Audi RS 5 Fuel Economy (MPG)
What is the real-world gas mileage of a 2018 Audi RS 5?
The 2018 Audi RS 5 gets up to 21 MPG combined (18 city / 26 highway) in EPA testing.
Latest model year (2018):
The Audi RS 5 gets up to 21 MPG combined (18 city / 26 highway) in the Auto (AM-S8), 6 cyl, 2.9 L trim.
Audi RS 5 MPG — All Years
| Year | Trim | Engine | Fuel | City (MPG) | Hwy (MPG) | Combined (MPG) |
|---|---|---|---|---|---|---|
| 2018 | Auto (AM-S8), 6 cyl, 2.9 L | 6 2.9L | Premium Gasoline | 18 | 26 | 21 |
| 2015Config 1 of 2 | Auto (AM-S7), 8 cyl, 4.2 L | 8 4.2L | Premium Gasoline | 16 | 23 | 18 |
| 2015Config 2 of 2 | Auto (AM-S7), 8 cyl, 4.2 L | 8 4.2L | Premium Gasoline | 16 | 22 | 18 |
Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.
Audi RS 5 data analysis
How Audi RS 5 combined fuel economy varies
Across 3 configurations recorded for the 2015 through 2018 Audi RS 5, combined fuel economy runs from 18 MPG to 21 MPG. The strongest figure belongs to the 2018 Audi RS 5 (Auto (AM-S8), 6 cyl, 2.9 L) at 21 MPG, and the weakest to the 2015 car (Auto (AM-S7), 8 cyl, 4.2 L) at 18 MPG — a spread of 17%. The narrow spread means any year of the Audi RS 5 in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.
What changed for 2018
Average combined fuel economy for the 2018 Audi RS 5 is 21 MPG, against 18 MPG for the 2015 car — it rose by 3 MPG. That is a real improvement, and it is the kind of change worth paying the newer-year premium for if this figure drives your decision.
How to read this Audi RS 5 data
This page lists every 2015 through 2018 Audi RS 5 record we hold for this measurement — 3 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.
Where these Audi RS 5 figures come from
Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Audi RS 5 record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.
Official Factory Specs vs. AutoSpecData Expert Benchmarks
The EPA highway loop never holds interstate speed. Here is what the same engine does when you sit on the cruise control.
| Cruise speed | EPA highway spec | AutoSpecData adjusted MPG | Fuel you lose |
|---|---|---|---|
| 60 mph | 26 MPG | 26 MPG | 0% |
| 65 mph | 26 MPG | 24.2 MPG | 7% |
| 70 mph | 26 MPG | 22.6 MPG | 13% |
| 75 mph | 26 MPG | 21 MPG | 19% |
| 80 mph | 26 MPG | 19.6 MPG | 25% |
Our Real-World Speed MPG Adjuster re-scales the Audi RS 5 EPA highway result with a quadratic drag term (mpg = hwy ÷ (1 + k·(v² − 60²)/60²), k = 0.55 for trucks, SUVs and vans, 0.42 for cars). Wind, roof racks, and a heavy right foot make it worse, never better.
Frequently Asked Questions About RS 5 MPG
What is the MPG of the Audi RS 5?
The Audi RS 5 gets up to 21 MPG combined (18 city / 26 highway) in the 2018 model year. Fuel economy varies by engine and trim — see the full table above for details.
Which Audi RS 5 trim has the best fuel economy?
The Auto (AM-S8), 6 cyl, 2.9 L trim offers the best combined fuel economy at 21 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.