In a manual vehicle, when the engine and conditions allow a higher gear without loss of control or straining the engine, what helps save fuel?

Correct answer

Shift to a higher gear when appropriate for those conditions.

Shift up when appropriate and drive smoothly according to manufacturer guidance and conditions. Do not always use the highest gear or strain the engine at excessively low revolutions. On slopes or when response and control are needed, a lower gear may be necessary. Efficiency does not justify coasting in neutral or compromising safety.