BMW X4 M40i MPG by year — every rating on record
The BMW X4 M40i has a combined EPA fuel economy rating for 10 model years, from 2016 to 2025. Across those years its best rated version returned 23 mpg (2019) and its thirstiest returned 21 mpg (2016). The EPA record holds 10 configurations for this nameplate, most recently a Small Sport Utility Vehicle 4WD.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2016 | 1 | 21 mpg | 21 mpg | #56 of 72 (23th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2017 | 1 | 21 mpg | 21 mpg | #59 of 78 (25th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2018 | 1 | 21 mpg | 21 mpg | #73 of 94 (23th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2019 | 1 | 23 mpg | 23 mpg | #56 of 93 (40th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2020 | 1 | 23 mpg | 23 mpg | #64 of 111 (43th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2021 | 1 | 23 mpg | 23 mpg | #74 of 124 (41th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2022 | 1 | 23 mpg | 23 mpg | #101 of 151 (33th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2023 | 1 | 23 mpg | 23 mpg | #117 of 166 (30th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2024 | 1 | 23 mpg | 23 mpg | #130 of 176 (26th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
| 2025 | 1 | 23 mpg | 23 mpg | #154 of 194 (21th pct) | All-Wheel Drive | Premium | Small Sport Utility Vehicle 4WD |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The BMW X4 M40i placed highest in 2016 at #56 of 72, and lowest in 2025 at #154 of 194. It spent 0 of its 10 ranked years in the top half of its class.
Every configuration on record
All 10 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI; Mild Hybrid, turbocharged, Hybrid, start-stop | 22 | 26 | 23 | 500.0 | 12.9 | $3,350 | 377 | 5/10 |
| 2024 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI; Mild Hybrid, turbocharged, Hybrid, start-stop | 21 | 26 | 23 | 500.0 | 12.9 | $3,350 | 378 | 5/10 |
| 2023 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI; Mild Hybrid, turbocharged, Hybrid, start-stop | 21 | 26 | 23 | 500.0 | 12.9 | $3,350 | 378 | 5/10 |
| 2022 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI; Mild Hybrid, turbocharged, Hybrid, start-stop | 21 | 26 | 23 | 500.0 | 12.9 | $3,350 | 379 | 5/10 |
| 2021 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 21 | 27 | 23 | 500.0 | 12.9 | $3,350 | 379 | 5/10 |
| 2020 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 21 | 27 | 23 | 500.0 | 12.9 | $3,350 | 379 | 5/10 |
| 2019 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 20 | 27 | 23 | 500.0 | 12.9 | $3,350 | 392 | 5/10 |
| 2018 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 18 | 25 | 21 | 547.6 | 14.2 | $3,700 | 429 | 4/10 |
| 2017 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 19 | 26 | 21 | 547.6 | 14.2 | $3,700 | 418 | 4/10 |
| 2016 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 18 | 25 | 21 | 547.6 | 14.2 | $3,700 | 428 | 5/10 |
How the rating has moved between model years
Comparing the best-rated configuration of each year. 1 of 1 year-over-year steps improved the top rating.
| Change | Best combined | Delta | Gallons a year at the newer rating |
|---|---|---|---|
| 2018 → 2019 | 21 → 23 mpg | +2 mpg | 500 gal |
What X4 M40i fuel costs over a year
At the EPA's 11,500 miles a year, the 2025 BMW X4 M40i burns 500 to 500 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 | $1,500 | $1,500 | $0 |
| $3.50/gal | $1,750 | $1,750 | $0 |
| $4.00/gal | $2,000 | $2,000 | $0 |
EPA’s own estimate for the 2025 model year is $3,350 to $3,350 a year in fuel, or $5,500 more than the average new vehicle over five years.
How it compares with other Small Sport Utility Vehicle 4WD
Across the 311 nameplates EPA classifies as Small Sport Utility Vehicle 4WD, the median best combined rating is 27 mpg. At 23 mpg the BMW X4 M40i is 4 mpg below the median, which is worth about $259 a year at $3.50 a gallon.
- All Small Sport Utility Vehicle 4WD 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.