BMW M340I MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated BMW M340I model year from 1989 to 2026 — each engine and transmission with its official city, highway and combined figures. Over these years the M340I has been offered with 3.0L 6-cyl, 3.0L 4-cyl, 4.0L 8-cyl, 3.2L 6-cyl, 2.3L 4-cyl engines; the most efficient version is the 2026 (up to 29 MPG combined). Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
BMW M340I fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2026 | 29 MPG | 3.0L 6-cyl | — | — |
| 2025 | 29 MPG | 3.0L 4-cyl | — | — |
| 2024 | 26 MPG | 3.0L 6-cyl | $51,998 | 12 listings |
| 2023 | 26 MPG | 3.0L 6-cyl | — | — |
| 2022 | 26 MPG | 3.0L 6-cyl | — | — |
| 2021 | 25–26 MPG | 3.0L 6-cyl | $35,650 | 6 listings |
| 2020 | 25 MPG | 3.0L 6-cyl | $34,746 | 8 listings |
| 2018 | 20 MPG | 3.0L 6-cyl | — | — |
| 2017 | 19–20 MPG | 3.0L 6-cyl | — | — |
| 2016 | 19–20 MPG | 3.0L 6-cyl | — | — |
| 2015 | 19–20 MPG | 3.0L 6-cyl | — | — |
| 2010 | 16 MPG | 4.0L 8-cyl | — | — |
| 2009 | 16 MPG | 4.0L 8-cyl | — | — |
| 2008 | 16 MPG | 4.0L 8-cyl | — | — |
| 2006 | 17 MPG | 3.2L 6-cyl | — | — |
| 2005 | 17 MPG | 3.2L 6-cyl | — | — |
| 2004 | 17 MPG | 3.2L 6-cyl | — | — |
| 2003 | 17 MPG | 3.2L 6-cyl | — | — |
| 2002 | 17 MPG | 3.2L 6-cyl | — | — |
| 2001 | 17 MPG | 3.2L 6-cyl | — | — |
| 1999 | 20 MPG | 3.2L 6-cyl | — | — |
| 1998 | 20–21 MPG | 3.2L 6-cyl | — | — |
| 1997 | 20–21 MPG | 3.2L 6-cyl | — | — |
| 1996 | 21 MPG | 3.2L 6-cyl | — | — |
| 1995 | 20 MPG | 3.0L 6-cyl | — | — |
| 1991 | 18 MPG | 2.3L 4-cyl | — | — |
| 1990 | 18 MPG | 2.3L 4-cyl | — | — |
| 1989 | 18 MPG | 2.3L 4-cyl | — | — |
2026 BMW M340I: engines & MPG
The 2026 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 29 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 26 | 33 | 29 MPG |
| M340i Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 27 | 33 | 29 MPG |
2025 BMW M340I: engines & MPG
The 2025 M340I was EPA-rated in 2 versions (3.0L 4-cyl), with combined economy of 29 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive Sedan | 3.0L 4-cyl | Automatic (S8) | Premium | 26 | 33 | 29 MPG |
| M340i Sedan | 3.0L 4-cyl | Automatic (S8) | Premium | 27 | 33 | 29 MPG |
2024 BMW M340I: engines & MPG
The 2024 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 26 MPG. Used 2024 models currently list for a median of $51,998 on VehiSales (12 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 31 | 26 MPG |
| M340i Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 31 | 26 MPG |
2023 BMW M340I: engines & MPG
The 2023 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 26 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 32 | 26 MPG |
| M340i Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 31 | 26 MPG |
2022 BMW M340I: engines & MPG
The 2022 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 26 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 32 | 26 MPG |
| M340i Sedan | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 32 | 26 MPG |
2021 BMW M340I: engines & MPG
The 2021 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 25 to 26 MPG. Used 2021 models currently list for a median of $35,650 on VehiSales (6 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i | 3.0L 6-cyl | Automatic (S8) | Premium | 23 | 32 | 26 MPG |
| M340i xDrive | 3.0L 6-cyl | Automatic (S8) | Premium | 22 | 31 | 25 MPG |
2020 BMW M340I: engines & MPG
The 2020 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 25 MPG. Used 2020 models currently list for a median of $34,746 on VehiSales (8 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M340i xDrive | 3.0L 6-cyl | Automatic (S8) | Premium | 22 | 30 | 25 MPG |
| M340i | 3.0L 6-cyl | Automatic (S8) | Premium | 22 | 30 | 25 MPG |
2018 BMW M340I: engines & MPG
The 2018 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.0L 6-cyl | Automatic (AM-S7) | Premium | 17 | 24 | 20 MPG |
| M3 | 3.0L 6-cyl | Manual 6-spd | Premium | 17 | 25 | 20 MPG |
2017 BMW M340I: engines & MPG
The 2017 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 19 to 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.0L 6-cyl | Manual 6-spd | Premium | 17 | 26 | 20 MPG |
| M3 | 3.0L 6-cyl | Automatic (AM-S7) | Premium | 17 | 24 | 19 MPG |
2016 BMW M340I: engines & MPG
The 2016 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 19 to 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.0L 6-cyl | Manual 6-spd | Premium | 17 | 26 | 20 MPG |
| M3 | 3.0L 6-cyl | Automatic (AM-S7) | Premium | 17 | 24 | 19 MPG |
2015 BMW M340I: engines & MPG
The 2015 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy from 19 to 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.0L 6-cyl | Manual 6-spd | Premium | 17 | 26 | 20 MPG |
