Are gas-electric hybrid cars really fuel efficient?

Hybrid cars are more fuel efficient than regular gasoline cars.

First of all, since hybrid power has two different output modes: battery and engine, a general hybrid car is powered by the battery when the speed is less than 30km/h, and when the speed exceeds 30km/h /h (or when the speed reaches a certain value), the power is provided by the engine. Due to the staggered output of two different power output methods, the engine's fuel consumption is greatly reduced.

How is the hybrid charged? When the engine is started, the vehicle's battery will be automatically charged. Generally, hybrid batteries are stored in the trunk. Compared with gasoline vehicles, hybrids consume less fuel. However, since hybrids require on-board batteries, battery maintenance also requires a certain amount of money.