2008 Audi S5 Gas Tank Size & Fuel Capacity
Fuel tank capacity
16.9gal · 64 L
The 2008 Audi S5 has a fuel tank capacity of 16.9 gallons (64 liters) on every trim.
A full tank is good for roughly 355–372 highway miles or 237–270 miles around town, going by the EPA ratings.
16.9 gal · Smaller than 73% of 2008 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Pump & gauge parts
- FAQ
2008 Audi S5 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| quattro 2dr Coupe AWD 4.2L 8cyl 6A · AWD MPG 16 / 22Range 270 / 372 mi | 4.2L 8cyl 6A | AWD | 16.9 gal64 L | 16 / 22 | 270 / 372 mi | |
| quattro 2dr Coupe AWD 4.2L 8cyl 6M · AWD MPG 14 / 21Range 237 / 355 mi | 4.2L 8cyl 6M | AWD | 16.9 gal64 L | 14 / 21 | 237 / 355 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 2008 Audi S5 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 19 MPG, a full 16.9-gallon tank covers about 321 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 16.9 | 372 | 270 |
| 3/4 | 12.7 | 279 | 203 |
| 1/2 | 8.5 | 186 | 135 |
| 1/4 | 4.2 | 93 | 68 |
| 1/8 | 2.1 | 46 | 34 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 47 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
- 16–19 MPG
- Tailpipe CO2
- 468–555 g/mi
- Gas guzzler tax
- Yes
- Source
- EPA ratings
What it costs to fill up a 2008 Audi S5
$89.23 to fill the 16.9-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 |
|---|---|---|---|---|
| 16.9 gal | Premium | $5.28 | $89.23 | $66.92 |
By region, 16.9-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $83.32 |
| Midwest | $5.37 | $90.75 |
| Gulf CoastLowest | $4.57 | $77.23 |
| Rocky Mountain | $5.12 | $86.53 |
| West Coast | $6.08 | $102.75 |
| CaliforniaHighest | $6.36 | $107.48 |
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
- 16.9-gallon tank$89.23
- A year of driving (15,000 mi)$4,168
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
S5 tank size in other years
2008 is the first S5 model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2013 S5 | 16.9 gal | 473 mi |
| 2012 S5 | 16.9 gal | 439 mi |
| 2011 S5 | 16.6–16.9 gal | 439 mi |
| 2010 S5 | 16.6–16.9 gal | 439 mi |
| 2009 S5 | 16.9 gal | 406 mi |
| 2008 S5 | 16.9 gal | 372 mi |
2008 Audi S5 vs similar 2008 coupes
At 16.9 gallons, the S5's largest tank ranks second of the three 2008 coupes compared here. The INFINITI G37 carries the most (20.0 gal) and the BMW 3 Series the least (16.1 gal).
| 2008 model | Tank | Longest highway range |
|---|---|---|
| INFINITI G37 | 20.0 gal | 520 mi |
| Audi S5 | 16.9 gal | 372 mi |
| BMW 3 Series | 16.1 gal | 451 mi |
Other 2008 coupes of a similar size, one model per brand.
2008 Audi S5 fuel pump and gauge parts
These are the part numbers the makers list for the 2008 Audi S5. Check the fuel system recalls first: recall repairs are free.
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Frequently asked questions
What is the fuel tank capacity of the 2008 Audi S5?
The 2008 Audi S5 holds 16.9 gallons (64 liters) on every trim we list.
How many gallons and liters does the 2008 Audi S5 gas tank hold?
The 2008 Audi S5 tank holds 64 liters, or 16.9 gallons in US gallons.
How far can a 2008 Audi S5 go on a full tank?
About 355–372 miles on the highway and 237–270 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 2008 Audi S5 go on a quarter tank?
About 93 highway miles or 68 in town from the 16.9-gallon tank, which has roughly 4.2 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2008 Audi S5 take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2008 Audi S5?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 16.9-gallon tank from empty costs $89.23. It ranges from $77.23 in the Gulf Coast to $107.48 in California.
How much does a full tank of gas weigh in a 2008 Audi S5?
About 105 pounds for the 16.9-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2008 Audi S5 have a bigger gas tank than the INFINITI G37?
No. The 2008 INFINITI G37 holds up to 20.0 gallons; the 2008 Audi S5 holds up to 16.9.
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).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.