A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle. The term most commonly refers to hybrid electric vehicles (HEVs), which combine an internal combustion engine and one or more electric motors.
For improved fuel economy and emissions, hybrids use specially designed tires and wheels, lighter body styles, regenerative braking, engine start/stop features, etc. Hybrid gasoline engines (ICEs) feature electronic throttle controls, variable valve timing, lean burn combustion designs, and more, making them more complex, and challenging! Despite the sophisticated nature of hybrid systems, technicians should be qualified for routine hybrid vehicle service. Don’t expect to see belts and pulleys under the hood, however, as space is often dominated by hybrid drive and electrical components.