In fact, several conditions must be met for a water bottle to start a fire inside a car. But that doesn’t mean it can’t happen. Amuchastegui came close to experiencing such an event himself, which prompted him to conduct the experiment as a public warning.
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If the weather is mild, leaving water in the car is not a problem. But when the vehicle is parked in direct sunlight in the middle of the day, it’s a different story. The seemingly harmless water bottle can literally turn your car into a “fire engine.”
The reason is that water bottles, which are usually spherical and made of transparent plastic, can act as magnifying glasses. When filled with water, they can focus sunlight onto a single point. At noon, the temperature inside a car can reach almost 60°C. When sunlight passes through the bottle and is concentrated in one spot, the heat can rise even higher, creating a fire hazard.
Many people admit that they often leave a water bottle on the seat without imagining the serious consequences. In addition, some automotive experts point out another risk: bottles placed on the passenger seat can roll off and get stuck under the brake or accelerator pedals. In emergency situations where the driver has to brake suddenly, a bottle stuck under the brake pedal can be extremely dangerous. ️️ Continue on the next page ️️
In addition to the fire hazard, storing bottled water in a hot car for extended periods of time also poses a health risk. A previous study found that drinking water stored in plastic bottles exposed to high temperatures for extended periods of time can release harmful substances that could potentially harm your health. Car Dealer
The study specifically highlighted cases where drivers left water bottles behind the seat for months and then casually drank from them whenever they felt thirsty after getting into the car. This seemingly harmless habit can silently undermine your health every day.
Research shows that when the outside temperature ranges from 27°C to 38°C, the interior of a car without air conditioning can heat up to between 54°C and 77°C. These temperatures are even higher than the “low” setting on a conventional heater.
Another study by the American Academy of Pediatrics found that the temperature difference in cars remains minimal over time, regardless of whether the windows are fully closed or slightly open. In either case, the temperature inside can rise by about 40°C in an hour, even if the temperature outside is only 22°C.
Bottom line: It’s best to break this habit before it’s too late. If you have to leave bottled water in your car, at least wrap it well and avoid placing it in places exposed to direct sunlight.
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