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Outside and Vehicle Fire Causes

Causes of outside fires (2024)

2024 National Fire Protection Association estimate of outside fires: 628,500

Causes of outside fires (2024)
40.4%		Unintentional
25.5%		Cause undetermined after investigation
21.5%		Intentional
5.0%		Cause under investigation
4.0%		Act of nature
3.3%		Failure of equipment or heat source
0.4%		Exposure

Unknowns apportioned | Source: National Fire Incident Reporting System
Note: Total does not add up to 100% due to rounding.

2024 National Fire Protection Association estimate of vehicle fires: 211,500

Causes of vehicle fires (2024)
43.8%		Unintentional
22.3%		Cause undetermined after investigation
18.5%		Failure of equipment or heat source
9.5%		Cause under investigation
3.7%		Intentional
1.9%		Exposure
0.3%		Act of nature

Unknowns apportioned | Source: National Fire Incident Reporting System