Audi · Midsize cars · Gasoline
Audi S5: MPG and annual fuel cost, 2026
Rated at 23 MPG combined for 2026, the Audi S5 is tied for 25th of 31 midsize cars, in the bottom quarter.
- 23MPG combinedtied 25th of 31 in class
- $3,550a year in fueltied 25th of 31 in class
- 386g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is tied for 11th of 14 gasoline midsize cars, in the bottom quarter. The median of that narrower group is 27 MPG, against 30 MPG for all midsize cars together.
Across every class it is tied for 86th of 180 gasoline models, in the lower half.
Audi has 22 models in the 2026 data. This one ranks 10th of them on combined rating, against a make median of 23 MPG.
In its class, just ahead of it is the Mercedes-Benz E-Class Plug-in hybrid at 24 MPG and just behind it is the Subaru WRX at 22 MPG.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon, fuelling the most efficient version comes to about $3,550 a year. That is $1,050 more than the midsize cars median of $2,500.
Tailpipe CO2 is 386 g/mile, 117 g/mile above the midsize cars median of 269.
Rated versions
In the city the most efficient version is rated 20 and on the highway 29, 9 better on the open road. The data lists one version for 2026: S5 Sport Sedan: 3.0 L, 6 cyl, Automatic (AM-S7), AWD.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| S5 Sport Sedan: 3.0 L, 6 cyl, Automatic (AM-S7), AWD | 23 | 20 | 29 | $3,550 | 386 |
Year by year
The Audi S5 is in the data for 8 of the 8 model years from 2019 to 2026. Its best combined rating went from 24 in 2019 to 23 MPG in 2026, down 1 MPG. The number of rated versions shrank from 3 to 1. Fuel cost for the best version is $3,550 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 | 1 | 23 | 23 | $3,550 | 386 | 30 |
| 2025 | 2 | 23 | 22 | $3,550 | 384 | 29 |
| 2024 | 3 | 24 | 22 | $3,400 | 376 | 30 |
| 2023 | 3 | 24 | 23 | $3,400 | 364 | 28 |
| 2022 | 3 | 24 | 23 | $3,400 | 363 | 28 |
| 2021 | 3 | 23 | 22 | $3,550 | 380 | 28.5 |
| 2020 | 3 | 23 | 22 | $3,550 | 393 | 28 |
| 2019 | 3 | 24 | 24 | $3,400 | 377 | 29 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Subaru WRX | Gasoline | 22 | $3,750 | 2026 |
| Mercedes-Benz E-Class Plug-in hybrid | Plug-in hybrid | 24 | $3,400 | 2026 |
| Lexus LS | Gasoline | 21 | $3,900 | 2026 |
| BMW 5 Series Plug-in hybrid | Plug-in hybrid | 25 | $3,300 | 2026 |
| Cadillac CT5 | Gasoline | 26 | $3,150 | 2026 |
Rated almost identically and covered by this page:
- Audi A5 26 MPG, $3,150 a year, 1 version, last rated 2026
- Audi A6 23 MPG, $3,550 a year, 1 version, last rated 2026
Compare and rank
Rankings: Midsize cars, Gasoline, Audi, Gasoline midsize cars.
Data: US EPA and DOE, as prepared in methods and data.