EV Fires: What Garage-Charger Owners Should Know
EV fires are statistically rare — far less common than gasoline vehicle fires per mile driven. But when they happen in an attached garage, the consequences can be catastrophic. Here is what the data says and how to prepare.
The Real Risk: Context Matters
According to NHTSA data, EVs catch fire at a significantly lower rate than gasoline-powered vehicles. But the risk profile is different:
Lower Overall Risk
- • EVs: ~25 fires per 100K vehicles sold
- • Gas vehicles: ~1,530 fires per 100K
- • BMS (Battery Management System) prevents most failures
Higher Consequence
- • Thermal runaway can reignite for hours
- • Attached garages connect directly to living spaces
- • Requires 3,000–8,000 gallons of water to fully suppress
The real danger is not the probability — it is the severity when charging happens in an enclosed space connected to your home.
Home Charging Safety Checklist
Fire Suppression: What You Can Do
An EV battery fire in full thermal runaway is beyond consumer suppression capability. But an extinguisher can still:
- Suppress flames around the vehicle (tires, interior, nearby materials)
- Buy time to evacuate and close the fire-rated garage door
- Prevent fire spread to the house before fire department arrives
Recommended Garage Setup
A 5–10 lb ABC extinguisher rated at least 3-A:40-B:C, mounted near the interior door to the house. Our top pick, the First Alert PRO5, exceeds these specifications.
For garages with both an EV and e-bikes, consider two extinguishers: one near the house door and one near the main garage exit.
Insurance Implications
Most standard homeowner's insurance policies cover EV fires, but some insurers are adding exclusions or requiring disclosure of home charging installations. Check with your provider about:
- Whether your Level 2 charger installation is covered
- If EV fires are specifically included in your policy
- Documentation requirements (installation permits, inspection records)