gas pedal won't give gas on 2002 Mercedes-Benz C240

I just bought the 2002 mercedis C240 car from auction as is.Tha motor starts good when i shift the gear it shift fine on D and R and it moves but when I try to give it a gas it won't do it.the gas pedal moves up and downe easly but it just won't give a gas. on the dash ESP light is on. please some one help what could be the solution.

Asked by for the 2002 Mercedes-Benz C240
A MB dealer or a reputable shop that services MB vehicles will be the best answer. You could have multiple problems affecting the car and this particluar condition.