Photo: BMW 3 Series by Jeroen Coebergh, CC0, via Wikimedia Commons. It shows the model, not always this exact version.
BMW · model year 2025
2025 BMW M340i Sedan
Compact · Rear-Wheel Drive · Hybrid · EPA class: Compact Cars
EPA figures · 2025fueleconomy.gov
29MPG combined
27/33MPG city / highway
$2,850fuel a year
299 g CO₂ per mile 3.0 L 4-cyl turbo Automatic (S8)
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.
Where it places
- 43 Fuel-efficient compact cars
Ordered by combined MPG #43 of 86 - 104 Hybrid cars
Ordered by combined MPG #104 of 289 - 123 Fuel-efficient cars
Ordered by combined MPG #123 of 401 - 162 2025 cars and trucks
Every car of that year, A to Z #162 of 1,273 - 630 Gas and hybrid cars by fuel cost
Ordered by fuel a year #630 of 2,158 - 241 BMW cars
Every model year, newest first #241 of 2,720
Against fuel-efficient compact cars
Chart average 29 MPGBest 50 MPG
Lowest on the chart $1,350Chart average $2,882
Every figure on record
- Combined MPG
- 29 MPG
- City MPG
- 27 MPG
- Highway MPG
- 33 MPG
- Annual fuel cost
- $2,850
- Tailpipe CO₂
- 299 g per mile
- Model year
- 2025
- Body
- Car
- EPA size class
- Compact Cars
- Drive
- Rear-Wheel Drive
- Engine
- 3.0 L 4-cyl turbo
- Transmission
- Automatic (S8)
- Fuel
- Gasoline
Efficiency
Running cost
The car
Powertrain
Cars around it
Volkswagen 
2027 Volkswagen GLI
29 MPG · $2,300 fuel a year 2027 Mercedes-Benz C300
29 MPG · $2,850 fuel a year 2026 BMW 330i xDrive Sedan
29 MPG · $2,850 fuel a year 2027 BMW 430i xDrive Gran Coupe
29 MPG · $2,850 fuel a year 2026 Mazda 3 4-Door 4WD
29 MPG · $2,300 fuel a year 2026 Mercedes-Benz CLA250 4matic
29 MPG · $2,850 fuel a year 2026 BMW M340i Sedan
29 MPG · $2,850 fuel a year