug 22, 2017 · Electrical · 10,000 miles · FL · fire

Tl* the contact owns a 2016 mercedes benz c300. The contact stated that while driving in inclement weather, the vehicle became stranded in high standing water and stalled. The contact stated that her siblings were able to push the vehicle out of the high standing water. The contact stated that after three attempts to restart the vehicle, the contact noticed smoke billowing from beneath the dashboard. The vehicle became engulfed in flames. The fire department was notified and was able to extinguish the fire. A fire report was filed. No injuries were sustained in the fire. Mercedes roadside assistance was contacted but failed to show up. The vehicle was first impounded and then towed to mercedes benz of cutler bay located at: 10701 sw 211 st, cutler bay, fl 33189, (305) 251-0345. The vehicle was not diagnosed. The vehicle was not repaired. The vehicle was included in the federal safety agency campaign number: 17v114000 (electrical system, engine and engine cooling). The manufacturer was contacted and notified of the failure. The approximate failure mileage was 10,000. The contact stated that the vehicle had not yet been confirmed as a total loss.

Filed Oct 15, 2016 · Body, Electrical · 7,900 miles · OR · fire · 1 injury

On oct 14th at night car was driven in heavy rain off interstate i5 off ramp to exit interstate. There were cars both in front and behind us exiting and upon driving further noticed there was standing water. Other cars were making it through slowly, there was no room to turn around. This car almost made it to the end of the offramp and then stallled. Other cars were forced to go around. Tried to restart the car to no avail. Called for roadside assistance. Noticed smoke coming from the hood and then all lighting went dark in car. Then saw flames from the hood. Quickly ran through water to escape and flames got several feet high. Passer by's had called 911 as entire front of car was engulfed in flames. Fire department had to cut open car hood to put out fire. Car damaged beyond repair and they too were incredulous that a new car would be engulfed in flames after stalling in the rain.

Filed Mar 21, 2016 · Engine · 60 miles · CO

I bought a new 2016 c-class mercedes benz . I had the car for less than 24 hours when the engine light came on. I immediately took the vehicle in and was told that they do not have a fix for the problem. It is a problem with the ambient airflow. The engine does not work properly, causing a rough ride. When trying to accelerate the engine will stall and then shoot forward.