LifestyleMotoringMet OfficeAs the UK officially enters summer on Monday, drivers are being told to remove a number of common items from their cars to avoid fire risks, explosions and damage10:10, 29 May 2026Motorists are being warned to stop leaving a number of everyday items in their vehicles from Monday, the official start of summer. According to the Met Office, summer in the UK kicks off on June 1, meaning temperatures should become warmer and more settled over the coming months.‌Brits have already experienced their first heatwave of the year, with the May temperature record being broken for two consecutive days as some parts of London soared to a sweltering 35C.‌Warmer weather brings a number of additional risks to people's wellbeing, pets, and even essentials such as medication.‌As the country prepares for rising temperatures, experts are cautioning people against leaving a number of common items in their car, as they could pose a fire hazard, explode, jeopardise people's health or result in costly damage.Car insurance firm Rooster Insurance shared the guidance on their TikTok account, alerting drivers that vehicles can exceed 50C in hot weather due to the 'greenhouse effect' created by the windows.The insurance company said: "Here are eight things you should never leave in a hot car. In summer your car can reach over 50 degrees celsius so it's really important to not leave some things in the car and these are aside from the obvious answers such as children and pets.‌Content cannot be displayed without consent"Number one is electronics. Heat can fry the batteries or even cause them to swell or leak. In a hot car anything with a lithium battery in becomes a fire hazard."Number two is aerosol cans. With things such as hairspray and deodorant the heat can actually make them explode. Number three is bottled water. When heated the plastic can actually leak chemicals into your water."Article continues belowThe firm proceeded to include sunglasses on the list of items that shouldn't be left in a vehicle. The heat can distort the frames and harm the UV coating, leaving motorists requiring to buy another pair.The insurance provider continued: "Number five is medications - high temperatures can actually ruin their effectiveness making them unsafe to use. Number six is hand sanitiser. Flammable alcohol is a fire hazard especially in direct sunlight."Number seven is orange juice and other sugary drinks. This is because the heat can actually cause these to explode which would make a huge mess in your car. And number eight is of course lipstick."Choose Daily Mirror as a 'Preferred Source' on Google News for quick access to the news you value.‌Met OfficeHeatwaveCar insuranceAnimals