How much does it cost to charge an Audi e-tron or Q8 e-tron?

A full charge for a 2025 Audi Q8 e-tron quattro, 20-inch wheels costs about $21.05 at home, at the US average residential electricity rate of 18¢/kWh. A 2019–2023 Audi e-tron costs $16.89 to $17.49 to fill at the same rate, depending on version.

That full charge draws roughly 117 kWh from the wall and buys 272 miles of EPA-rated range — about $0.077 a mile. Filling up the 2025 Audi Q8 e-tron costs $14.44 in Idaho, the cheapest state, and $38.89 in California.

What it costs to charge a 2019–2023 Audi e-tron

At the US average rate of 18¢/kWh, a full charge of a 2019–2023 Audi e-tron costs $16.89 to $17.49 depending on version, against $21.05 for the 2025 Audi Q8 e-tron above. Per 100 miles it runs $7.74 to $9.54, against $7.74.

Every e-tron fills for less than the 2025 Q8 e-tron, because each covers fewer miles on a charge, but none costs less per mile: the 2021–2023 SUV and the 2023 Sportback match its 43 kWh per 100 miles, and the 2019 SUV, at 46, uses about 7% more. The S models are where the running cost climbs, and wheel size decides most of it: 21- or 22-inch wheels add seven kWh per 100 miles to either body. fueleconomy.gov carries no 2020 record for the SUV body, only the Sportback, so a 2020 e-tron SUV has no row of its own here.

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. EPA figures checked September 2026; electricity rates checked August 2026.

What it costs per mile

An Audi Q8 e-tron costs about $0.077 a mile to charge at home at the US average electricity rate, or $7.74 per 100 miles. That is energy only — the EPA rates this car at 43 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 an Audi Q8 e-tron at home adds about $77 a month to your electricity bill at the US average rate, driving 12,000 miles a year. That is the yearly cost of $929 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 $53 a month, and $143 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 quattro, 20-inch wheels at 43 kWh per 100 miles with 272 miles of combined range. Those two figures together give the energy for a full charge, which is where the 117 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

Audi sold its first electric SUV as the e-tron for 2019 to 2023 and as the Q8 e-tron for 2024 and 2025, and fueleconomy.gov has no 2026 listing, so this page covers every model year of one car under two names: the 2025 Q8 e-tron in the headline and the e-tron in its own table. It is among the thirstiest SUVs on this site. The 2025 Q8 e-tron quattro on 20-inch wheels is rated 43 kWh per 100 miles, 72% more energy per mile than a Tesla Model Y and a little more than a Rivian R1S. The rename went with more range, not a lower bill per mile: a 2021–2023 e-tron is rated the same 43 kWh per 100 miles but covers 222 to 226 miles against 272, so the Q8 costs more to fill and about the same per mile. On 21-inch wheels the 2025 car is rated 46 with 254 miles, and the 2025 Sportback carries identical ratings to the SUV. The 2024 model year is the odd one: the Q8 e-tron SUV has a single EPA listing at 41 kWh per 100 miles and 285 miles, and the 2024 Sportback was rated 39 with 296. The performance SQ8 e-tron is the expensive end, rated 48 on 20-inch wheels and 56 on 21- or 22-inch wheels for 2025, the latter 30% more energy per mile than the car in this table.

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 2025 Audi Q8 e-tron quattro, 20-inch wheels, plus the 2019–2023 Audi e-tron versions tabled above. Other trims of the same car are rated differently — see above. How these figures are calculated.