The Audi RS 6 Avant does 16.8 mpg combined (14.3 city, 21.5 highway), which works out to about $2,286 a year in fuel at $3.20 a gallon and 12,000 miles. Against other Hybrid cars it sits below the average of 29.8 mpg.
Every Audi RS 6 Avant engine, compared
The Audi RS 6 Avant was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 4L 8-cyl Hybrid | 14.3 / 21.5 | 2021–2026 | $2,286 |
What that actually costs
The Audi RS 6 Avant burns a gallon every 16.8 miles, so 12,000 miles takes about 714 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.190 |
| Fuel per year | $2,286 |
| Fuel over five years | $11,430 |
| Against other Hybrid cars | +$997 a year |
| EPA's own estimate | $4,592 a year |
City or highway — who is this car for
The Audi RS 6 Avant gives up 7.2 mpg the moment you leave the motorway — 21.5 out there against 14.3 in town, a 50% drop worth $899 a year. 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 | 14.3 mpg | $2,685 a year if you only drive in town |
| Highway | 21.5 mpg | $1,786 a year if you mostly commute |
| Gap | +7.2 mpg (50%) | Wide — this car dislikes traffic |
How the RS 6 Avant changed over the years
The RS 6 Avant peaked in 2025 at 17 mpg (14 city, 21 highway) and was at its thirstiest in 2026 at 16 — 1 mpg apart, or $141 a year in fuel between buying one year and the other. The 2026 car does 16. 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 | 14 / 21 | 1 | $2,400 | |
| 2025 | 14 / 21 | 1 | $2,259 | |
| 2024 | 14 / 22 | 1 | $2,259 | |
| 2023 | 14 / 21 | 1 | $2,259 | |
| 2022 | 15 / 22 | 1 | $2,259 | |
| 2021 | 15 / 22 | 1 | $2,259 |
MPG is a number. Dollars per year is the answer.
- Fuel profile built from your actual mileage and local prices
- Fuel tracker: what you really spend, month by month
- Insurance and fuel folded into 5-year cost to own
- Compare any two cars on total cost, not sticker price
- No ads, no tracking — and much more
How we count
This page rests on 6 EPA ratings of the Audi RS 6 Avant — 1 engine across 2021–2026. 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 $4,592. Full method.
Frequently asked questions
What mpg does the Audi RS 6 Avant get?
16.8 mpg combined on average — 14.3 in the city and 21.5 on the highway, per EPA ratings across 2021–2026.
How much does a Audi RS 6 Avant cost in fuel per year?
About $2,286 at 12,000 miles and $3.20 a gallon — roughly $11,430 over five years, or 0.190 dollars a mile.
Which RS 6 Avant engine is the most economical?
The 4L 8-cyl Hybrid at 16.8 mpg.
Is the RS 6 Avant good on fuel compared with similar cars?
Against other Hybrid cars it sits below the average of 29.8 mpg, computed across 1162 ratings.
Are these real-world RS 6 Avant figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Audi RS 6 Avant is $4,592 against the $2,286 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
Mark ForCar as a preferred source and our data shows up first in your Google results. One click, no account.