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Explore the datasets behind our verdicts. Every chart shows its unit, geography, time period and limitations. Download the numbers or follow the original source.

Observed data and modeled estimates answer different questions. These datasets are not a single time series. We do not fill missing years with estimates or treat hybrid vehicles as battery-only EVs.

Europe · 2025

Denmark · observed 2025 · grouped powertrains

fires per 10,000 cars

The agency counts dispatches to fires involving vehicles and reports a fleet-based rate for electric and hybrid cars combined. This is not an isolated traction-battery ignition rate; the rate is not adjusted for vehicle age or mileage, and the exact within-year fleet exposure denominator is not specified in the factsheet.

Source: Danish Emergency Management Agency

Read beyond the bars.

Fire counts need a fleet denominator. Lifecycle emissions depend on vehicle size, lifetime and the electricity mix. Cold-weather tests depend on the cars, temperatures and cabin heating. A useful comparison explains these differences.

Why there isn’t a global fire-risk leaderboard

There is no harmonized dataset in this collection for battery-only EV and combustion-car fires across the US, Europe, China and Australia. We show Denmark’s explicitly grouped statistics instead of inventing rates for missing markets.

Original data sources