Here is a more detailed explanation:
1. Heat loss: The vast majority of the energy lost from a car's engine is in the form of heat. This heat is generated by the combustion of fuel in the engine's cylinders, as well as by the friction of moving parts. Some of this heat is used to warm the car's interior and to operate the air conditioner, but most of it is simply dissipated into the environment.
2. Sound loss: A smaller amount of the energy lost from a car's engine is in the form of sound. This sound is produced by the exhaust system and by the vibration of the engine and other components. Some of this sound is necessary for the car to function properly, such as the sound of the horn or the engine idling, but most of it is simply noise pollution.
3. Other losses: A very small amount of the energy lost from a car's engine is in the form of other losses, such as electrical resistance and mechanical friction. These losses are typically negligible compared to heat and sound loss.
Overall, the energy from fuel that is not used to run a car is lost in the form of heat and sound, and to a lesser extent, in the form of other losses.
