Against 332 other Hybrid cars rated 2023–2025, the S7 trails their 27.7 mpg average by 5.7 mpg, about $359 a year. Averaged over the years each was sold, the most economical engine since 2013, the 2.9L 6-cyl Hybrid (2020–2025), does 22 mpg and the thirstiest, the 4L 8-cyl (2013–2018), 20: $175 a year apart.
Every Audi S7 engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 2.9L 6-cyl Hybrid | 18.5 / 27.2 | 2020–2025 | $1,745 | |
| 4L 8-cyl | 16.8 / 26.5 | 2013–2018 | $1,920 |
What that actually costs
Against its rivals in the same model years, the Honda Accord gets 40 mpg, the Infiniti Q50 23 mpg and the Kia K4 33.5 mpg, next to 22 mpg for the 2025 S7. The S7 costs the most of them to run: $785 a year more than the Honda Accord.
| Measure | Value |
|---|---|
| Cost per mile (2025) | $0.145 |
| Fuel per year | $1,745 |
| Fuel over five years | $8,725 |
| Against other Hybrid cars, 2023–2025 | +$359 a year |
| EPA's own estimate | $3,679 a year |
City or highway — who is this car for
The 2025 Audi S7 gives up 8 mpg in town: 27 on the highway against 19 in the city, $599 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2025) | 19 mpg | $2,021 a year if you only drive in town |
| Highway | 27 mpg | $1,422 a year if you mostly commute |
| Gap | +8 mpg (42%) | Wide — this car dislikes traffic |
How the S7 changed over the years
The S7 peaked in 2025 at 22 mpg (19 city, 27 highway) and was at its thirstiest in 2018 at 18 — 4 mpg apart, or $388 a year in fuel between buying one year and the other. The biggest single-year change came in 2018: 21 to 18 mpg.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2025 | 19 / 27 | 1 | $1,745 | |
| 2024 | 19 / 26 | 1 | $1,745 | |
| 2023 | 19 / 26 | 1 | $1,745 | |
| 2022 | 18 / 28 | 1 | $1,745 | |
| 2021 | 18 / 28 | 1 | $1,745 | |
| 2020 | 18 / 28 | 1 | $1,745 | |
| 2018 | 16 / 24 | 1 | $2,133 | |
| 2017 | 17 / 27 | 1 | $1,829 | |
| 2016 | 17 / 27 | 1 | $1,829 | |
| 2015 | 17 / 27 | 1 | $1,920 | |
| 2014 | 17 / 27 | 1 | $1,920 | |
| 2013 | 17 / 27 | 1 | $1,920 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 12 EPA ratings of the Audi S7 — 2 engines across 2013–2025. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,679. Full method.
Frequently asked questions
What mpg does the 2025 Audi S7 get?
22 mpg combined, 19 city and 27 highway, per EPA. Across every year since 2013 the S7 has averaged 21 mpg.
Is the 2025 S7 more efficient than the 2024?
About the same: 22 against 22 mpg combined.
Which S7 year has the best gas mileage?
The 2025, at 22 mpg combined (19 city, 27 highway), which is also the latest model year we hold.
Does the S7 get better gas mileage than the Honda Accord?
No: 22 mpg for the 2025 S7 against 40 for the 2026 Honda Accord, about $785 a year more to run.
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