BMW M8 Competition Coupe
17 MPG The 2025 BMW M8 Competition Coupe is EPA-rated at 17 MPG combined (15 city / 22 highway). Over 15,000 miles a year that is about 882 gallons, $2824 a year in fuel, or $0.188 per mile at $3.20/gal.
Across its full 2020–2025 run it averages 17 MPG, essentially flat across 5 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.147 | $1471 | $2206 | $2941 |
| $3.00/gal | $0.176 | $1765 | $2647 | $3529 |
| $3.20/gal | $0.188 | $1882 | $2824 | $3765 |
| $3.50/gal | $0.206 | $2059 | $3088 | $4118 |
| $4.00/gal | $0.235 | $2353 | $3529 | $4706 |
| $4.50/gal | $0.265 | $2647 | $3971 | $5294 |
| $5.00/gal | $0.294 | $2941 | $4412 | $5882 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2025 | 17 MPG | 15 | 22 | $4550 | 517 | 1 |
| 2024 | 17 MPG | 15 | 22 | $4550 | 517 | 1 |
| 2023 | 17 MPG | 15 | 22 | $4550 | 517 | 1 |
| 2022 | 17 MPG | 15 | 21 | $4550 | 522 | 1 |
| 2020 | 17 MPG | 15 | 21 | $4550 | 518 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 229 subcompact cars models tracked here, the BMW M8 Competition Coupe ranks 207 on current figures, against a class average of 24.2 MPG.
Closest more-efficient alternatives in the same class: Bentley Continental GT Convertible (18), BMW 650ci (18), BMW M4 Competition M xDrive Convertible (18), BMW M4 Competition M xDrive Coupe (18), Infiniti J30 (18).
Tailpipe CO₂ is rated at 517 grams per mile, which works out to roughly 7.8 tonnes a year at 15,000 miles.
Questions
What MPG does the BMW M8 Competition Coupe get?
The 2025 BMW M8 Competition Coupe is rated at 17 MPG combined by the EPA — 15 city and 22 highway. Across all 5 model years in the database it averages 17 MPG, ranging from 17 to 17 depending on year and trim.
How much does a BMW M8 Competition Coupe cost in fuel per year?
At 17 MPG and 15,000 miles a year, it burns about 882 gallons — roughly $2824 a year with fuel at $3.20 a gallon, or $0.188 per mile. The EPA's own published annual figure for the 2025 model is $4550.
Has the BMW M8 Competition Coupe become more efficient over time?
Barely. It sits at 17 MPG today against 17 in 2020 — essentially flat across 5 model years, with efficiency gains offset by weight and power creep.
Is the BMW M8 Competition Coupe efficient for its class?
It ranks 207 of 229 in the Subcompact Cars class on current figures, against a class average of 24.2 MPG. That is 7.2 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.