2018 Audi R8 Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.3–21.9gal · 73–83 L
The 2018 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 21.9 gallons, used on 2 trims.
A full tank is good for roughly 425–548 highway miles or 270–307 miles around town, going by the EPA ratings.
21.9 gal · Bigger than 79% of 2018 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2018 Audi R8 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
All 5 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| V10 plus quattro 2dr Coupe AWD 5.2L 10cyl 7AM · AWD MPG 14 / 22Range 270 / 425 mi | 5.2L 10cyl 7AM | AWD | 19.3 gal73 L | 14 / 22 | 270 / 425 mi | |
| V10 plus quattro Spyder 2dr Convertible AWD 5.2L 10cyl 7AM · AWD MPG 14 / 22Range 270 / 425 mi | 5.2L 10cyl 7AM | AWD | 19.3 gal73 L | 14 / 22 | 270 / 425 mi | |
| V10 quattro Spyder 2dr Convertible AWD 5.2L 10cyl 7AM · AWD MPG 14 / 22Range 295 / 464 mi | 5.2L 10cyl 7AM | AWD | 21.1 gal80 L | 14 / 22 | 295 / 464 mi | |
| V10 RWS 2dr Coupe 5.2L 10cyl 7AM · RWD MPG 14 / 25Range 307 / 548 mi | 5.2L 10cyl 7AM | RWD | 21.9 gal83 L | 14 / 25 | 307 / 548 mi | |
| V10 quattro 2dr Coupe AWD 5.2L 10cyl 7AM · AWD MPG 14 / 22Range 307 / 482 mi | 5.2L 10cyl 7AM | AWD | 21.9 gal83 L | 14 / 22 | 307 / 482 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 2018 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 19.3-gallon tank covers about 328 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 19.3 | 425 | 270 |
| 3/4 | 14.5 | 318 | 203 |
| 1/2 | 9.7 | 212 | 135 |
| 1/4 | 4.8 | 106 | 68 |
| 1/8 | 2.4 | 53 | 34 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 882 gallons, roughly 46 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
- 17–18 MPG
- Tailpipe CO2
- 497–531 g/mi
- EPA greenhouse score
- 3 of 10
- Gas guzzler tax
- Yes
- Source
- EPA ratings
What it costs to fill up a 2018 Audi R8
$115.63 to fill the 21.9-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, 21.9-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $107.97 |
| Midwest | $5.37 | $117.60 |
| Gulf CoastLowest | $4.57 | $100.08 |
| Rocky Mountain | $5.12 | $112.13 |
| West Coast | $6.08 | $133.15 |
| CaliforniaHighest | $6.36 | $139.28 |
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 2018 R8 uses the same 19.3–21.9 gal tank sizes as the 2017 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 |
| 2012 R8 | 19.8–23.8 gal | 500 mi |
| 2011 R8 | 23.8 gal | 500 mi |
2018 Audi R8 vs similar 2018 coupes
The R8 has the largest tank of the five 2018 coupes compared here, 21.9 gallons against 19.8 for the Mercedes-Benz AMG® GT.
| 2018 model | Tank | Longest highway range |
|---|---|---|
| Audi R8 | 19.3–21.9 gal | 548 mi |
| Mercedes-Benz AMG® GT | 19.8 gal | 436 mi |
| Porsche 911 | 16.9–17.9 gal | 501 mi |
| Acura NSX | 15.6 gal | 343 mi |
| BMW M2 | 13.7 gal | 356 mi |
Other 2018 coupes of a similar size, one model per brand.
2018 Audi R8 fuel system recalls
None of the 1 recall NHTSA lists for the 2018 Audi R8 involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2018 Audi R8?
The 2018 Audi R8 holds between 19.3 and 21.9 gallons, depending on the trim. 21.9 gallons is the usual size; the smaller 19.3-gallon tank is on the V10 plus quattro 2dr Coupe AWD.
How many gallons and liters does the 2018 Audi R8 gas tank hold?
The 2018 Audi R8 tank holds 73–83 liters, or 19.3–21.9 gallons in US gallons.
Which 2018 Audi R8 has the biggest gas tank?
The 21.9-gallon tank is on the V10 RWS 2dr Coupe, V10 quattro 2dr Coupe AWD. The smallest tank, 19.3 gallons, is on the V10 plus quattro 2dr Coupe AWD.
Does AWD change the 2018 Audi R8 gas tank?
Yes. AWD: 19.3–21.9 gal; RWD: 21.9 gal.
How far can a 2018 Audi R8 go on a full tank?
About 425–548 miles on the highway and 270–307 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 2018 Audi R8 go on a quarter tank?
About 106 highway miles or 68 in town from the 19.3-gallon tank, which has roughly 4.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 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 2018 Audi R8?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 21.9-gallon tank from empty costs $115.63. It ranges from $100.08 in the Gulf Coast to $139.28 in California.
How much does a full tank of gas weigh in a 2018 Audi R8?
About 136 pounds for the 21.9-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Audi R8 have a bigger gas tank than the Mercedes-Benz AMG® GT?
Yes. The 2018 Audi R8 holds up to 21.9 gallons; the 2018 Mercedes-Benz AMG® GT holds up to 19.8.
Has the 2018 Audi R8 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2018 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.