Can a car spontaneously combust when not started?

[Madelyn]

Generally, no. Electrical leakage, grounding issues, oil leaks, excessive contact resistance, carburetor backfire in motor vehicles, mechanical friction fires, and improper parking positions can all cause a car to spontaneously combust. Among spontaneous combustion accidents caused by circuit faults, grounding issues are the primary cause. Here is additional information: 1. Short circuits causing fires: Installing electrical devices or modifying circuits in a car can lead to short circuits and fires due to installer errors or rough construction. Aging vehicle electrical components and wiring, combined with lack of inspection and maintenance, can also easily result in short circuits and fires. Aging engine fuel lines and improper replacement of fuel lines or other parts can cause fuel leaks, which, when exposed to sparks from short circuits or aging electrical components, can ignite gasoline and cause a fire. Poor wire connections and excessive local resistance generating heat can cause wire connections to overheat and ignite flammable materials. 2. Grounding issues: Many new car owners, eager to pamper their newly purchased vehicles, may install anti-theft devices, upgrade to high-end audio systems, modify the car's appearance, or add air conditioning, among other things. These actions can lead to grounding issues and are also one of the causes of car spontaneous combustion.