I was trying to merge onto a freeway from a complete stop and because this freeway has an extremely short on-ramp, you need to get up to a high speed in very little time. As such, I put my car in Sport driving mode and accelerated very hard from a complete stop. The car accelerated as normal for a few seconds (I reached approximately 40 to 50 MPH), then I felt the car lag and felt a loss of power. The car was in limp mode and I couldn-€™t accelerate even though I was pressing the gas pedal all the way to the floor. A few seconds after this occurred, I notice that the check engine light turned on. I was able to maintain a speed around 50 MPH and got off the freeway. I took my car to both the Mercedes dealership and an independent mechanic and both diagnosed a failure of the high pressure fuel pump. I also tried to see if this will happen again and after hard acceleration in regular driving mode, the exact same issues occurred. I have read that there are issues with the high pressure fuel pump with my car model and I ask that you guys please investigate thoroughly to see if a recall would be necessary. Losing power while accelerating is extremely dangerous and a huge safety hazard for all drivers on the road. I could have easily been rear ended by another driver since I couldn-€™t accelerate to a faster speed. I have not yet replaced the high pressure fuel pump but plan to do so in the next few days. Attached is the diagnostic invoice from the Mercedes dealership. As stated on the invoice, please note that my car only has 43,000 miles, which makes the high pressure fuel pump failure very surprising.

- Arcadia, CA, USA

My vehicle losses power and car moved into (limp mode) during the acceleration process for passing, merging onto freeway, coming out of a corner and accelerating. Upon dealer diagnosis P0002 comes up as hpfp as the cause, and I was notified as this being a common issue with the 1.8L motor in my vehicle. Along with timing chain, and tensioner. I was told these issues while driving are directly related to causes accidents.

- Santa Rosa, CA, USA

Cabin fills up with fuel smell, visible leak under fuel tank and by the front left tire. Leak and smell occurs both in motion and stationary/idle.

- Fort Bragg, NC, USA

2014 Mercedes C 250 1) smells of strong fuel fumes inside and outside of vehicle 2) stalls when attempting to pass vehicles or accelerate sometimes 3) red painting has clear coat finish peeling 4) car smells like spoiled milk / mildew during summer months when air conditioner is starting

- Monroe, LA, USA

The contact owned a 2014 Mercedes-Benz C250W. While driving approximately 40 mph, the vehicle began to decelerate on its own and the check engine indicator illuminated. The failure recurred. The vehicle was taken to Mercedes-Benz of palm beach (4000 okeechobee blvd, West palm beach, fl 33409, 561-689-6363) where it was diagnosed that the fuel pump needed to be replaced. The vehicle was repaired. While driving back home at approximately 30 mph, the driver heard a hissing sound and dark smoke gushed from underneath the hood without warning. The vehicle was pulled over to the side of the road. Flames approximately seven feet high poured out from the hood and engulfed the entire vehicle. The police and fire departments were called to the scene. The fire was extinguished by the fire department. There were no injuries and a police report was not filed. The vehicle was destroyed and towed back to the dealer. The dealer stated that the failure was not caused by the previous repair. The manufacturer was made aware of the failure and opened an investigation. The failure mileage was approximately 50,187.

- Miramar, FL, USA

I had been driving on the freeway, got off onto a side road and when approaching a stop light while braking: My car completely died (while in drive). The motor shut off, the electrical dash system lights all went off and the hazard triangle system came on (with the symbol of an exclamation mark(!) inside the triangle). After about a minute and a half, I put it in park, and it restarted. Scary! I had a full tank of gas.

- Yuba City, CA, USA

I leased my vehicle in November of 2013. The vehicle is driven to and from work and in the beginning I never had a problem. A few months ago I was driving down the freeway at 70 mph and all of a sudden the check engine light came on and the vehicle lost power. The vehile would violently shake whe trying to accelerate. I manged to continue to drive for about another 30 minutes and made it to the dealer and turned the car off but once they restarted it the car ran fine. Since then then car will randomly loose power all of a sudden it has been to the dealer 3 or 4 times and they keep it for a week and then give it back and say that they were not able to recreate the issue. I have almost been hit once so far and when I let my brother use the car he was almost hit while making a left turn because of the random power loss. I have contacted mbusa and spoke with someone named juan. I continued to call him ans take the vehicle to the dealer everytime it happened expressing my concerns abiut the car as well as safety. Juan intiallly acted as if he cared but that was shor lived as he finally called back on 10/2/15 and explained that his managers and mbusa were unable to create the issue at the dealer level so there is nothing they will do at this point... at that point I realized that there is nothing that mbusa will do for me and that I will continue to forced to drive and pay for a very unsafe vehicle.

- Spring Hill, FL, USA

Leased our Mercedes and shortly afterwards we started experiencing hesitation, lagging and even stalling of the vehicle as we tried to accelerate. Twice the vehicle has stalled as we pulled into traffic, narrowly escaping possible injury and damaging several cars. Hesitation has occurred without warning, (pressing on accelerator and the engine does not respond by evidence of no RPM increase). Again, this has occured numerous times. We have had the vehicle back to Mercedes four times, for a total of 39 days!!!! and still to this day, the vehicle still has the issue, while Mercedes claims there isn't a problem with the vehicle. They have given us every excuse in the book of why no problem exists, even after the service manager stated that the car has a 6 second delay which is unacceptable!!!!!!! two different individuals have drove the vehicle and experienced the same hesitation problem. The car in our eyes is a hazard to the streets and highways of the state of Florida. We are paying for a car that is dangerous and has the high probability of causing an accident with catastrophic results...........

- Apopka, FL, USA