Seattle Trendlines

Monday, August 31, 2026·Charts every weekday

Battery or hybrid: Washington’s EV mix, July 2026

transportation
energy
Published

August 17, 2026

Plug-in vehicles registered in Washington by type, monthly, 2017 to July 2026: battery-electric rising steeply to 230,345 while plug-in hybrids climb far more gently to 55,589.

Washington had 230,345 battery-electric vehicles registered in July 2026, up 13.5% on the year, and 55,589 plug-in hybrids, up 6.1%. Pure battery cars are 81% of the state’s plug-in fleet.

The EV post charts those two added together. Split apart they answer a question the total can’t: whether the plug-in hybrid — a car with a cord and a petrol engine, sold for a decade as the bridge to the electric one — turned out to be a bridge or a dead end. The two slopes are not close, and they have not been converging.

Registrations in force, not sales: a stock that grows with purchases and shrinks as cars leave the road or the state, so a month that dips is not a month nobody bought one. Counted at the owner’s registration address.

Source: Washington State Department of Licensing, Electric Vehicle Population Size History By County, via data.wa.gov 3d5d-sdqb, statewide registrations in force. Bench post — generated from the latest observation in the site database.