Churchill magazine

How to reduce the cost of driving by saving fuel

Updated on: 11 March 2026

A blue car drives through a country road at sunrise.

News from around the world continues to highlight the impact global events can have on energy prices, particularly gas and oil.

Although much of what's happening is out of our control, there are some practical steps we can take to help us use less fuel.

Whether you're driving petrol, diesel or electric, these tips will help you cut your fuel usage and save money.

Stay smooth

Driving a car properly and economically is all about smoothness. Sudden acceleration, braking and not anticipating what the traffic is doing costs petrol.

Slow down

The faster you drive the more fuel you use. Slow down and cut your fuel usage.

Get going

Modern cars don't need to be "warmed up" in the way older cars did. Start the car and move off without using-up unnecessary fuel.

Don’t stick in lower gears for longer than needed

Start the car and get into the highest gear you can as soon as possible. Some modern cars will indicate the need to shift up, so take that advice.

Plan your journey

Time spent getting lost and finding your way again will waste fuel.

Clear out the clutter

The more weight a car has, the more fuel it uses. Before you set off, clear the boot and interior of any unwanted clutter. Also, be sure to remove any unused roof racks, roof boxes or trailers. As well as adding weight, these also cause drag which makes your car work harder and use more fuel.

Check your tyre pressure

Check that your tyre pressures are as the manufacturer recommends in the car’s handbook. Under inflated tyres increase resistance which means you could use as much as 5 – 10% more fuel for your journey.

Only use what you need

While the electrical features in most cars only have a tiny impact on fuel use, there is one main exception: air-conditioning. It increases engine load which leads to greater fuel consumption, so before you stick on the AC, ask yourself if you really need it.

Close the windows

Open windows and sunroofs cause drag which makes the engine work harder and burns more fuel. If you’re debating between opening the windows on a sweltering hot day or using the air-con, then the clue is in the speed you’re doing. If you're doing below 40mph, opening the windows is likely to be more efficient. Above 40mph, and you should close your windows and use the AC.

Turn off the engine

Take advantage of stop-start technology or, if you’re stationary in traffic for more than a few seconds, turn off the engine. Many modern engines use less fuel to restart than they do left idling, even for just 10–20 seconds.

Service your car

Sounds obvious, but skimping on basic maintenance means that the car will be operating much less efficiently and that means poorer fuel consumption. 

Calculate your consumption

You won’t know if your new driving style and practices are working unless you know how many litres you get per mile. Some cars may have on-board computers, which are not always accurate. First fill the tank, zero the trip meter and note the mileage. Go on a long journey, 50-100 miles. Fill the tank again and note the number of litres taken. Finally divide the number of miles driven by the amount of fuel used.

Car share

Try not to take more cars than are necessary. Share cars and take it in turns to pick each other up.

Consider economical cars

When the time comes for you to sell your car and look for another one, consider more economical models. It could save you money in the long run.

What about EVs?

If you drive an electric vehicle, smooth driving and reducing drag will also help your battery range, while pre‑conditioning your car while it’s plugged in can reduce energy use on the road. If your EV uses a heat pump, climate control is more efficient than older resistive systems.

Group your journeys

Rather than going out, coming home and going out again, group your journeys together to cut down the time you’re out on the roads. It takes more energy to get a car moving once it’s stopped and you may even find you save on your car insurance by cutting down on your average annual mileage.

Avoid rush hour

Rather than leaving home and sitting in traffic for hours, leave a little earlier or later if possible and try to miss the rush hour. As well as reducing your journey time and so reducing your fuel consumption, you’ll also arrive a little less stressed.

Take advantage of fuel apps

Download pump price apps to your mobile and be prepared to shop around to get the best price.

Walk

If you're not going far, why not leave the car at home? Not only will you be saving fuel, but walking is brilliant exercise too.

Related articles

Three children sitting in the back of a car, one of whom has their head in their hands.
Motor

Ways to combat car sickness

According to recent research, 41% of UK drivers fear or actively avoid long journeys with their children due to worries about car sickness. We've got the tips to help.
A woman looking frustrated while driving
Motor

How to stay calm behind the wheel

Encountering aggressive drivers can be frustrating, but reacting in the wrong way can make things worse. Our guide will help you stay composed, de-escalate tense situations, and drive with confidence.
A woman in a red shirt sitting at the kitchen table on her laptop and the phone.
Motor

How to make a car insurance claim

Need to make a car insurance claim? Find out how.