Fuel economy & running costsHybrid
#272 of 2,720 · BMW cars
2025 BMWX4 M40i
Small Sport Utility Vehicle 4WD · All-Wheel Drive · 3.0 L 6-cyl turbo
23MPGcombined
22city
26highway
A year of fuel$3,550
CO₂ from the tailpipe377 g/mi
Figures from the EPA label (fueleconomy.gov), the same as on the car's window sticker.
Against the 289 hybrid cars
Bars are scaled to the best in the list; the mark shows the list average. Lower is better for fuel cost; higher is better for the rest. All figures are the EPA's.
Summary
2025 BMW X4 M40i by BMW. The figures below are from US EPA fueleconomy.gov, with the page each one came from.
Details
- Model year
- 2025fueleconomy.gov · 3 Oct 2026
Efficiency
- Combined MPG
- 23fueleconomy.gov · 3 Oct 2026
- City MPG
- 22fueleconomy.gov · 3 Oct 2026
- Highway MPG
- 26fueleconomy.gov · 3 Oct 2026
Running cost
- Annual fuel cost
- $3,550fueleconomy.gov · 3 Oct 2026
- CO₂ (tailpipe)
- 377 g/mifueleconomy.gov · 3 Oct 2026
Car
- Body
- SUVfueleconomy.gov · 3 Oct 2026
- EPA class
- Small Sport Utility Vehicle 4WDfueleconomy.gov · 3 Oct 2026
- Drive
- All-Wheel Drivefueleconomy.gov · 3 Oct 2026
Powertrain
- Engine
- 3.0 L 6-cyl turbofueleconomy.gov · 3 Oct 2026
- Transmission
- Automatic (S8)fueleconomy.gov · 3 Oct 2026
- Fuel
- Gasolinefueleconomy.gov · 3 Oct 2026
More BMW cars
See the list
#1 2027 · BMW 228 Gran Coupe 31Combined MPG $2,650Fuel / year #2 2027 · BMW 228 xDrive Gran Coupe 30Combined MPG $2,750Fuel / year 
#3 2027 · BMW 430i Convertible 30Combined MPG $2,750Fuel / year #4 2027 · BMW 430i Coupe 31Combined MPG $2,650Fuel / year #5 2027 · BMW 430i Gran Coupe 30Combined MPG $2,750Fuel / year #6 2027 · BMW 430i xDrive Convertible 28Combined MPG $2,950Fuel / year Where it ranks on CarCody
- BMW Cars: Every Model and Year With MPG2720 listed
- Most Fuel-Efficient SUVs in 2026#219 of 479
- Best Hybrid Cars in 2026#183 of 289
Sources
- fueleconomy.gov/feg/noframes/48080.shtml· checked 3 Oct 2026