BMW Z4 M40i MPG by year — every rating on record
The BMW Z4 M40i has a combined EPA fuel economy rating for 7 model years, from 2020 to 2026. Across those years its best rated version returned 26 mpg (2020) and its thirstiest returned 22 mpg (2025). The EPA record holds 9 configurations for this nameplate, most recently a Two Seaters.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2020 | 1 | 26 mpg | 26 mpg | #8 of 60 (88th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2021 | 1 | 25 mpg | 25 mpg | #7 of 49 (88th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2022 | 1 | 25 mpg | 25 mpg | #5 of 43 (90th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2023 | 1 | 26 mpg | 26 mpg | #4 of 51 (94th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2024 | 1 | 26 mpg | 26 mpg | #5 of 40 (90th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2025 | 2 | 25 mpg | 22 mpg | #6 of 37 (86th pct) | Rear-Wheel Drive | Premium | Two Seaters |
| 2026 | 2 | 25 mpg | 22 mpg | #5 of 32 (87th pct) | Rear-Wheel Drive | Premium | Two Seaters |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The BMW Z4 M40i placed highest in 2023 at #4 of 51, and lowest in 2020 at #8 of 60. It spent 7 of its 7 ranked years in the top half of its class.
Every configuration on record
All 9 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3.0L 6-cyl Rear-Wheel Drive Manual 6-spd Premium | SIDI, turbocharged, start-stop | 19 | 26 | 22 | 522.7 | 13.5 | $3,500 | 407 | 4/10 |
| 2026 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 23 | 29 | 25 | 460.0 | 11.9 | $3,100 | 346 | 5/10 |
| 2025 | 3.0L 6-cyl Rear-Wheel Drive Manual 6-spd Premium | SIDI, turbocharged, start-stop | 19 | 26 | 22 | 522.7 | 13.5 | $3,500 | 407 | 5/10 |
| 2025 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 23 | 29 | 25 | 460.0 | 11.9 | $3,100 | 346 | 5/10 |
| 2024 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 23 | 31 | 26 | 442.3 | 11.4 | $3,000 | 338 | 5/10 |
| 2023 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 23 | 31 | 26 | 442.3 | 11.4 | $3,000 | 338 | 5/10 |
| 2022 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 22 | 29 | 25 | 460.0 | 11.9 | $3,100 | 358 | 5/10 |
| 2021 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 22 | 30 | 25 | 460.0 | 11.9 | $3,100 | 355 | 5/10 |
| 2020 | 3.0L 6-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 24 | 31 | 26 | 442.3 | 11.4 | $3,000 | 334 | 5/10 |
How the rating has moved between model years
Comparing the best-rated configuration of each year. 1 of 3 year-over-year steps improved the top rating.
| Change | Best combined | Delta | Gallons a year at the newer rating |
|---|---|---|---|
| 2020 → 2021 | 26 → 25 mpg | -1 mpg | 460 gal |
| 2022 → 2023 | 25 → 26 mpg | +1 mpg | 442 gal |
| 2024 → 2025 | 26 → 25 mpg | -1 mpg | 460 gal |
What Z4 M40i fuel costs over a year
At the EPA's 11,500 miles a year, the 2026 BMW Z4 M40i burns 460 to 523 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $1,380 | $1,568 | $188 |
| $3.50/gal | $1,610 | $1,830 | $220 |
| $4.00/gal | $1,840 | $2,091 | $251 |
EPA’s own estimate for the 2026 model year is $3,100 to $3,500 a year in fuel, or $4,250 more than the average new vehicle over five years.
How it compares with other Two Seaters
Across the 263 nameplates EPA classifies as Two Seaters, the median best combined rating is 18 mpg. At 25 mpg the BMW Z4 M40i is 7 mpg better the median, which is worth about $626 a year at $3.50 a gallon.
- All Two Seaters rankings — every nameplate in the class, best to worst.
Other BMW nameplates
Every BMW model compared → — all nameplates ranked by best combined rating, with what each one costs a year.