Drivers Warned to Avoid These 7 Heatwave Mistakes as Temperatures Soar to 38°C

The Met Office has issued a red heat alert for Wednesday and Thursday this week, forecasting temperatures soaring up to 38°C across vast areas of the country. Cities like Birmingham, currently under an amber warning, are expected to escalate to a red alert as the heat intensifies.

As many prepare to travel during this sweltering spell, drivers are cautioned to steer clear of seven common heatwave mistakes to ensure safety and avoid costly vehicle damage.

Sten Saar, CEO and Co-Founder of Zego, highlights the hidden risks heat poses on vehicles: “Extreme heat strains vehicles just as much as winter conditions—affecting tyres, cooling systems, and items left inside cars. Simple precautions can prevent breakdowns, expensive repairs, and safety hazards during hot weather.”

Below are the seven key errors drivers should avoid:

Neglecting Coolant Levels
Hot weather puts extra pressure on your car’s cooling system. Low coolant can cause engine overheating, leading to severe damage and costly repairs. Always check and top up coolant levels before long journeys. If your temperature gauge rises unexpectedly, pull over safely and let the engine cool.
Ignoring Tyre Pressures
Tyre pressures fluctuate with heat and improper inflation affects vehicle handling, stopping distance, and tyre lifespan. Hot road surfaces combined with incorrect tyre pressure increase the risk of blowouts. Check your tyre pressures regularly and maintain them within the manufacturer’s recommended range.
Overloading the Vehicle
Summer trips often lead to overpacked cars, adding strain on tyres, brakes, and suspension—especially dangerous in high heat. Overloading compromises safety and fuels efficiency. Pack sensibly and travel light whenever possible.
Leaving Aerosol Cans Inside the Car
Aerosol products like deodorants and sprays can become pressurized in extreme heat, risking leaks or bursts. Remove these from your vehicle during a heatwave to prevent damage and safety hazards.
Leaving Sunglasses on the Dashboard
Direct sunlight can warp sunglasses’ frames, damage lenses, and cause distracting glare inside the vehicle. Store them in a case or glove compartment when not in use to preserve their condition and ensure clear visibility.
Running on a Near-Empty Fuel Tank
Driving low on fuel places extra strain on the fuel pump, which relies on fuel for cooling, and may draw sediment into the system. Staying near full reduces vehicle wear and protects against being stranded during unexpected traffic or delays.
Leaving Electronics in Direct Sunlight
Devices like phones and tablets are vulnerable to heat damage—overheating can reduce battery life and cause shutdowns. Keep electronics shaded, stored in the glove box or boot, or inside bags to avoid performance issues.

Sten Saar advises: “Taking a few minutes to conduct these checks can save drivers from costly repairs and safety risks. Also, remember to carry a bottle of water to stay hydrated if delays occur in the heat.”

By following these tips, drivers can stay safe, protect their vehicles, and enjoy a smoother journey during the upcoming heatwave.