How much does it cost to charge a Toyota bZ or bZ4X?

A full charge for a 2026 Toyota bZ FWD, larger battery costs about $14.70 at home, at the US average residential electricity rate of 18¢/kWh. A 2023–2025 Toyota bZ4X costs $12.70 to $13.19 to fill at the same rate, depending on version.

That full charge draws roughly 82 kWh from the wall and buys 314 miles of EPA-rated range — about $0.047 a mile. Filling up the 2026 Toyota bZ costs $10.08 in Idaho, the cheapest state, and $27.15 in California.

What it costs to charge a 2023–2025 Toyota bZ4X

At the US average rate of 18¢/kWh, a full charge of a 2023–2025 Toyota bZ4X costs $12.70 to $13.19 depending on version, against $14.70 for the 2026 Toyota bZ above. Per 100 miles it runs $5.04 to $5.94, against $4.68.

Every bZ4X uses more energy per mile than the 2026 bZ — from 8% more for the front-wheel-drive car to 27% more for a 2023 or 2024 Limited AWD — but costs less to fill, because its shorter range takes fewer kWh to cover. The front-wheel-drive bZ4X was rated 28 kWh per 100 miles in all three model years and is the cheapest version to run. All-wheel drive added three to five kWh per 100 miles, and for 2025 the EPA rated it by wheel size: 31 on 18-inch wheels, 32 on 20-inch.

EPA combined figures for each model year, from fueleconomy.gov, checked September 2026. Per month at 12,000 miles a year. Pick any of these versions in the calculator above to price it at your own rate.

What it costs at three real electricity rates

Your rate is the only input that really moves this number, so here is the same car at three real ones — the cheapest state, the national average, and the most expensive large mainland market.

Hawaii is higher still at 52¢ — a 4.2:1 spread from the cheapest state to the dearest. Figures checked August 2026.

What it costs per mile

A Toyota bZ costs about $0.047 a mile to charge at home at the US average electricity rate, or $4.68 per 100 miles. That is energy only — the EPA rates this car at 26 kWh per 100 miles measured at the wall socket, so charging losses are already inside the figure and should not be added again.

Per mile is the number that survives a change of car: it does not care about battery size, so it is the only fair way to line this car up against one with a much bigger or smaller pack.

What it adds to your electricity bill

Charging a Toyota bZ at home adds about $47 a month to your electricity bill at the US average rate, driving 12,000 miles a year. That is the yearly cost of $562 spread evenly across twelve months — a month with a road trip in it costs more, and a quiet one costs less.

Nothing else on the bill changes: the car draws the same kilowatt-hours whatever else is running in the house, so the increase is the charging and nothing more.

At the cheapest state rate the same driving adds $32 a month, and $86 at the most expensive — the table above has all three. If your utility offers an overnight or time-of-use rate, charging on it lands at the low end rather than the middle.

Where the numbers come from

The EPA rates this FWD, larger battery at 26 kWh per 100 miles with 314 miles of combined range. Those two figures together give the energy for a full charge, which is where the 82 kWh above comes from.

We work it out that way rather than quoting a battery size on purpose. Manufacturers publish gross capacity, which includes a buffer at each end of the pack that never takes a charge, so a cost built on it overstates your bill. And the EPA measures at the wall socket rather than at the battery, so charging losses are already inside the figure — no need to add them, and adding them would count the same loss twice.

What this means for this car

The bZ is the renamed and reworked bZ4X, and the 2026 numbers are the story: 314 miles of EPA range and 26 kWh per 100 miles, which puts a Toyota within one kWh of the Teslas at the top of this list. The choice between its two batteries is unusual in that it is purely about range. Both versions round to the same 26 kWh per 100 miles, so the smaller battery’s 236 miles cost the same per mile as the larger one’s 314 — you are buying distance between charges, not cheaper driving. All-wheel drive is rated 28 kWh per 100 miles with 288 miles of range, about 8% more energy per mile, and the Woodland is rated 29 or 31 depending on its tires. For a car whose badge was a punchline two years ago, the running-cost math is now among the best here.

How it compares

All at 18¢/kWh and 12,000 miles a year. The gas comparison is illustrative — it is not a claim about any particular car.

Figures are for the 2026 Toyota bZ FWD, larger battery, plus the 2023–2025 Toyota bZ4X versions tabled above. Other trims of the same car are rated differently — see above. How these figures are calculated.