Hybrid cars are those in which hybrid propulsion systems are used.
The term refers to the hybrid electric vehicle, which combines an internal combustion engine and one or more electric motors. Other types of hybrid propulsion systems incorporate a fuel cell, supercapacitor, compressed air motor or inertial battery, in combination with a combustion or electric motor.
Depending on the system used, a hybrid vehicle may have greater energy efficiency. This may be due to the use of a smaller engine, and the use of energy recovery systems (such as regenerative brakes).
As a result of lower energy consumption, economic and environmental benefits are obtained.