On 8/26/14 I was stopped at a light. When I went to take-off, the car would not accelerate. It finally did but very slowly. This occurred two more time at the next two stop lights. I was then in a center turn lane to turn across three lanes of traffic & when I tried to accelerate, the car died and the electronic display gave a yellow error message that the car was inoperable due to an issue with the braking system. I immediately put the car in park, turned it off & then started it back up. Fortunately it re-started, the error message was gone & I was able to drive into my office parking lot. My Mercedes service dept. Said no codes registered on the computer, probably because I turned the car off so quickly it didn't have time to. Today, 8/17/14, I am having the same issue. My car is back at the Mercedes service department. This is, in my opinion, a dangerous & life threatening problem.

- Altamonte Springs, FL, USA

2014-08-04: Engine light came on, vehicle would not accelerate past 80 km/H and the engine shut off - driving in traffic. 2014-08-05: Brought vehicle to 550 terminal avenue. They said it was just the fault-pump and that it was safe to drive. They advised me that they had to order the part from germany. Vehicle was later returned the same day. (23505 km) 2014-08-06: The vehicle engine shut down while driving out the drive way, so I had it towed to 550 terminal avenue. (23514 km). They replaced a throttle actuator. 2014-08-12: Vehicle was ready for pick up. Vehicle would not start. Battery replaced. 2014-08-14: Picked up vehicle. Then experienced a low accelerating after braking. Went with the foreman for a road test and he agreed that there was a delay when accelerating and that it felt like its going to stall while in "drive". 2014-08-20: They said it was caused by 13 % ethanol in fuel/ software. There's a pinging sound. But I buy the same gas every time 94 octane from chevron. I had a verbal agreement saying that my car was safe to drive and for me to come back to Mercedes Benz with a new tank of gasoline to see if I would still have the same issues as it was stated that the issue may have been cause by using gas with 13% ethanol/software.

- Vanvouver , Bc Canada V6p1p9, AK, USA