propulsion efficiency

Propulsion efficiency refers to how effectively a vehicle, such as a car or an aircraft, converts energy into movement. It is a measure of how well the design and technology minimize waste—like friction or drag—while maximizing the distance traveled per unit of energy used, such as fuel or electricity. A higher propulsion efficiency means more distance covered with less energy consumed, making it economical and environmentally friendly. In essence, it reflects how smartly a machine moves through its medium, whether that's air, water, or land.