What items should not be left in the car as they may cause spontaneous combustion?

[DelRyder]

Lighters, reading glasses, electronic products, hairspray, styling gel, carbonated beverages, perfumes, alcohol, and other items may potentially cause spontaneous combustion. Here are specific methods to prevent car fires during summer: 1. Regular maintenance and avoiding overfilling the fuel tank in summer: High temperatures cause gasoline to expand when heated. Overfilling the tank leaves insufficient space, which may lead to spark plug "flooding," affecting driving performance. It may also cause fuel overflow, which could ignite upon contact with open flames or static electricity, resulting in spontaneous combustion. Therefore, it's best to fill the tank only 70-80%. 2. Avoid leaving lighters, batteries, or reading glasses in the car: During summer heat, items such as disposable lighters, batteries, digital products, CDs, canned drinks, perfumes, and air fresheners can become "hidden hazards" inside the vehicle. Lighters, in particular, contain large amounts of flammable substances like methane and butane. If they expand excessively due to heat, they may rupture and potentially cause a fire. 3. Avoid prolonged exposure to sunlight: Do not leave the car parked under direct sunlight for extended periods. Whenever possible, park in an indoor parking lot or in the shade of trees to prevent prolonged exposure to intense heat.

[DiDakota]

Honestly, I used to love stuffing all sorts of things in my car, but later realized some items can be extremely dangerous in a hot vehicle as they may spontaneously combust. For instance, lighters and lighter fluid left under the windshield in direct sunlight can explode when temperatures rise—I nearly had an accident because of this. Power banks for phones are also prone to overheating, malfunctioning, and catching fire, especially during sweltering summer days. Perfume bottles and alcohol-based spray cans pose risks too, as excessive pressure inside the containers may lead to self-ignition. Sunscreen sprays and aerosol cans are equally hazardous; if dented or deformed, their risk increases significantly. Even seemingly harmless items like newspapers or books I once kept in the car can ignite under dry conditions. Looking back, it's terrifying—now I've developed a habit of checking the dashboard before leaving the car to ensure none of these items are forgotten, and I always try to park in shaded areas. On hot days, car interiors can soar above 60°C (140°F), turning them into potential time bombs. Take my advice: don't be as careless as I used to be.

[SanRhett]

As a seasoned driver with years of experience, I take in-car fire prevention very seriously. You can't just leave anything lying around—aerosol sprays are the most dangerous, like air freshener cans or insecticides. The canister materials can easily crack under high temperatures, releasing gases that may self-ignite. Lighters are another common mistake—I remember one time leaving one in the glove box for half a day, and it exploded. Charging devices like phones and power banks are risky too, as lithium batteries can short-circuit internally when unstable, leading to smoke or fire. Liquid items such as alcohol or perfume are also hazardous—their vapors can ignite in a confined space, with disastrous results. Every time I park, I remind myself: clear out the clutter and avoid leaving flammable items; it's best to store them in a cooler or a spot with heat insulation. Additionally, I regularly check the car for leaks or aging wiring issues—safety comes first, and preventing accidents saves a lot of hassle. This small detail is crucial for ensuring the safety of my family on the road.

[DiKevin]

I was exploring why things in the car catch fire on their own, and found it's all related to temperature. When the car is parked in the sun, the temperature soars like an oven, causing the liquid in lighters to expand and explode. The pressure valves in aerosol cans can't withstand the heat either, making them prone to bursting and self-igniting. When the battery in a power bank overheats, chemical reactions go out of control, posing a high risk of catching fire. Alcohol and perfume evaporate quickly and can ignite with just a tiny spark. Even ordinary bottled water can focus sunlight at certain angles and potentially start a fire, though this is rare. The key is to pay attention to the parking environment, as the car can become dangerously hot quickly on sunny days. I recommend using sunshades or heat-insulating films to lower the temperature and avoid storing these potential bombs inside.

[OIris]

A while ago, a friend mentioned that he left a lighter in his car, and after being exposed to the sun for hours, it suddenly started smoking, scaring him into quickly dousing it with water. This incident was a real wake-up call: high temperatures inside a car can cause items to explode. Aerosol products, like hairspray or sunscreen sprays, can self-ignite if their cans deform or rupture due to heat. Leaking perfume bottles are also dangerous, as high vapor concentrations can catch fire. Aging batteries in charging devices are another hidden hazard. I’ve now made it a habit to quickly glance around before leaving the car, checking if the glove compartment and dashboard are clear. If traveling with kids, extra caution is needed for batteries in toys or flammable plastic items. A simple action can prevent major trouble—safe driving starts with the details.

[VanLydia]

Our family often goes on road trips, and now we pay extra attention to not leaving flammable items in the car, especially when traveling with kids. Water gun toys that children play with contain high-pressure canisters, which can easily explode in a hot car. I've personally seen batteries come loose from toys, posing a significant fire risk under high temperatures. Lighters and perfume bottles are commonly forgotten in cup holders, and the pressure changes from rising temperatures can cause them to ignite. Power banks for phones are another household hazard, as lithium batteries can short-circuit rapidly. Then there are those sunscreen spray bottles—used frequently in summer—that can crack and catch fire after just a few hours in direct sunlight. I recommend everyone develop a habit of checking the car before trips: thoroughly inspect the rear seat storage compartments and use safe storage boxes for items. Educating children is crucial—teach them that the car isn’t a storage space, and reducing accidents means protecting the family.