2025 · Compact Car · Gas
2025 Audi S4 MPG & fuel economy
The 2025 Audi S4 is a compact car with one EPA-rated configuration. The most efficient version returns 24 MPG combined (20 city / 29 highway) on premium gasoline. Efficiency is unchanged from the 2024 model. Among 26 compact cars rated for 2025, it ranks 21st for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,469 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2025 Audi S4's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 8.5 km/L in the city and 12.3 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 20 | 8.5 | 11.8 |
| Highway | 29 | 12.3 | 8.1 |
| Combined | 24 | 10.2 | 9.8 |
How it ranks among 2025 Compact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
S4 MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| AWD · 3.0L 6-cyl turbo · 8-speed automatic S4 |
Gas | 20 MPG | 29 MPG | 24 MPG | — | $2,469 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 3.0L 6-cyl turbo
- Transmission
- 8-speed automatic
- Drivetrain
- AWD
- Passenger volume
- 92 cu ft
- Cargo volume
- 12 cu ft
- Tailpipe CO₂
- 377 g/mi
- EPA fuel economy score
- 5/10
- EPA greenhouse gas score
- 5/10
2025 Audi S4 vs. rivals
Compare the 2025 S4
With any other car from any year, including other S4 model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2025 Audi S4?
Up to 24 MPG combined (20 city / 29 highway).
What fuel does the 2025 Audi S4 use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2025 Audi S4?
The 2025 Audi S4's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 8.5 km/L in the city and 12.3 km/L on the highway.
How much does it cost to fuel the 2025 Audi S4 per year?
About $2,469 at 15,000 miles a year with $3.95/gal premium gas, or $16.46 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.