Combine this with some other driving techniques and you could cut your fuel bill by up to 30 per cent, saving you £250 per year.

One of the best ways of saving fuel is to avoid revving your engine too much – or too little.

By keeping your revs steady and at the right point on the dial, your engine will run smoothly and use less fuel.

The magic numbers

Depending on which car you drive, you should change gear at a different time. Change gear at around:

• 2,000rpm (revolutions per minute) in a diesel car
• 2,500rpm in a petrol car

Keep your rev counter between 2,000 and 3,000rpm while driving, if possible. This will keep fuel consumption down.

Save money on fuel – check your speed

More green driving tips