* Gasoline (petrol): Used in gasoline engines, common in cars, boats, and lawnmowers.
* Diesel: Used in diesel engines, common in trucks, buses, and some cars.
* Electricity: Used in electric motors, found in electric cars, trains, and many appliances.
* Propane: Used in propane engines, found in some forklifts and generators.
* Natural gas: Used in natural gas engines, found in some vehicles and power generation.
* Jet fuel (kerosene): Used in jet engines, powering airplanes.
To know what fuel *a specific* motor uses, you need to specify the type of motor.