Fuel costs are something most drivers are keeping a closer eye on at the moment. When filling up already feels expensive, noticing your car getting fewer miles to the gallon can be frustrating.

Sometimes poor fuel economy comes down to driving conditions, traffic or short journeys. Other times, it can be a sign that something on the car isn’t working as efficiently as it should.

At DCM Autocentres, we often speak to drivers in Shaftesbury, Blandford and the surrounding areas who say the same thing: “I seem to be using more fuel than usual, but I don’t know why.”

The good news is that many causes of reduced fuel economy are fairly straightforward to check.

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Low tyre pressure

Tyre pressure is one of the easiest things to overlook, but it has a big impact on fuel economy.

When tyres are underinflated, more of the tyre sits against the road. This creates extra rolling resistance, which means the engine has to work harder to keep the car moving.

That extra effort uses more fuel.

It can also cause tyres to wear unevenly, which adds another cost later on. Checking tyre pressures regularly is one of the simplest ways to improve efficiency and help your tyres last longer.

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Wheel alignment issues

If your wheels are out of alignment, your tyres may not roll smoothly in the direction they should.

This can happen gradually over time or after hitting potholes and kerbs. Around Dorset, especially on rural roads near Shaftesbury and Blandford, potholes and uneven surfaces can easily knock alignment out slightly.

When alignment is off, the car has to work harder, tyres wear faster and fuel economy can suffer.

Common signs include the car pulling to one side, uneven tyre wear or a steering wheel that doesn’t sit straight.

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Binding brakes

Brakes are meant to slow the car down, but if one of them is sticking slightly, it can create constant drag.

You might not notice it straight away, but the engine will. A binding brake means the car needs more power to move, which increases fuel use.

Other signs can include a hot smell after driving, reduced performance or one wheel feeling hotter than the others.

It’s worth getting checked, as leaving it too long can also damage brake components.

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Your car is due a service

A well-serviced car generally runs more efficiently.

Old engine oil, clogged filters and worn spark plugs can all affect how smoothly the engine works. When the engine has to work harder than it should, it uses more fuel.

Skipping servicing may feel like saving money at the time, but it can cost more in the long run through poor fuel economy and avoidable repairs.

Regular servicing helps keep everything running as it should.

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Short journeys and stop-start driving

Short journeys are harder on cars than many people realise.

If the engine doesn’t reach its proper operating temperature, it won’t run at peak efficiency. This is especially true if most of your driving is local trips, school runs, errands or short commutes.

Stop-start traffic also increases fuel use, particularly in town centres and busy routes.

If your driving habits have changed recently, that alone could explain why you’re using more fuel than before.

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Air conditioning and electrical load

Using air conditioning, heated screens, fans and other electrical systems can increase fuel use slightly.

That doesn’t mean you shouldn’t use them. Comfort and visibility matter. But if fuel economy has dropped, it’s worth remembering that extra electrical demand can play a part, especially during very hot or cold weather.

If your air conditioning is working harder than usual or not performing properly, it may also be worth having it checked.

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Extra weight in the car

It sounds simple, but carrying unnecessary weight can reduce fuel economy.

Tools, equipment, roof boxes, sports gear or heavy items left in the boot all make the car work harder.

For work vehicles and family cars, this is very common. A quick clear-out can sometimes make a noticeable difference over time.

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Warning lights or sensor faults

Modern cars rely heavily on sensors to manage fuel, air intake and engine performance.

If a sensor is faulty, the car may use more fuel than it needs to. Sometimes this will trigger a warning light, but not always straight away.

If your fuel economy has dropped suddenly and nothing obvious has changed, diagnostics can help identify whether there’s a hidden issue.

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Driving style

Small changes in how you drive can have a big impact on fuel use.

Hard acceleration, late braking and higher speeds all increase consumption. Smooth driving, gentle acceleration and reading the road ahead can help improve mpg without much effort.

This is especially useful when fuel prices are high and every tank matters.

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When should you get it checked?

If your fuel economy has dropped slightly, it may be down to traffic, weather or driving habits.

But if the change is sudden, noticeable or happening alongside other symptoms, it’s worth getting the car inspected.

Things to watch for include:

• The car feeling sluggish
• Warning lights appearing
• Uneven tyre wear
• Pulling to one side
• Brakes feeling different
• Strange smells or noises
• A sharp drop in miles per tank

Catching the cause early can often save money and prevent further wear.

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Keeping your car efficient

With fuel costs taking up more of everyone’s budget, keeping your car running efficiently matters more than ever.

Simple checks like tyre pressures, wheel alignment, servicing and brake inspections can all make a difference.

If you’re in Shaftesbury, Blandford or the surrounding Dorset areas and your car seems to be using more fuel than usual, DCM Autocentres can help you get to the bottom of it.

A quick check could give you peace of mind, improve efficiency and help you avoid bigger issues later on.