Compact cars · Electric · model year 2026
BMW i4 vs Porsche Taycan
The BMW i4 is rated 25 MPGe higher than the Porsche Taycan in model year 2026, 118 against 93 combined, which is 27% more distance from the same energy.
Side by side
| Measure | BMW i4 | Porsche Taycan |
|---|---|---|
| Combined fuel economy (best version) | 118 MPGe | 93 MPGe |
| City | 121 MPG | 94 MPG |
| Highway | 115 MPG | 92 MPG |
| Annual fuel cost | $650 | $800 |
| Tailpipe CO2 | 0 g/mile | 0 g/mile |
| Lowest rated version | 81 MPGe | 77 MPGe |
| Rated versions | 7 | 17 |
| All-electric range | 333 mi | 315 mi |
| Rank in class (best combined rating) | 2nd of 21 | 4th of 21 |
| Class | Compact cars | Compact cars |
| Powertrain | Electric | Electric |
Better figure in bold; each model's most efficient version.
Fuel economy and cost
Fuel bills differ by $150 a year. The BMW i4 comes to $650 and the Porsche Taycan to $800, both at 15,000 miles a year.
Where each one ranks
Within their class the BMW i4 is 2nd of 21 compact cars, in the top quarter, ahead of 95% of the others. The Porsche Taycan is 4th of 21 compact cars, in the top quarter, ahead of 85% of the others.
The BMW i4 has 7 rated versions, from 81 to 118 MPGe. The Porsche Taycan has 17, from 77 to 93 MPGe. For the most efficient versions, the BMW i4 is rated 6 higher in the city (121 against 115), while the Porsche Taycan is rated 2 higher in the city (94 against 92).
Their lineups meet at 81 MPGe: i4 M60 xDrive Gran Coupe (20 inch Wheels): electric motor, Automatic (A1), AWD for the BMW i4 and Taycan 4 Cross Turismo: electric motor, Automatic (A2), AWD for the Porsche Taycan.
Ratings by model year
Both models are in the data for 5 model years, 2022 to 2026. The BMW i4 has the higher best rating in 5 of them and the Porsche Taycan in 0. The widest gap, 37 MPGe, was in 2024, when the BMW i4 led.
| Model year | BMW i4 | Porsche Taycan | Gap |
|---|---|---|---|
| 2026 | 118 | 93 | +25 |
| 2025 | 116 | 93 | +23 |
| 2024 | 120 | 83 | +37 |
| 2023 | 113 | 83 | +30 |
| 2022 | 109 | 83 | +26 |
| 2021 | not in data | 79 | n/a |
| 2020 | not in data | 69 | n/a |