"Engine performance" refers to how well an engine operates or functions. It is a measure of how efficiently and effectively the engine converts fuel into energy to power a vehicle or machine. Full definition
Active thermal management uses targeted engine heating and cooling to improve engine performance in hot and cold ambient temperatures. (wardsauto.com)
The increase in engine performance is accompanied by some larger brakes, the discs now 340 mm at the front and 310 mm at the rear. (evo.co.uk)
The precise timing, duration and extent to which these valves open significantly affects all aspects of engine performance — from power and torque to fuel economy and emissions. (mechadyne-int.com)