Fuel prices rise again – just as you hit the road for summer

August 06, 2025 by

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Planning a road trip this summer? Brace yourself for pricier pit stops at the pump.

If you’re packing the car and heading off on a summer getaway, you’re not alone. And sadly, the rising cost of fuel could make it that bit more expensive.

July saw petrol and diesel prices rise for the second month in a row, according to new figures from the RAC. It’s not dramatic – petrol’s up just under a penny, diesel by almost 2p – but after June’s increases too, it all adds up.

Since the start of summer, petrol has climbed nearly 3p a litre, and diesel 4.5p. That means filling up a 55-litre family car will now cost you £74.26 for petrol or £78.57 for diesel, which is noticeably more than just a couple of months ago.

It’s a frustrating hit just as many families are trying to stretch their family budgets.

“Unfortunately, drivers heading into the busy summer holiday season will be met with rising prices at the pumps,” said RAC fuel spokesperson Simon Williams. “Retailers are keeping their margins high, especially on petrol, and that’s making life harder for drivers.”

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There is cheaper fuel out there – if you know where to look

If you’re travelling through Northern Ireland, you’re in luck as fuel there is the cheapest in the UK. Petrol averages just 128p per litre and diesel 134.5p. Want to go even cheaper? Costco members can fill up for around 125.6p for petrol and 133.2p for diesel – though that only helps if there’s one near your route.

Supermarkets are also consistently better value than other forecourts, with average prices around 4p lower than the national average.

But in some parts of England, prices can differ by as much as 34p per litre depending on the forecourt. That’s the difference between a £69 tank and an £88 one, just for choosing the wrong place to fill up.

How to avoid overpaying

Don’t wait until the tank’s almost empty: give yourself time to compare prices. Free apps such as myRAC can help you find the cheapest fuel nearby, especially if you’re on unfamiliar roads.

In fact, Carwow has its own online fuel price checker tool that allows you to compare the prices of petrol and diesel at nearby petrol stations.

It might not save the holiday, but it’ll definitely take the sting out of filling up.

Top tips to save fuel on your summer holiday road trip

Whether you’re off to the coast, the countryside, or just tackling the school holiday chaos, fuel costs can add up fast. But with these few simple tricks, you can make your tank go further and save money for the fun stuff.

1. Pack light

Every extra kilo in your boot makes your engine work harder. If you don’t need it, leave it behind. Even roof boxes and bike racks add drag, so only bring them if they’re absolutely necessary.

2. Check your tyres

Under-inflated tyres create more rolling resistance, which means your car uses more fuel. Before you set off, check your tyre pressure (including the spare) and top them up to the recommended level, especially if your car’s loaded up with passengers and luggage.

3. Drive smoothly

Sharp acceleration and heavy braking guzzles fuel. Try to anticipate the road ahead and maintain a steady speed. On motorways, stick to the speed limit of 70mph as it’s much more efficient than pushing 70mph+.

4. Use cruise control wisely

Cruise control is great on flat roads, but on hilly routes it can actually use more fuel. Use it on long, level stretches and switch it off when you need more control.

5. Ditch the air con (when you can)

Air conditioning can increase fuel consumption, especially at lower speeds. On cooler days, open a window instead, though at high speeds (like on the motorway), open windows can create drag too, so a brief blast of A/C may be more efficient.

6. Plan your route

Avoid traffic jams, roadworks, or long detours by checking your route in advance. Apps such as Google Maps or Waze can help you spot delays and find faster, fuel-saving alternatives.

7. Fill up in cheaper areas

Fuel prices vary massively depending on where you are. Try to avoid motorway services, where fuel is often 10-15p per litre more expensive. Fill up at supermarkets or in town centres where prices are more competitive.

8. Share the drive (and the cost)

If you’re travelling with other friends or family, consider carpooling as fewer cars means less fuel overall.

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Looking for a new set of wheels? With Carwow you can sell your car quickly and for a fair price – as well as find great offers on your next one. Whether you’re looking to buy a car brand new, are after something used or you want to explore car leasing options, Carwow is your one stop shop for new car deals.

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