Change gears appropriately

Shift up as soon as possible to a higher gear when you reach 1800-2500 revolutions per minute (RPM) for petrol fuelled cars or 1500-2000 for diesel fuelled cars. At these levels, the power of the engine is used in an optimal way in relation to its consumption. This does not mean the highest power but the highest output: the highest possible power with the lowest possible fuel consumption.