The BMW i7 is rated 88.8 MPGe (86 city, 93.3 highway) — that is not petrol economy but the distance it covers on 33.7 kWh, the energy held in one gallon. Drawn from a socket it needs 38 kWh per 100 miles, so 12,000 miles a year costs about $775 at $0.17 a kWh. The EPA's own annual figure for it is $850.
Every BMW i7 version, compared
The BMW i7 was rated in a single specification, so its consumption does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $0.17 a kilowatt-hour.
| Version | Combined MPGe | City / Highway | Years | Charging per year |
|---|---|---|---|---|
| Electric | 86 / 93.3 | 2023–2026 | $775 |
What that actually costs
MPGe is an abstraction; the electricity bill is not. At 12,000 miles a year the BMW i7 draws about 4560 kWh, which at $0.17 comes to the figures below.
| Measure | Value |
|---|---|
| Energy use | 38 kWh per 100 miles |
| Cost per mile | $0.065 |
| Charging per year | $775 |
| Charging over five years | $3,875 |
| Against other Electric cars | +$94 a year |
| EPA's own estimate | $850 a year |
City or highway — who is this car for
The BMW i7 gives up 7.3 mpg the moment you leave the motorway — 93.3 out there against 86 in town, a 8% drop worth $35 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 86 MPGe | $800 a year if you only drive in town |
| Highway | 93.3 MPGe | $736 a year if you mostly commute |
| Gap | +7.3 MPGe (8%) | Narrow — equally happy either way |
How the i7 changed over the years
The i7 peaked in 2024 at 90 MPGe (87 city, 95 highway) and was at its thirstiest in 2026 at 88 — 2 MPGe apart, or $18 a year in fuel between buying one year and the other. The 2026 car does 88. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined MPGe | City / Highway | Versions offered | Charging per year |
|---|---|---|---|---|
| 2026 | 85 / 93 | 1 | $781 | |
| 2025 | 85 / 93 | 1 | $781 | |
| 2024 | 87 / 95 | 1 | $763 | |
| 2023 | 87 / 92 | 1 | $773 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 4 EPA ratings of the BMW i7 — 1 engine across 2023–2026. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $0.17 a kilowatt-hour, against EPA's own estimate of $850. Full method.
Frequently asked questions
What is the BMW i7 rated at?
88.8 MPGe combined on average — 86 in the city and 93.3 on the highway, per EPA ratings across 2023–2026. MPGe is distance covered on 33.7 kWh, the energy in a gallon of petrol — the car itself takes none.
How much does a BMW i7 cost to charge per year?
About $775 at 12,000 miles and $0.17 a kilowatt-hour — roughly $3,875 over five years, or 0.065 dollars a mile.
Which i7 version is the most efficient?
The Electric at 88.8 MPGe.
Is the i7 efficient compared with similar cars?
Against other Electric cars it sits below the average of 101 MPGe, computed across 426 ratings.
Are these real-world i7 figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the BMW i7 is $850 against the $775 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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