Question 8172
If a vehicle's engine has too high an idle speed, does it affect fuel consumption?
- Yes, because when the engine spins faster, it uses more.
- No, a high idle speed does not affect or alter fuel consumption.
- Yes, because it uses less fuel.
Show answer and explanation
Correct answer: Yes, because when the engine spins faster, it uses more.
Yes. Idle speed is the speed at which the engine runs when you are not pressing the accelerator. If it is too high, the engine runs faster than necessary and uses more fuel. It must be kept at the setting specified by the manufacturer.