engine performance
How powerplants behave
Engine performance is how well an engine converts fuel into useful work—measured by power output, efficiency, fuel economy, acceleration, and reliability.
Mechanics and enthusiasts discuss engine performance when tuning vehicles or diagnosing problems: The engine performance dropped after 100,000 miles.
Performance modifications aim to increase horsepower or responsiveness beyond factory specifications.
- horsepowerRate of mechanical work
- power bandElastic fitness loop
- thermal efficiencyUseful output per heat input
- pistonReciprocating cylinder component
- torqueRotational force measurement
zero to sixty · combustion · spark plug · valve timing · exhaust · turbocharger · acceleration · dynamometer · carbon emissions · cooling system · cylinder head · camshaft · ignition system · cold start · crankshaft · catalytic converter · hybrid systems · emission standards
engine performancesluggishness
State of slow movement
underpowered · engine failure · mechanical breakdown · low power · power loss
engine performanceengine failure
Loss of motor function
mechanical breakdown · mechanical failure · engine trouble · seized engine · dead engine
engine performancefuel economy
Vehicle efficiency rating
fuel efficiency · gas mileage · engine efficiency · comfort · smooth ride