Motoring experts have previously warned that petrol and diesel could evaporate from fuel tanks when exposed to direct sunlight and heat in extreme circumstances. Around 1-2% of the total volume of petrol and diesel inside a fuel tank could be lost when a vehicle is subjected to hot weather, usually above 35C.

Experts at 1Dot have claimed that losing fuel in heat could cost British drivers almost £1,500 over the course of a lifetime. The hot weather is set to return in force later this week with the Met Office predicting highs of 28C on Thursday. The warm weather will continue into Friday with conditions remaining at 27C ahead of the weekend.

The experts have previously stressed that keeping a tank as full as possible was one of the easiest ways to avoid fuel evaporating.

They explained this simple hack would help to minimise the volume of air that can become saturated.

The specialists have also urged drivers to always double check their fuel cap is properly sealed which will prevent air from entering the valve. 1Dot has also told individuals to park in the shade when temperatures exceed 30C in a bid to reduce the risk.

In addition, other motoring specialists have stressed the risks for petrol and diesel vehicles in extreme heat. Experts from All on the Wrist Auto and Diesel Repair, a garage based in Albuquerque, warned evaporation could have side effects.

They said: "Excessive heat can lead to increased evaporation of diesel fuel, potentially causing vapor lock and reduced engine efficiency.

"Additionally, engine oil may become less viscous in hot conditions, potentially compromising its protective properties.”

However, the AA has previously listed evaporating fuel among their summer driving myths, suggesting drivers don’t have to worry as much as they may have first thought.

A statement from the breakdown experts read: "Many people wrongly believe that petrol evaporates quickly in the summertime, and we're left out of pocket by their cars gradually leaking petrol fumes throughout the day.

"If this was true, you'd walk through car parks and busy streets and smell nothing but petrol - which doesn't happen. Your car's petrol cap does a great job of keeping the petrol where it belongs. Inside your car."