| M3 | 3.0L 6-cyl | Automatic (AM-S7) | Premium | 17 | 24 | 19 MPG |
2010 BMW M340I: engines & MPG
The 2010 M340I was EPA-rated in 2 versions (4.0L 8-cyl), with combined economy of 16 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 4.0L 8-cyl | Automatic (S7) | Premium | 14 | 20 | 16 MPG |
| M3 | 4.0L 8-cyl | Manual 6-spd | Premium | 14 | 20 | 16 MPG |
2009 BMW M340I: engines & MPG
The 2009 M340I was EPA-rated in 2 versions (4.0L 8-cyl), with combined economy of 16 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 4.0L 8-cyl | Automatic (S7) | Premium | 14 | 20 | 16 MPG |
| M3 | 4.0L 8-cyl | Manual 6-spd | Premium | 14 | 20 | 16 MPG |
2008 BMW M340I: engines & MPG
The 2008 M340I was EPA-rated in 2 versions (4.0L 8-cyl), with combined economy of 16 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 4.0L 8-cyl | Automatic (S7) | Premium | 14 | 20 | 16 MPG |
| M3 | 4.0L 8-cyl | Manual 6-spd | Premium | 14 | 20 | 16 MPG |
2006 BMW M340I: engines & MPG
The 2006 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 6-spd | Premium | 14 | 22 | 17 MPG |
| M3 | 3.2L 6-cyl | Automatic (S6) | Premium | 15 | 21 | 17 MPG |
2005 BMW M340I: engines & MPG
The 2005 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 6-spd | Premium | 15 | 22 | 17 MPG |
| M3 | 3.2L 6-cyl | Automatic (S6) | Premium | 15 | 21 | 17 MPG |
2004 BMW M340I: engines & MPG
The 2004 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Automatic (S6) | Premium | 15 | 21 | 17 MPG |
| M3 | 3.2L 6-cyl | Manual 6-spd | Premium | 15 | 22 | 17 MPG |
2003 BMW M340I: engines & MPG
The 2003 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Automatic (S6) | Premium | 15 | 21 | 17 MPG |
| M3 | 3.2L 6-cyl | Manual 6-spd | Premium | 15 | 22 | 17 MPG |
2002 BMW M340I: engines & MPG
The 2002 M340I was EPA-rated in 1 version (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Automatic (S6) | Premium | 15 | 21 | 17 MPG |
2001 BMW M340I: engines & MPG
The 2001 M340I was EPA-rated in 1 version (3.2L 6-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 6-spd | Premium | 15 | 22 | 17 MPG |
1999 BMW M340I: engines & MPG
The 1999 M340I was EPA-rated in 1 version (3.2L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 5-spd | Regular | 17 | 24 | 20 MPG |
1998 BMW M340I: engines & MPG
The 1998 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy from 20 to 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 5-spd | Regular | 18 | 26 | 21 MPG |
| M3 | 3.2L 6-cyl | Automatic 5-spd | Regular | 17 | 26 | 20 MPG |
1997 BMW M340I: engines & MPG
The 1997 M340I was EPA-rated in 2 versions (3.2L 6-cyl), with combined economy from 20 to 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 5-spd | Premium | 18 | 26 | 21 MPG |
| M3 | 3.2L 6-cyl | Automatic 5-spd | Premium | 17 | 26 | 20 MPG |
1996 BMW M340I: engines & MPG
The 1996 M340I was EPA-rated in 1 version (3.2L 6-cyl), with combined economy of 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.2L 6-cyl | Manual 5-spd | Premium | 18 | 26 | 21 MPG |
1995 BMW M340I: engines & MPG
The 1995 M340I was EPA-rated in 2 versions (3.0L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 3.0L 6-cyl | Manual 5-spd | Premium | 17 | 25 | 20 MPG |
| M3 | 3.0L 6-cyl | Automatic 5-spd | Premium | 17 | 26 | 20 MPG |
1991 BMW M340I: engines & MPG
The 1991 M340I was EPA-rated in 1 version (2.3L 4-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 2.3L 4-cyl | Manual 5-spd | Premium | 15 | 26 | 18 MPG |
1990 BMW M340I: engines & MPG
The 1990 M340I was EPA-rated in 1 version (2.3L 4-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 2.3L 4-cyl | Manual 5-spd | Premium | 15 | 26 | 18 MPG |
1989 BMW M340I: engines & MPG
The 1989 M340I was EPA-rated in 1 version (2.3L 4-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| M3 | 2.3L 4-cyl | Manual 5-spd | Premium | 15 | 26 | 18 MPG |
Frequently asked questions
What MPG does a BMW M340I get?
Depending on year and engine, EPA combined ratings for the M340I range from 16 to 29 MPG. The most efficient rated version is the 2026 model year.
What engines does the 2026 BMW M340I have?
The 2026 M340I was EPA-rated with 3.0L 6-cyl engines — see the 2026 table above for each version's exact city/highway figures.
Does the BMW M340I require premium gas?
Some versions do: EPA lists premium gasoline and regular gasoline depending on year and engine — check your year's table above.
Is there a hybrid or electric M340I?
Yes — the ratings above include hybrid versions; look for them in the per-year tables.
https://vehisales.com/research/fuel-economy/bmw/m340i.
See also: BMW M340I hub — live listings, prices & reliability · Used BMW M340I prices by year · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].