Against 344 other Hybrid cars rated 2024–2026, the RS 6 Avant trails their 28 mpg average by 12 mpg, about $1,029 a year.
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
| Measure | Value |
|---|---|
| Cost per mile (2026) | $0.200 |
| Fuel per year | $2,400 |
| Fuel over five years | $12,000 |
| Against other Hybrid cars, 2024–2026 | +$1,029 a year |
| EPA's own estimate | $4,592 a year |
City or highway — who is this car for
The 2026 Audi RS 6 Avant gives up 7 mpg in town: 21 on the highway against 14 in the city, $914 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2026) | 14 mpg | $2,743 a year if you only drive in town |
| Highway | 21 mpg | $1,829 a year if you mostly commute |
| Gap | +7 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.
| 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
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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 2026 Audi RS 6 Avant get?
16 mpg combined, 14 city and 21 highway, per EPA. Across every year since 2021 the RS 6 Avant has averaged 16.8 mpg.
Is the 2026 RS 6 Avant more efficient than the 2025?
No: 16 against 17 mpg combined, about $141 a year more to run.
Which RS 6 Avant year has the best gas mileage?
The 2025, at 17 mpg combined (14 city, 21 highway).
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