What is the most common cause of vehicle fires?

The most common cause of vehicle fires is leaking or spilled fluids. This occurrence typically involves flammable liquids such as gasoline or oil leaking from the fuel system or other components of the vehicle. When these fluids come into contact with a heat source—like the hot engine, exhaust system, or electrical short—they can ignite and lead to a fire.

Understanding the mechanics of vehicle operation highlights the risks associated with fluid leaks. Most vehicles have a variety of fluid systems, including those for fuel, oil, and coolants. Regular maintenance is essential because neglect can result in leaks due to worn seals, damaged hoses, or corrosion.

While overheating engines, faulty electrical systems, and improperly maintained tires can contribute to hazardous situations and may lead to fires under specific circumstances, they are not as commonly identified as direct causes when considering the broader scope of vehicle fires. Each of those factors is important for overall vehicle safety, but leaking or spilled fluids represent a more frequent trigger for ignition and combustion incidents in vehicles.