internal combustion engine efficiency

Internal combustion engine efficiency measures how well the engine converts fuel into useful work, like moving a vehicle. It’s expressed as a percentage of energy in the fuel that becomes actual power; the rest is lost as heat, noise, and friction. Typical efficiencies range from 25% to 40% for gasoline engines, meaning only a quarter to nearly half of the fuel’s energy helps move the car. Improving efficiency involves optimizing combustion, reducing friction, and using advanced technologies. Higher efficiency means getting more power from less fuel, which saves money and reduces emissions.