UK Drivers Urged to Remove Common Items from Cars Ahead of Heatwave

As the UK braces for a heatwave this week, motoring experts have warned drivers to remove certain everyday items from their cars. The rising temperatures could make these items dangerous.

The Met Office expects temperatures to go above 30°C on Thursday and Friday. Many areas may cross the official heatwave threshold by the weekend. Experts say what you leave inside your car could risk not only your belongings but your safety too.

Met Office Warns of Long, Intense Heatwave

The Met Office says this hot spell may last longer than previous ones this year. It’s also expected to affect more regions, putting millions across the UK in extreme heat.

This heatwave might stay for several days. Temperatures will remain high in England, Wales, and parts of Scotland. Cities like London, Birmingham, and Manchester may face the worst of it, with highs in the low 30s.

This isn’t just about discomfort. It’s a safety risk. Experts say car interiors can hit 45°C or more in under an hour. That turns your vehicle into a dangerous oven.

Common Items That Become Unsafe in Hot Cars

Experts urge drivers to remove certain items from their vehicles now. These include:

Plastic water bottles: They may seem harmless, but they can heat up and release toxic chemicals like BPA. In rare cases, a full bottle can magnify sunlight and start a fire.
Electronic devices: Phones, tablets, and other gadgets can overheat quickly. Batteries may swell or leak, and devices left in high heat can become permanently damaged.
Aerosol cans: Products like deodorants, air fresheners, or even spray paints should never be left in a hot vehicle. When temperatures rise, these cans can explode, causing both fire risks and personal injury.
Contraceptives and medication: Birth control pills, certain prescription medications, and even some over-the-counter drugs can lose effectiveness when stored in high temperatures. This is especially critical for those who store daily medications in their cars for convenience.
Food items and snacks: While this may seem obvious, many drivers keep food in the car without realizing it. Leftover fast food, protein bars, and even gum can spoil quickly and attract pests.

Experts urge drivers to do a quick scan of their car before leaving it parked during a heatwave — especially in direct sunlight.

Heat-Related Risks Extend Beyond Property Damage

Leaving items in a hot car is not just about damage — it can lead to real danger. A spokesman from a UK-based motoring organisation explained:
“The risk isn’t just that your phone or sunglasses will melt — it’s that certain items could actually start a fire or pose health hazards.”

In recent years, fire brigades across the UK have responded to incidents where heat caused aerosol cans or electronics to ignite. These are preventable events that could have been avoided by simply removing these objects from the vehicle.

In addition, people with chronic conditions are at particular risk. Medications that are sensitive to heat may no longer work as intended, leading to serious health complications.

Parents are also urged to remain vigilant. Never leave children or pets inside a vehicle, even for a few minutes. Cars can heat up extremely fast, and even a short exposure can cause heatstroke or worse.

Tips to Stay Safe During This Heatwave

As the UK enters yet another wave of extreme temperatures this summer, authorities and safety experts are offering simple advice for staying safe:

Clean out your car daily. Check for items like water bottles, gadgets, or any heat-sensitive materials before locking up and leaving your vehicle.
Park in shaded areas whenever possible. Use sunshades or reflective visors to reduce interior temperatures.
Crack open windows slightly when it’s safe to do so — this allows heat to escape and keeps the car from turning into a sealed furnace.
Avoid driving during peak heat (between 11 a.m. and 3 p.m.) unless absolutely necessary.
Use air conditioning wisely. If your car has been sitting in the sun, roll down the windows for a minute before switching on the AC to help vent the built-up hot air.
Stay hydrated and don’t store water in plastic. Carry your drinks in insulated or metal containers that can withstand higher temperatures without degrading.

With warnings now in place and temperatures on the rise, taking a few extra minutes to prepare can prevent long-term damage — and potentially save lives.