The present invention relates to a control system for a vehicle (100), the system comprising: control means operable to monitor an accelerator control signal of the vehicle and to control a powertrain of the vehicle to apply an amount of torque to one or more wheels (111, 112,114, 115) of the vehicle (100) corresponding to the accelerator control signal, the powertrain comprising prime mover means (121, 123); and means for determining whether the measured rate of acceleration of the vehicle and the accelerator control signal have an expected correspondence, wherein if the measured rate of acceleration and the accelerator control signal do not have the expected correspondence, the control means is operable to command a change in the amount of torque applied to the one or more wheels by the powertrain.