- Plug-in hybrid
- Electric
- Small cars
- MY2014–2021
BMW i3 MPG & Fuel Cost by Year
8 model years · 2014–2021
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
BMW i3 fuel economy at a glance
EPA has rated the BMW i3 for 8 model years, 2014 to 2021. Across those years its combined rating runs 31–39 MPG. The latest model year, 2021, has 4 configurations rated 31 MPG, 113 MPGe combined and costing $820–$1,020 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2014 is the 2016 REX 0.6L 2-cyl RWD, at 39 MPG.
BMW i3 MPG by year
| Year | Plug-in hybrid, gas only (MPG) | Electric (MPGe) | $/yr |
|---|---|---|---|
| 2019-2021 (G20) Generation page | |||
| 2021 | 31 | 113 | $820–$1,020 |
| 2020 | 31 | 113 | $820–$1,020 |
| 2019 | 31 | 113 | $820–$1,020 |
| 2014-2018 Generation page | |||
| 2018 | 35 | 112–118 | $790–$1,020 |
| 2017 | 35 | 118–124 | $740–$990 |
| 2016 | 39 | 124 | $740–$1,000 |
| 2015 | 39 | 124 | $740–$1,000 |
| 2014 | 39 | 124 | $740–$1,000 |
Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.
BMW i3 generations
2 generations between 2014 and 2021. Open one for the table of every model year and configuration.
2021 powertrain options
On electricity 100 MPGe, with 126 miles of electric range.
See plug-in hybrid configurationsMore BMW models
Frequently asked questions
What is the BMW i3's gas mileage by year?
EPA combined ratings for the BMW i3 run 31–39 MPG across model years 2014 to 2021. The latest year, 2021, is rated 31 MPG.
Which BMW i3 model year has the best gas mileage?
The 2016 BMW i3 REX 0.6L 2-cyl RWD has the highest combined rating since 2014, at 39 MPG.
How much does a BMW i3 cost to fuel per year?
For MY2021, EPA-rated configurations cost $820–$1,020 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $1,020.
Has the BMW i3's fuel economy improved over time?
No. The most efficient configuration moved from 39 MPG in 2014 to 31 MPG in 2021, 8 MPG less.
Is there a hybrid, plug-in or electric BMW i3?
Yes. Plug-in hybrid versions are rated from 2014 to 2021 (31–39 MPG); Electric versions are rated from 2014 to 2021 (112–124 MPGe).
Which BMW i3 model years have the same ratings?
EPA lists identical ratings as the previous year for 2015, 2020, 2021. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.