The Audi S3 does 25.6 mpg combined (22.5 city, 30.4 highway), which works out to about $1,500 a year in fuel at $3.20 a gallon and 12,000 miles. Engine choice matters more than you'd think: 2L 4-cyl Hybrid does 26 mpg while 2L 4-cyl does 25.6 — a difference of $23 a year. Against other 4-cyl cars it sits above the average of 25.4 mpg.
Every Audi S3 engine, compared
Picking the right version of the same car often saves more fuel than picking a different car altogether. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 2L 4-cyl Hybrid | 23 / 32 | 2024–2024 | $1,477 | |
| 2L 4-cyl | 22.5 / 30.2 | 2015–2026 | $1,500 |
What that actually costs
Miles per gallon is an abstraction; the fuel bill is not. Here it is in money, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Cost per mile | $0.125 |
| Fuel per year | $1,500 |
| Fuel over five years | $7,500 |
| Against other 4-cyl cars | −$12 a year |
| EPA's own estimate | $3,005 a year |
City or highway — who is this car for
The gap between city and highway figures tells you whom the car suits. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 22.5 mpg | $1,707 a year if you only drive in town |
| Highway | 30.4 mpg | $1,263 a year if you mostly commute |
| Gap | +7.9 mpg (35%) | Wide — this car dislikes traffic |
How the S3 changed over the years
Combined figure by model year. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2026 | 23 / 31 | 1 | $1,477 | |
| 2025 | 23 / 31 | 1 | $1,477 | |
| 2024 | 23 / 32 | 1 | $1,477 | |
| 2023 | 23 / 32 | 1 | $1,477 | |
| 2022 | 23 / 32 | 1 | $1,422 | |
| 2020 | 22 / 29 | 1 | $1,536 | |
| 2019 | 22 / 29 | 1 | $1,536 | |
| 2018 | 22 / 28 | 1 | $1,536 | |
| 2017 | 21 / 28 | 1 | $1,600 | |
| 2016 | 23 / 31 | 1 | $1,477 | |
| 2015 | 23 / 31 | 1 | $1,477 |
MPG is a number. Dollars per year is the answer.
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How we count
Fuel-economy figures come from EPA fueleconomy.gov — the same laboratory numbers printed on the window sticker. We don't adjust them; real-world consumption depends on how and where you drive.
What we add is money. Yearly cost assumes 12,000 miles at $3.20 a gallon — change either and the ranking stays, only the size of the bill moves. Cost per mile is the same figure divided out, useful when comparing a commute against a weekend car.
Frequently asked questions
What mpg does the Audi S3 get?
25.6 mpg combined on average — 22.5 in the city and 30.4 on the highway, per EPA ratings across 2015–2026.
How much does a Audi S3 cost in fuel per year?
About $1,500 at 12,000 miles and $3.20 a gallon — roughly $7,500 over five years, or 0.125 dollars a mile.
Which S3 engine is the most economical?
The 2L 4-cyl Hybrid at 26 mpg, against 25.6 for the 2L 4-cyl — a difference of about $23 a year.
Is the S3 good on fuel compared with similar cars?
Against other 4-cyl cars it sits above the average of 25.4 mpg, computed across 6877 ratings.
Are these real-world figures?
No — they are EPA laboratory ratings, the same ones on the window sticker. Real consumption depends on driving style, terrain, load and weather, and is typically a little worse.