There are several types of vehicle engines, including:

1. Internal combustion engines: These are the most common types of engines found in cars, trucks, and SUVs. Internal combustion engines can be further divided into two types: gasoline engines and diesel engines.
2. Electric motors: Electric vehicles use electric motors to provide propulsion. These motors are powered by rechargeable batteries and offer several advantages, including lower operating costs and reduced emissions.
3. Hybrid engines: Hybrid vehicles combine an internal combustion engine with an electric motor and battery pack. The internal combustion engine provides power to recharge the battery pack, while the electric motor provides propulsion at low speeds.
4. Rotary engines: Rotary engines are a type of internal combustion engine that use a triangular rotor instead of a piston to create combustion.
5. Turbine engines: Turbine engines are typically used in aircraft, but some vehicles, such as tanks and buses, also use turbine engines. These engines use a rotating turbine to create power.
6. Fuel cell engines: Fuel cell engines use hydrogen to create electricity, which is then used to power an electric motor. These engines produce no emissions, making them an attractive option for environmentally conscious drivers.

Internal combustion engines are the most common types of engines found in vehicles today, and they can be further classified into two main types: gasoline engines and diesel engines.

1. Gasoline engines: Gasoline engines are also known as spark-ignition engines because they use a spark plug to ignite the fuel mixture. Gasoline engines are typically lighter and more compact than diesel engines and are ideal for smaller vehicles and applications where high horsepower is not required.
2. Diesel engines: Diesel engines are also known as compression-ignition engines because they use compression to ignite the fuel mixture. Diesel engines are typically heavier and more robust than gasoline engines and are used in larger vehicles, such as trucks and buses, and in applications where high torque and towing capacity are required.

Gasoline and diesel engines also differ in terms of their fuel efficiency and emissions. Diesel engines are typically more fuel-efficient than gasoline engines and produce fewer greenhouse gas emissions, but they also produce more nitrogen oxides and particulate matter. Gasoline engines, on the other hand, produce fewer nitrogen oxides and particulate matter, but they are typically less fuel-efficient than diesel engines.