- Newest year: 2021
- Gas
- Hybrid
- Midsize cars
2021 Audi RS MPG & Fuel Cost
4 configurations · 17–21 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 2 of 10 midsize car configurations, MY2021. Ranked against all rated configurations, not sales-weighted.
2021 Audi RS at a glance
The 2021 Audi RS has 4 configurations in the EPA database, rated 17–21 MPG combined. The most efficient is the 5 Sportback 2.9L 6-cyl turbo AWD at 21 MPG, which costs about $3,890 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). Annual fuel cost across the configurations runs from $3,890 to $4,670, a $780 difference. The 5 Sportback 2.9L 6-cyl turbo AWD costs less to fuel than 2 of 10 midsize car configurations rated for MY2021 (class median $2,600 a year).
What the 2021 5 Sportback 2.9L 6-cyl turbo AWD costs to drive
Per month
$324
$3,890 a year ÷ 12
Per 25 miles
$6.48
Per 100 miles
$25.93
Five years
$19,450
5 × the yearly cost, prices held at today's level
vs the midsize car median
$1,290more a year
Class median $2,600 a year, MY2021
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2021 Audi RS MPG
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 5 Sportback (Most efficient) | 2.9L 6-cyl turbo | AWD | 18 | 25 | 21 | $3,890 |
| 5 | 2.9L 6-cyl turbo | AWD | 18 | 25 | 20 | $3,930 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 7 (Most efficient) | 4.0L 8-cyl turbo | AWD | 15 | 22 | 17 | $4,610 |
| 6 Avant | 4.0L 8-cyl turbo | AWD | 15 | 22 | 17 | $4,670 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the 5 Sportback 2.9L 6-cyl turbo AWD: $4,640 in California and $3,370 in Texas, a $1,270 difference.
- California $4,640
- Washington $4,360
- New York $3,840
- Florida $3,550
- Texas $3,370
Similar cars
Closest combined MPG among MY2021 midsize car models.
Generations
- 2019-2020
- 2021
- 2022-2027*
Frequently asked questions
How does the 2021 Audi RS compare with the previous generation?
The previous generation (2019-2020 Audi RS) is rated 20–23 MPG combined and costs $3,570–$3,930 a year to fuel; the 2021 model is rated 17–21 MPG and costs $3,890–$4,670 a year.
What gas mileage does the 2021 Audi RS get?
EPA rates the 2021 Audi RS at 17–21 MPG combined across 4 configurations. The most efficient, the 5 Sportback 2.9L 6-cyl turbo AWD, is rated 21 MPG combined (18 city / 25 highway). By powertrain: Gas: 20–21 MPG; Hybrid: 17 MPG.
How much does it cost to fuel a 2021 Audi RS per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the 5 Sportback 2.9L 6-cyl turbo AWD costs about $3,890 a year. Across all 4 configurations the cost runs $3,890–$4,670 a year. That is a $780 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2021 Audi RS 100 miles?
About $25.93 per 100 miles for the 5 Sportback 2.9L 6-cyl turbo AWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $25.93 and $31.13 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2021 Audi RS more efficient in the city or on the highway?
The 5 Sportback 2.9L 6-cyl turbo AWD is rated 18 city and 25 highway MPG, so it is more efficient on the highway, by 7 MPG.
How does the 2021 Audi RS compare with other midsize car configurations?
The 5 Sportback 2.9L 6-cyl turbo AWD costs about $3,890 a year to fuel, $1,290 more than the class median of $2,600, and less than 2 of 10 midsize car configurations. The comparison covers all 149 rated midsize car configurations for MY2021, not weighted by sales.
Is the 2021 Audi RS hybrid cheaper to fuel than the gas version?
No. The best hybrid (7 4.0L 8-cyl turbo AWD) is rated 17 MPG against 21 MPG for the best gas version (5 Sportback 2.9L 6-cyl turbo AWD). At premium gasoline $5.36/gal (U.S. average, Sep 2026) that is $4,610 versus $3,890 a year, $720 more.
Is the 2021 Audi RS different from the 2020 model?
The most efficient configuration moves from 23 to 21 MPG, down 2. Its annual cost goes from $3,570 to $3,890, $320 more. EPA lists 4 configurations for 2021 against 1 configuration for 2020. See the 2020 Audi RS for that year.