BMW · Compact cars · Electric
BMW i4: MPG and annual fuel cost, 2026
At 118 MPGe combined, the BMW i4 sits 84 MPGe above the compact cars median of 34, which makes it 2nd of 21 compact cars, in the top quarter, ahead of 95% of the others.
- 118MPGe combined2nd of 21 in class
- $650a year in fuel2nd of 21 in class
- 0g/mile CO2
Where it stands
Compared only with the electric models of its class it is 2nd of 7 electric compact cars, in the top quarter, ahead of 83% of the others. The median of that narrower group is 93 MPGe, against 34 MPGe for all compact cars together.
Across every class it is 12th of 66 electric models, in the top quarter, ahead of 83% of the others.
BMW has 23 models in the 2026 data. This one ranks 1st of them on combined rating, against a make median of 28 MPGe.
In its class, just ahead of it is the Mercedes-Benz CLA-Class Electric at 126 MPGe and just behind it is the BMW i5 at 110 MPGe.
Electric models use no fuel and have no tailpipe CO2. Efficiency is given in MPGe, the miles driven on 33.7 kilowatt-hours of electricity, which is the energy in one gallon of gasoline. The annual cost is electricity at $0.15 per kWh.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and electricity at $0.15 per kWh, fuelling the most efficient version comes to about $650 a year. That is $1,300 less than the compact cars median of $1,950.
It has no tailpipe emissions, so the CO2 column is zero; the emissions from making the electricity are not part of this figure.
Rated versions
It does better in town than on the road: 121 in the city against 115 on the highway, a gap of 6. 7 versions are rated for 2026. The most efficient, i4 eDrive40 Gran Coupe (18 inch wheels): electric motor, Automatic (A1), RWD, gets 118 MPGe; the least efficient listed, i4 M60 xDrive Gran Coupe (20 inch Wheels): electric motor, Automatic (A1), AWD, gets 81 MPGe, a gap of 37 MPGe. With the file's assumptions that gap is worth about $300 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile | Electric range |
|---|---|---|---|---|---|---|
| i4 eDrive40 Gran Coupe (18 inch wheels): electric motor, Automatic (A1), RWD | 118 | 121 | 115 | $650 | 0 | 333 |
| i4 eDrive35 Gran Coupe (19 inch Wheels): electric motor, Automatic (A1), RWD | 109 | 113 | 105 | $700 | 0 | 251 |
| i4 eDrive40 Gran Coupe (19 inch Wheels): electric motor, Automatic (A1), RWD | 108 | 112 | 105 | $700 | 0 | 307 |
| i4 xDrive40 Gran Coupe (18 inch Wheels): electric motor, Automatic (A1), AWD | 101 | 99 | 103 | $750 | 0 | 287 |
| i4 M60 xDrive Gran Coupe (19 inch Wheels): electric motor, Automatic (A1), AWD | 98 | 99 | 96 | $750 | 0 | 278 |
| i4 xDrive40 Gran Coupe (19 inch Wheels): electric motor, Automatic (A1), AWD | 94 | 93 | 95 | $800 | 0 | 268 |
| i4 M60 xDrive Gran Coupe (20 inch Wheels): electric motor, Automatic (A1), AWD | 81 | 82 | 80 | $950 | 0 | 232 |
Year by year
The BMW i4 is in the data for 5 of the 8 model years from 2019 to 2026. Its best combined rating went from 109 in 2022 to 118 MPGe in 2026, up 9 MPGe. The highest figure came in 2024, at 120. The number of rated versions grew from 4 to 7. Fuel cost for the best version is $650 in the latest data against $700 in 2022, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 7 | 118 | 81 | $650 | 0 | 34 |
| 2025 | 8 | 116 | 80 | $650 | 0 | 30.5 |
| 2024 | 8 | 120 | 80 | $650 | 0 | 30 |
| 2023 | 6 | 113 | 80 | $650 | 0 | 29 |
| 2022 | 4 | 109 | 80 | $700 | 0 | 30 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| BMW i5 | Electric | 110 | $700 | 2026 |
| Mercedes-Benz CLA-Class Electric | Electric | 126 | $600 | 2026 |
| Porsche Taycan | Electric | 93 | $800 | 2026 |
| Audi RS e-tron | Electric | 84 | $900 | 2026 |
| Rolls-Royce Spectre | Electric | 77 | $1,000 | 2026 |
Compare and rank
Rankings: Compact cars, Electric, BMW, Electric compact cars.
Data: US EPA and DOE, as prepared in methods and data.