In a petrol engine, at what engine speed is it best to change to a higher gear to save fuel?
En español: En un motor de gasolina, ¿a qué régimen de revoluciones conviene cambiar a una marcha superior para ahorrar combustible?
Why this is the correct answer
In petrol engines it is best to change gear between 2,000 and 2,500 rpm; in diesel, between 1,500 and 2,000 rpm. Shifting up early reduces consumption.