Drivers face having to pay £97 for driving over 30mph with their window down

Petrol and diesel drivers could save almost £100 a year on expensive fuel costs with a "simple hack". Experts are now urging motorists to boost their fuel economy by around seven per cent for petrol and diesel car owners with a "summer driving hack".

Instead of switching on air con, road users are being told they should wind down their windows instead to save cash. But motorists who are driving over 30mph have been warned to keep windows shut and instead use their AC units.

Using air conditioning when driving faster than 30mph can be more efficient because the extra drag created by open windows. John Woosey, Founder of Ripe Motorhome Insurance, said drivers could save £84.98 annually for diesel owners and £97.30 for petrol owners.

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He added: “As soaring fuel prices continue to impact motorists across the UK, driving has never been more expensive, with miles spent on the road really adding up. But aside from taking fewer journeys, it’s difficult to know how to drive more fuel efficiently day-to-day.

"Simple hacks such as turning off your air conditioning when driving at slower speeds may seem like a small change, but it can really add up in the long run." Automotive engineer Josh Regis says: “Did you know that you burn more gas driving around with your windows down than driving around with your AC on?” h

“When you drive with your windows down at high speeds, it will create drag, which will cause your car to work more i.e. burn more gas,” he said. “If it’s above 50 mph, turn the AC on, but if it’s below, roll the windows down,” he went on to say in a viral TikTok.

“Technically you can keep your car on when pumping gas, but you also run the risk of a possible explosion happening,” he said. “Hear me out. There’s a lot of electrical components inside of a car, and a gas tank has a lot of vapor that’s very flammable.

“All you need is one spark and you die in a fiery explosion.”