Compact cars · Gasoline · model year 2026
Genesis G70 vs Lexus IS
The Genesis G70 edges the Lexus IS by only 2 MPG: 24 against 22 combined in model year 2026.
Side by side
| Measure | Genesis G70 | Lexus IS |
|---|---|---|
| Combined fuel economy (best version) | 24 MPG | 22 MPG |
| City | 21 MPG | 19 MPG |
| Highway | 29 MPG | 26 MPG |
| Annual fuel cost | $3,400 | $3,750 |
| Tailpipe CO2 | 373 g/mile | 408 g/mile |
| Lowest rated version | 19 MPG | 22 MPG |
| Rated versions | 4 | 2 |
| Rank in class (best combined rating) | 18th of 21 | 20th of 21 |
| Class | Compact cars | Compact cars |
| Powertrain | Gasoline | Gasoline |
Better figure in bold; each model's most efficient version.
Fuel economy and cost
Fuel bills differ by $350 a year. The Genesis G70 comes to $3,400 and the Lexus IS to $3,750, both at 15,000 miles a year.
Where each one ranks
Within their class the Genesis G70 is 18th of 21 compact cars, in the bottom quarter. The Lexus IS is 20th of 21 compact cars, in the bottom quarter.
The Genesis G70 has 4 rated versions, from 19 to 24 MPG. The Lexus IS has 2, from 22 to 22 MPG. For the most efficient versions, the Genesis G70 is rated 8 higher on the highway (29 against 21), while the Lexus IS is rated 7 higher on the highway (26 against 19).
The two versions closest in rating are G70 AWD: 2.5 L, 4 cyl, Automatic (S8), AWD at 23 MPG and IS 350 AWD: 3.5 L, 6 cyl, Automatic (S6), AWD at 22, 1 MPG apart.
Ratings by model year
Both models are in the data for 8 model years, 2019 to 2026. The Genesis G70 has the higher best rating in 3 of them and the Lexus IS in 3, with 2 level. The widest gap, 2 MPG, was in 2026, when the Genesis G70 led.
| Model year | Genesis G70 | Lexus IS | Gap |
|---|---|---|---|
| 2026 | 24 | 22 | +2 |
| 2025 | 24 | 25 | -1 |
| 2024 | 24 | 25 | -1 |
| 2023 | 25 | 25 | level |
| 2022 | 24 | 25 | -1 |
| 2021 | 25 | 25 | level |
| 2020 | 25 | 24 | +1 |
| 2019 | 25 | 24 | +1 |