Audi · Compact cars · Gasoline
Audi S4: MPG and annual fuel cost, 2025
The Audi S4 was last rated in the data for model year 2025, at 24 MPG combined, 6th of 7 compact cars, in the bottom quarter.
- 24MPG combined6th of 7 in class
- $3,400a year in fuel6th of 7 in class
- 377g/mile CO2
Where it stands
The compact cars rated for 2025 run from 19 to 35 MPG, with a median of 29 MPG.
Among all gasoline models of the year, regardless of size, it is tied for 12th of 24 gasoline models, in the lower half.
In its class, just ahead of it is the Acura TLX at 25 MPG and just behind it is the Mercedes-Benz AMG GT Plug-in hybrid at 19 MPG.
Fuel cost and CO2
The file prices the fuel for its most efficient version at about $3,400 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 $550 more than the compact cars median of $2,850.
It emits 377 g of CO2 per mile from the tailpipe; the compact cars median is 301, a difference of 76 g/mile.
Rated versions
Its city rating is 20 and its highway rating 29: the highway figure is 9 higher. The data lists one version for 2025: S4: 3.0 L, 6 cyl, Automatic (S8), AWD.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| S4: 3.0 L, 6 cyl, Automatic (S8), AWD | 24 | 20 | 29 | $3,400 | 377 |
Year by year
The Audi S4 is in the data for 7 of the 8 model years from 2019 to 2026. The headline rating did not move between 2019 and 2025: 24 MPG both times.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2025 | 1 | 24 | 24 | $3,400 | 377 | 30.5 |
| 2024 | 1 | 24 | 24 | $3,400 | 376 | 30 |
| 2023 | 1 | 24 | 24 | $3,400 | 364 | 29 |
| 2022 | 1 | 24 | 24 | $3,400 | 363 | 30 |
| 2021 | 1 | 23 | 23 | $3,550 | 380 | 30 |
| 2020 | 1 | 23 | 23 | $3,550 | 393 | 30 |
| 2019 | 1 | 24 | 24 | $3,400 | 371 | 30.5 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Acura TLX | Gasoline | 25 | $3,300 | 2025 |
| Audi A4 Hybrid | Hybrid | 29 | $2,850 | 2025 |
| Mercedes-Benz AMG GT Plug-in hybrid | Plug-in hybrid | 19 | $4,350 | 2025 |
| Volvo S60 Hybrid | Hybrid | 30 | $2,750 | 2025 |
| Volvo S60 Plug-in hybrid | Plug-in hybrid | 31 | $2,650 | 2025 |
Compare and rank
Rankings: Compact cars.
Data: US EPA and DOE, as prepared in methods and data.