1. parallel hybrids. For this type, the internal combustion engine (ICE) and the electric motor are both connected to the mechanical transmission and can simultaneously transmit power to drive the wheels. Usually the parallel hybrids can use a smaller battery pack. Parallel hybrids are more efficient for highway driving than in urban stop-and-go conditions. Honda's Insight, Civic, and Accord hybrids are parallel hybrids.

2. series hybrids. Here regarding series hybrids, only the electric motor drives the drivetrain, and the internal combustion engine (ICE) works as a generator to power the electric motor or to recharge the batteries. Series hybrids usually have a larger battery pack as compared to parallel hybrids. This makes them more expensive than parallel hybrids.







