2021 Audi R8 Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.3–21.9gal · 73–83 L
The 2021 Audi R8 has a fuel tank capacity of 19.3 to 21.9 gallons (73–83 liters), depending on the trim. The most common size is 21.1 gallons, used on 2 trims.
A full tank is good for roughly 386–504 highway miles or 251–307 miles around town, going by the EPA ratings.
21.9 gal · Bigger than 75% of 2021 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2021 Audi R8 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
All 4 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| performance 2dr Coupe AWD 5.2L 10cyl 7AM · AWD MPG 13 / 20Range 251 / 386 mi | 5.2L 10cyl 7AM | AWD | 19.3 gal73 L | 13 / 20 | 251 / 386 mi | |
| Spyder 2dr Convertible 5.2L 10cyl 7AM · RWD MPG 14 / 23Range 295 / 485 mi | 5.2L 10cyl 7AM | RWD | 21.1 gal80 L | 14 / 23 | 295 / 485 mi | |
| performance Spyder 2dr Convertible AWD 5.2L 10cyl 7AM · AWD MPG 13 / 20Range 274 / 422 mi | 5.2L 10cyl 7AM | AWD | 21.1 gal80 L | 13 / 20 | 274 / 422 mi | |
| 2dr Coupe 5.2L 10cyl 7AM · RWD MPG 14 / 23Range 307 / 504 mi | 5.2L 10cyl 7AM | RWD | 21.9 gal83 L | 14 / 23 | 307 / 504 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2021 Audi R8 goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 17 MPG, a full 21.9-gallon tank covers about 372 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 21.9 | 504 | 307 |
| 3/4 | 16.4 | 378 | 230 |
| 1/2 | 11.0 | 252 | 153 |
| 1/4 | 5.5 | 126 | 77 |
| 1/8 | 2.7 | 63 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 882 gallons, roughly 40 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 16–17 MPG
- Tailpipe CO2
- 528–567 g/mi
- EPA greenhouse score
- 2–3 of 10
- Gas guzzler tax
- Yes
- Source
- EPA ratings
What it costs to fill up a 2021 Audi R8
$111.41 to fill the 21.1-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 19.3 gal | Premium | $5.28 | $101.90 | $76.43 |
| 21.1 gal | Premium | $5.28 | $111.41 | $83.56 |
| 21.9 gal | Premium | $5.28 | $115.63 | $86.72 |
By region, 21.1-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $104.02 |
| Midwest | $5.37 | $113.31 |
| Gulf CoastLowest | $4.57 | $96.43 |
| Rocky Mountain | $5.12 | $108.03 |
| West Coast | $6.08 | $128.29 |
| CaliforniaHighest | $6.36 | $134.20 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 19.3-gallon tank$101.90
- 21.1-gallon tank$111.41
- 21.9-gallon tank$115.63
- A year of driving (15,000 mi)$4,659
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
R8 tank size in other years
The 2021 R8 uses the same 19.3–21.9 gal tank sizes as the 2020 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 R8 | 19.3–21.1 gal | 485 mi |
| 2022 R8 | 19.3–21.9 gal | 504 mi |
| 2021 R8 | 19.3–21.9 gal | 504 mi |
| 2020 R8 | 19.3–21.9 gal | 438 mi |
| 2018 R8 | 19.3–21.9 gal | 548 mi |
| 2017 R8 | 19.3–21.9 gal | 482 mi |
| 2015 R8 | 19.8–23.8 gal | 547 mi |
| 2014 R8 | 19.8–23.8 gal | 547 mi |
2021 Audi R8 vs similar 2021 coupes
The R8 has the largest tank of the four 2021 coupes compared here, 21.9 gallons against 17.6 for the Porsche 911.
| 2021 model | Tank | Longest highway range |
|---|---|---|
| Audi R8 | 19.3–21.9 gal | 504 mi |
| Porsche 911 | 16.9–17.6 gal | 422 mi |
| Acura NSX | 15.6 gal | 343 mi |
| BMW M2 | 13.7 gal | 329 mi |
Other 2021 coupes of a similar size, one model per brand.
2021 Audi R8 fuel system recalls
None of the 1 recall NHTSA lists for the 2021 Audi R8 involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2021 Audi R8?
The 2021 Audi R8 holds between 19.3 and 21.9 gallons, depending on the trim. 21.1 gallons is the usual size; the 21.9-gallon tank comes on the 2dr Coupe (5.2L 10cyl 7AM).
How many gallons and liters does the 2021 Audi R8 gas tank hold?
The 2021 Audi R8 tank holds 73–83 liters, or 19.3–21.9 gallons in US gallons.
Which 2021 Audi R8 has the biggest gas tank?
The 21.9-gallon tank is on the 2dr Coupe. The smallest tank, 19.3 gallons, is on the performance 2dr Coupe AWD.
Does AWD change the 2021 Audi R8 gas tank?
Yes. AWD: 19.3–21.1 gal; RWD: 21.1–21.9 gal.
How far can a 2021 Audi R8 go on a full tank?
About 386–504 miles on the highway and 251–307 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2021 Audi R8 go on a quarter tank?
About 126 highway miles or 77 in town from the 21.9-gallon tank, which has roughly 5.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2021 Audi R8 take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2021 Audi R8?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 21.1-gallon tank from empty costs $111.41. It ranges from $96.43 in the Gulf Coast to $134.20 in California.
How much does a full tank of gas weigh in a 2021 Audi R8?
About 136 pounds for the 21.9-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2021 Audi R8 have a bigger gas tank than the Acura NSX?
Yes. The 2021 Audi R8 holds up to 21.9 gallons; the 2021 Acura NSX holds up to 15.6.
Has the 2021 Audi R8 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2021 Audi R8 involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Audi fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.