Integrated Motor Assist vehicle.
Integrated Motor Assist, cutaway car. Integrated Motor Assist. (commonly abbreviated as IMA) The use of an electric motor mounted between the internal combustion engine and transmission to act as a starter motor, engine balancer, and assist traction motor. Energy that used to be wasted when applying brakes is captured and stored as electric power. When the car accelerates, the stored energy is released, helping vehicle performance and cutting down on fuel consumption. Technical car cutaway.