There are several types of engines used in vehicles and machinery, with the most common being internal combustion engines and electric engines. Internal combustion engines burn fuel, such as gasoline or diesel, to create power, while electric engines use electricity stored in batteries to generate motion. Another type is the hybrid engine, which combines both internal combustion and electric systems to improve fuel efficiency and reduce emissions. Additionally, there are steam engines, which use steam pressure to drive pistons, and turbine engines, commonly found in aircraft, that generate thrust through high-speed exhaust gases.