Lexus · Compact cars · Gasoline
Lexus IS: MPG and annual fuel cost, 2026
At 22 MPG combined, the Lexus IS sits 12 MPG below the compact cars median of 34, which makes it 20th of 21 compact cars, in the bottom quarter.
- 22MPG combined20th of 21 in class
- $3,750a year in fuel20th of 21 in class
- 408g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is 8th of 9 gasoline compact cars, in the bottom quarter. The median of that narrower group is 26 MPG, against 34 MPG for all compact cars together.
Among all gasoline models of the year, regardless of size, it is tied for 102nd of 180 gasoline models, in the lower half.
Within the 16 Lexus models rated for 2026 it is 11th on combined rating; the median of the make's line-up is 24.5 MPG.
In its class, just ahead of it is the Mercedes-Benz CLA-Class at 23 MPG and just behind it is the Ferrari Purosangue at 12 MPG.
Fuel cost and CO2
The file prices the fuel for its most efficient version at about $3,750 a year, assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon. That is $1,800 more than the compact cars median of $1,950.
It emits 408 g of CO2 per mile from the tailpipe; the compact cars median is 265, a difference of 143 g/mile.
Rated versions
Its city rating is 19 and its highway rating 26: the highway figure is 7 higher. 2 versions are rated for 2026. All of them share the same combined rating of 22 MPG.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| IS 350 AWD: 3.5 L, 6 cyl, Automatic (S6), AWD | 22 | 19 | 26 | $3,750 | 408 |
| IS 350: 3.5 L, 6 cyl, Automatic (S8), RWD | 22 | 19 | 27 | $3,750 | 403 |
Year by year
The Lexus IS is in the data for 8 of the 8 model years from 2019 to 2026. Between 2019 and 2026 the best combined rating fell by 2 MPG, from 24 to 22. The highest figure came in 2021, at 25. The number of rated versions shrank from 4 to 2. Fuel cost for the best version is $3,750 in the latest data against $3,400 in 2019, 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 | 2 | 22 | 22 | $3,750 | 408 | 34 |
| 2025 | 5 | 25 | 20 | $3,300 | 356 | 30.5 |
| 2024 | 5 | 25 | 20 | $3,300 | 355 | 30 |
| 2023 | 5 | 25 | 20 | $3,300 | 355 | 29 |
| 2022 | 5 | 25 | 20 | $3,300 | 356 | 30 |
| 2021 | 4 | 25 | 22 | $3,300 | 357 | 30 |
| 2020 | 4 | 24 | 21 | $3,400 | 363 | 30 |
| 2019 | 4 | 24 | 21 | $3,400 | 360 | 30.5 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Mercedes-Benz CLA-Class | Gasoline | 23 | $3,550 | 2026 |
| Genesis G70 | Gasoline | 24 | $3,400 | 2026 |
| Cadillac CT4 | Gasoline | 26 | $3,150 | 2026 |
| Volkswagen GLI | Gasoline | 29 | $2,300 | 2026 |
| Mercedes-Benz C-Class Hybrid | Hybrid | 29 | $2,850 | 2026 |
Compare and rank
Rankings: Compact cars, Gasoline, Lexus, Gasoline compact cars.
Data: US EPA and DOE, as prepared in methods and data.