2016 MB 300 C, AWD at 87000 miles started giving gas fuel smell when parked in our garage after driving. I took to a local Foreign Car Repair facility and they found a fuel leak at the fuel injector pump. The mechanic changed the Fuel Injector Pump (Bosch) at a total cost of $745.31. Since the change in the pump, the smell has stopped and I feel safe. Who is responsible to reimburse this cost to me?

- Flemington, NJ, USA

My 2016 C300 4matic, which has been serviced exceptionally well, turned 57,000 miles (7K miles outside of warranty), had the check engine light turn on. I went to my mechanic, who has a state of the art diagnostic unit, and it was diagnosed as code P052E which means that the crankcase ventilation regulator valve including the fuel rail needs to be replaced. Mercedes has known about this being a major problem as they modified one of the parts. My dealership quoted me over $ $2100 to fix it and deemed it not covered by the extended warranty. I have gone online to several Mercedes Benz forums and hundreds of people have had the same thing happen with this part failing around 52K mark. Since Mercedes knew about this - issued an improved part to replace the defective one - NHTSA should mandate a recall. This is not some simple dyi matter. It is a complicated repair consuming many hours. It is wrong that driving this, with this code, could literally kill you. I implore NHTSA to mandate a recall based on the facts specified herein. By the way I have a 1999 ML320 that I have meticulously maintained and drives perfect and I have owned many other Mercedes Benz. I am 58 years old and I have never filed a complaint with NHTSA before. This is a very serious matter. Please help

- Hagerstown, MD, USA

2016 C300 4matic at about 50K miles, check engine light came on and then as I was driving on the freeway the car just stopped accelerating in the middle of the freeway and had to take my car to the side and towed it to the dealer in West covina. Luckily there was no one on the freeway since it was early Sunday morning. Dealer is now saying the car might need engine replacement which will cost me $20K but they want $3000 to do a tear down to make sure. Opened a case with their customer service but they said they can't do anything about it since the car is out of warranty. I am incredibly upset with Mercedes Benz - I have not used the car that much and maintained it myself according to their maintenance booklets. I believe this is an engine defect problem that Mercedes needs to take care of.

- Chino Hills, CA, USA

Fuel smell in cabin - fuel leak in engine compartment. From dealer invoice: Found fuel line leaking from rubber line that comes from bell housing fuel line connector to high pressure fuel pump on engine head.. R and R battery ground.. R and R belly panels.. depressurize fuel system.. replaced rubber fuel line that comes from bell housing fuel line connector to high pressure fuel pump on engine head.. cleaned away contrast spray and test drove again, , problem is resolved.

- Alpharetta, GA, USA

The contact owns a 2016 Mercedes-Benz C300. The contact stated that the vehicle produced an abnormal mold odor, which distracted the contact while driving. The vehicle was taken to Mercedes-Benz of mckinney (2080 N central expy, mckinney, tx 75069, (844) 302-4009) where it was diagnosed that an air conditioning flush was needed. The vehicle was repaired, but the odor returned the following day. The manufacturer was not made aware of the failure. The failure mileage was 16,000. The VIN was unknown.

- Frisco, TX, USA

The contact owns a 2016 Mercedes-Benz C300. While traveling various speeds, the engine siezed and the vehicle entered into limp home mode. The contact stated that all the warning indicators illuminated. The vehicle was taken to Mercedes-Benz of tysons corner (8545 leesburg pike, vienna, va 22182), but they were unable to replicate the failure. The manufacturer was notified of the failure. The failure mileage was approximately 29,000.

- Ashburn, VA, USA

The contact owns a 2016 Mercedes-Benz C300. While driving approximately 71 mph, a knocking sound was present coming from the engine. The vehicle began to thrust back and forth as if it were running out of fuel. Also, a burning odor was present before the speed suddenly reduced to approximately 20 mph. The speed would not increase when the accelerator pedal was depressed. The vehicle was towed to the local dealer (smith motors in haverhill, MA) where it was diagnosed that the engine was faulty. The cause of the failure was not determined. After three months at the dealer, the motor was replaced to remedy the failure. While depressing the brake pedal, a screeching noise was present. The vehicle was taken back to the dealer where it was determined that the brake pads needed to be replaced. The failure mileage was approximately 354.

- Methuen, MA, USA

The contact owns a 2016 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 17V114000 (electrical system, engine and engine cooling). The parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The dealer (atlanta classic cars Mercedes-Benz located at 1705 boggs rd nw, duluth, ga 30096; (770) 279-3600) was called and the contact left a voice message. The manufacturer was not contacted. The contact had not experienced a failure. VIN tool confirms parts not available.

- Stone Mountain, GA, USA

The contact owns a 2016 Mercedes-Benz C300. When the contact attempted to drive the vehicle, the push start button failed to start the vehicle. The vehicle was taken to the dealer (West palm beach Mercedes-Benz located on 4000 okeechobee, West palm beach, fl). The contact was informed that the correct key was not used to start the vehicle. The vehicle could not be serviced because the part for the repair was unavailable. The vehicle was not repaired. The contact received notification of NHTSA campaign number: 17V114000 (electrical system, engine and engine cooling). The part needed for the repair was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The approximate failure mileage was 11,000. VIN tool confirms parts not available.

- Lake Worth, FL, USA

The contact owns a 2016 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 17V114000 (electrical system, engine and engine cooling). The part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The local dealer, Mercedes Benz of fort Washington 404 Pennsylvania avenue fort Washington, pa 19034, was contacted and informed the contact that they had not heard of the recall previously. The manufacturer was not made aware of the issue due to a constant hold time applied to the calls. The contact had not experienced a failure. VIN tool confirms parts not available. The consumer stated the he wanted to withdraw his complaint. Updated 09/20/2017

- Rose Valley, PA, USA

The contact owns a 2016 Mercedes-Benz C300W. The contact received notification of NHTSA campaign number: 17V114000 (engine and engine cooling); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

- Round Rock, TX, USA

The contact owns a 2016 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 17V114000 (engine and engine cooling, electrical system). The part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. A dealer was contacted and stated that the parts were not available. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

- Cary, NC, USA

The contact owned a 2016 Mercedes-Benz C300. While driving 15 mph, a fire erupted from the battery of the vehicle. The contact extinguished the fire and stated that water entered into the engine, which caused the vehicle to hydrolock. The vehicle was towed to the dealer and deemed destroyed. There were no injuries and a police report was not filed. The manufacturer was made aware of the fire. The failure mileage was 18,500.

- Long Beach, CA, USA

The contact owns a 2016 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 17V114000 (engine and engine cooling, electrical system); however, the parts to do the repair were unavailable. The contact stated that the manufacturer 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.

- Waialua, HI, USA

C300 anti collision sensor malfunction light displayed and loss engine power for several seconds. The car was traveling aprox 20 mph at the time on city street. Then power resumed, the warning light went out. Mercedes-Benz of temecula, ca could not find a problem. Workorder 229423, 9/13/16

- Temecula, CA, USA

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.

- Centennial, CO, USA