Subcompact cars · Gasoline · model year 2026
BMW 8 Series vs Ford Mustang
Model year 2026 ratings are close: 26 MPG for the Ford Mustang and 24 for the BMW 8 Series, a difference of 2.
Side by side
| Measure | BMW 8 Series | Ford Mustang |
|---|---|---|
| Combined fuel economy (best version) | 24 MPG | 26 MPG |
| City | 21 MPG | 22 MPG |
| Highway | 29 MPG | 33 MPG |
| Annual fuel cost | $3,400 | $2,600 |
| Tailpipe CO2 | 368 g/mile | 341 g/mile |
| Lowest rated version | 19 MPG | 12 MPG |
| Rated versions | 9 | 6 |
| Rank in class (best combined rating) | 9th of 13 | 7th of 13 |
| Class | Subcompact cars | Subcompact cars |
| Powertrain | Gasoline | Gasoline |
Better figure in bold; each model's most efficient version.
Fuel economy and cost
The two use different fuels (premium gasoline and regular gasoline), so the price per unit differs. Under the file's assumptions the Ford Mustang costs about $2,600 a year and the BMW 8 Series about $3,400, a difference of $800.
Where each one ranks
Within their class the BMW 8 Series is 9th of 13 subcompact cars, in the lower half. The Ford Mustang is tied for 7th of 13 subcompact cars, in the lower half.
The BMW 8 Series has 9 rated versions, from 19 to 24 MPG. The Ford Mustang has 6, from 12 to 26 MPG. For the most efficient versions, the BMW 8 Series is rated 8 higher on the highway (29 against 21), while the Ford Mustang is rated 11 higher on the highway (33 against 22).
Their lineups meet at 19 MPG: M850i xDrive Convertible: 4.4 L, 8 cyl, Automatic (S8), AWD for the BMW 8 Series and Mustang: 5.0 L, 8 cyl, Automatic (S10), RWD for the Ford Mustang.
Ratings by model year
Both models are in the data for 8 model years, 2019 to 2026. The BMW 8 Series has the higher best rating in 0 of them and the Ford Mustang in 5, with 3 level. The widest gap, 5 MPG, was in 2019, when the Ford Mustang led.
| Model year | BMW 8 Series | Ford Mustang | Gap |
|---|---|---|---|
| 2026 | 24 | 26 | -2 |
| 2025 | 24 | 26 | -2 |
| 2024 | 24 | 26 | -2 |
| 2023 | 24 | 25 | -1 |
| 2022 | 25 | 25 | level |
| 2021 | 25 | 25 | level |
| 2020 | 25 | 25 | level |
| 2019 | 20 | 25 | -5 |