Against 283 other V6 cars rated 2023–2025, the RS 5 trails their 21.1 mpg average by 1.1 mpg, about $100 a year. Averaged over the years each was sold, the most economical engine since 2013, the 2.9L 6-cyl (2018–2025), does 20.9 mpg and the thirstiest, the 4.2L 8-cyl (2013–2015), 18: $296 a year apart.
Every Audi RS 5 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 | 18 / 25.6 | 2018–2025 | $1,837 | |
| 4.2L 8-cyl | 16 / 23 | 2013–2015 | $2,133 |
What that actually costs
Against its rivals in the same model years, the BMW M4 gets 19 mpg, the BMW M2 19 mpg and the Bentley Continental 18.3 mpg, next to 20 mpg for the 2025 RS 5. The RS 5 is the cheapest of them to run: $178 a year less than the Bentley Continental.
| Measure | Value |
|---|---|
| Cost per mile (2025) | $0.160 |
| Fuel per year | $1,920 |
| Fuel over five years | $9,600 |
| Against other V6 cars, 2023–2025 | +$100 a year |
| EPA's own estimate | $3,865 a year |
City or highway — who is this car for
The 2025 Audi RS 5 gives up 7 mpg in town: 25 on the highway against 18 in the city, $597 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2025) | 18 mpg | $2,133 a year if you only drive in town |
| Highway | 25 mpg | $1,536 a year if you mostly commute |
| Gap | +7 mpg (39%) | Wide — this car dislikes traffic |
How the RS 5 changed over the years
The RS 5 peaked in 2024 at 21 mpg (18 city, 25 highway) and was at its thirstiest in 2015 at 18 — 3 mpg apart, or $304 a year in fuel between buying one year and the other. The 2025 car does 20.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2025 | 18 / 25 | 1 | $1,920 | |
| 2024 | 18 / 25 | 1 | $1,829 | |
| 2023 | 18 / 26 | 1 | $1,829 | |
| 2022 | 18 / 25 | 1 | $1,829 | |
| 2021 | 18 / 25 | 1 | $1,829 | |
| 2019 | 18 / 27 | 1 | $1,829 | |
| 2018 | 18 / 26 | 1 | $1,829 | |
| 2015 | 16 / 23 | 1 | $2,133 | |
| 2014 | 16 / 23 | 1 | $2,133 | |
| 2013 | 16 / 23 | 1 | $2,133 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 10 EPA ratings of the Audi RS 5 — 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 $3,865. Full method.
Frequently asked questions
What mpg does the 2025 Audi RS 5 get?
20 mpg combined, 18 city and 25 highway, per EPA. Across every year since 2013 the RS 5 has averaged 20 mpg.
Is the 2025 RS 5 more efficient than the 2024?
No: 20 against 21 mpg combined, about $91 a year more to run.
Which RS 5 year has the best gas mileage?
The 2024, at 21 mpg combined (18 city, 25 highway).
Does the RS 5 get better gas mileage than the BMW M4?
Yes: 20 mpg for the 2025 RS 5 against 19 for the 2026 BMW M4, about $101 a year less to run.
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