general problems of the 2010 Infiniti EX35

The contact owns a 2010 Infiniti fx35. The contact stated that while driving approximately 40 mph, the vehicle would not respond to acceleration attempts. After continually depressing the accelerator pedal, the vehicle jerked forward and then lunged in reverse. The vehicle then suddenly and rapidly accelerated. The failure recurred while the contact was driving at various speeds intermittently. The vehicle was taken to an independent mechanic for diagnostic testing. The contact was not aware of the repair necessary to remedy the failure. The vehicle was not repaired. The approximate failure mileage was 6,874.

I am having 'accelerator lag'; many times when I try to accelerate the car from a stop, it will move very slow. This is very dangerous when I am pulling out in fast traffic. I tried to have this repaired at my dealer, but they said they had no fix for this.