Abstract: This invention provides for controlling vehicle fuel feed, which may be either carburetion type or fuel injection type, by electro-stress control means with the electro-stress means being oriented in the power flow drive train of the vehicle between the engine and the drive wheels. As more load and torque is placed upon the engine through the drive train the control structure of this invention will automatically increase the input of fuel to the engine in a steady accurate manner. In one embodiment of the invention a diaphragm-type capacitance transducer is utilized, while in the other embodiment a torquemeter device is used. Both embodiments include a rheostat actuated by the accelerator pedal of the vehicle, which leads from the battery of the vehicle to an electric servomotor and solenoid which when activated, connects the leads from the electro-stress means to the servomotor when the accelerator is depressed.