why a gas car engine’s optimal range is often between 2000 to 3000 RPM even though they can go lower and up to ~8000 RPM ?

Question

why a gas car engine’s optimal range is often between 2000 to 3000 RPM even though they can go lower and up to ~8000 RPM ?

In: Engineering

Answer 1

By having the optimal level lower down the rpm range the engine can run quieter and will also put less stress and wear on the parts than they would at higher rpms.