The 2026 BMW M340i window sticker reads 29 mpg combined (27 city, 33 highway) for the 3L 6-cyl hybrid.
The BMW M340i window sticker — build, options & years
The BMW M340i ran from 2020–2026.
For year-by-year recalls, MPG and safety, see the full BMW M340i VIN decoder.
What the BMW M340i sticker says about fuel
EPA figures for the 2026 M340i:
The label also prints an estimated $2,650 a year in fuel at 15,000 miles. In its EPA class (Compact Cars, 2026) the best M340i version ranks #6 of 17 on combined MPG (the class best is 50 mpg).
How the M340i's sticker figure changed
Combined MPG by model year, 2020 to 2026:
Combined went from 25 mpg in 2020 to 29 in 2026.
You know what it is. Find out what it's worth.
- Exact value for this VIN, adjusted for mileage
- The original window sticker and factory options
- Full research report as a PDF you can hand to a mechanic
- Decode a whole list of VINs at once
- No ads, no tracking — and much more
Recalls, MPG and safety year by year: BMW M340i VIN decoder.
M340i window sticker — every model year
ForCar has built 44 M340i window stickers from VINs so far, opened 79 times. The most requested model years are 2026, 2020 and 2021.
Any M340i from 2020–2026: the VIN carries the model year, so there is no year to pick. Other BMW models: BMW window stickers.
Other BMW window stickers
| Model | Years covered | Class | Best EPA figure |
|---|---|---|---|
| BMW M3 | Compact Cars | 29 mpg | |
| BMW X5 | Standard Sport Utility Vehicle 4WD | 27 mpg | |
| BMW X3 | Small Sport Utility Vehicle 4WD | 30 mpg | |
| BMW M4 | Subcompact Cars | 30 mpg | |
| BMW M5 | Midsize Cars | 20 mpg | |
| BMW i8 | Subcompact Cars | 28 mpg |
Where to find the VIN on a BMW M340i
- WindshieldLower-left corner, driver's side, readable from outside without opening anything.
- Door jambOn the driver's door frame of every M340i, next to the tire-pressure and build-date plate.
- DocumentsRegistration, title and insurance card — on a BMW M340i all three must show the same number.
Window sticker — frequently asked
What MPG does the BMW M340i window sticker show?
The 2026 label shows up to 29 mpg combined, #6 of 17 in its EPA class (Compact Cars). EPA puts the fuel bill at about $2,650 a year.
Which BMW M340i years do people look up most?
2026, with 9 of the 44 M340i window stickers built on ForCar, followed by 2020 and 2021.
Mark ForCar as a preferred source and our data shows up first in your Google results. One click, no account.