Car money saving tips – 8 tips to reduce your fuel consumption.

Note: This article was published in March 2022 and updated in April 2026.

In early 2026, petrol and diesel prices saw some of their largest monthly increases on record. While fuel prices in the UK remain unpredictable, the good news is that small changes to how you drive can contribute to fuel efficiency, reduce emissions, and often keep your car running for longer.

In this guide, we break down the most effective ways to reduce fuel consumption, based on modern vehicles, driving habits, and current technology.

5 ways to reduce fuel consumption:

1. Drive smoothly and avoid harsh acceleration.
   
2. Keep tyres properly inflated.
   
3. Reduce unnecessary weight in your car.
   
4. Use higher gears where possible and keep revs low.
   
5. Plan routes to avoid traffic and stop-start driving.

What affects fuel consumption?

Even with more advanced engines, fuel use still depends heavily on how a car is driven and maintained.

Here’s what can impact your fuel efficiency:

• Driving habits, including acceleration, braking, idling, and speed.

• Vehicle maintenance, such as tyre pressure and engine oil.

• Vehicle specifications, including weight and engine size.

• Road and traffic conditions, like congestion or poor weather.

Features like eco mode and stop-start systems can help reduce fuel use, but they’re most effective when combined with good driving habits.

If you’re interested in how your own car performs, Fleet News offers a useful fuel cost calculator where you can enter your make and model to get an idea.

Keeping your car running efficiently isn’t just about fuel – it’s also about managing longer-term repair costs. Having a warranty plan in place can help make those costs more predictable.

Simple driving habits that save fuel:

Improving fuel efficiency doesn’t mean changing how you drive completely — it’s about making small adjustments that add up over time.

Accelerate and brake gently:

• Gradual acceleration and gentle braking help your car use less fuel and run more smoothly.

• Looking further ahead on the road also gives you more time to react, reducing the need for sudden stops.

Rapid acceleration increases fuel use as the engine burns more fuel to reach speed, while harsh braking often leads to higher consumption as you accelerate again.

Smoother driving habits, including using engine braking where appropriate, helps keep fuel use lower throughout your journey.

Maintain a steady speed:

Your car uses less fuel when travelling at a consistent pace. Frequent acceleration and braking increase fuel use and put extra strain on the engine.

On longer journeys – particularly on motorways – maintaining a steady pace can make a noticeable difference. Cruise control can help with this on flat roads.

How idling affects fuel consumption:

When your car is stationary, it continues to use fuel even without moving.

If you’re waiting in your car for short periods, turning the engine off can help to:

• Reduce fuel use

• Lower emissions

• Improve air quality

Many newer cars include start-stop systems that do this automatically, but in older vehicles, switching off manually can make a difference.

It’s also worth noting that leaving your engine running while parked can lead to a fine in some situations, as unnecessary idling is restricted under the Road Traffic Act.

Combine shorter journeys:

Engines are less efficient when they’re cold, so multiple short trips often use more fuel overall before the engine reaches its optimal temperature.

Combining errands into one journey allows the engine to warm up properly and stay at its most economical operating level.

Planning your journey in advance can also help reduce unnecessary mileage and keep routes more direct.

Car maintenance tips to improve fuel economy:

Regular maintenance doesn’t just prevent problems – it helps your car run more efficiently.

How tyre pressure affects fuel use:

When your tyres are properly inflated, your car rolls more easily, reducing fuel consumption.

If tyre pressure is too low:

• The engine uses more fuel to keep the car moving.

• This can cause tyres to wear down more quickly.

You can find the correct pressure in your car manual or inside the driver’s door, and most petrol stations have air pumps available to top up your tyres.

Eco or “green” tyres can also help lower fuel use by reducing rolling resistance. They may also provide a quieter ride and improved handling.

Quick tip: check your tyre pressure monthly to keep your car running at its best.

Engine oil and regular servicing:

Engine oil reduces friction and keeps components running smoothly.

Using the manufacturer-recommended oil, and checking it regularly, supports better fuel economy and helps prevent unnecessary wear.

A well-maintained car typically uses less fuel, and even minor issues like a clogged air filter or worn spark plugs can affect how fuel is burned.

Most modern vehicles require servicing every 12 months or 12,000 miles, but it’s always best to follow your manufacturer’s guidance.

Smart driving tips to reduce fuel use:

Beyond maintenance, there are a few simple changes you can make day-to-day to help reduce fuel use.

Reducing vehicle weight:

Carrying unnecessary weight increases fuel use over time, so removing any unused items is a simple way to reduce it.

At higher speeds, aerodynamics can affect how efficiently your car runs. Roof racks, boxes, and open windows can increase drag, which raises fuel consumption – especially on motorways.

According to the Vehicle Certification Agency, roof racks can increase the fuel use by around 25% when driving at motorway speeds.

Quick tip: Even small changes – like clearing out the boot – can make a difference.

Does air conditioning affect fuel consumption?

Air conditioning does use fuel, but at higher speeds it can be more economical than driving with the windows down.

At lower speeds, the aerodynamic drag is minimal, so opening windows is usually the more efficient option.

Fuel apps and loyalty schemes for fuel savings:

Fuel prices can vary significantly between petrol stations, but the UK government has introduced new fuel price reporting rules, making it easier to compare prices in real time. Apps like PetrolPrices or Cheap Fuel UK can help you find better-value options nearby.

Loyalty schemes can also add up over time, offering points or discounts for regular use. This can be simple way to reduce fuel costs in the long run.

Choosing a fuel-efficient car:

If fuel costs are a big concern, the type of car you drive can make a noticeable difference.

Newer vehicles are generally more efficient, with improved engines, lighter materials, and advances in hybrid technology.

Hybrids are particularly effective in slow-moving and congested traffic, where they rely more on electric power at lower speeds. Electric vehicles can significantly reduce running costs by removing the need for petrol or diesel, which is why interest in EVs is growing, particularly as drivers look for protection from rising fuel prices.

If you’re considering a change, it’s also worth looking at overall reliability. Choosing a car that’s both efficient and dependable can help keep running costs lower. To learn more about how different cars perform, you can explore the latest Warrantywise Reliability Index.

Small changes add up:

Reducing fuel consumption isn’t about making one big change — it’s about small, consistent improvements that add up over time.

Simple habits like smoother driving, regular servicing and planning your journeys can all help lower fuel use and running costs.

Choosing a reliable vehicle, keeping it well-maintained, and putting measures in place to help manage unexpected repair costs all contribute to keeping your car running smoothly and making costs more predictable.