1991 Audi 80 Gas Tank Size & Fuel Capacity
Fuel tank capacity
15.9–18.5gal · 60–70 L
The 1991 Audi 80 has a fuel tank capacity of 15.9 to 18.5 gallons (60–70 liters), depending on the trim. The most common size is 18.5 gallons, used on 1 trim.
A full tank is good for roughly 382–407 highway miles or 286–296 miles around town, going by the EPA ratings.
18.5 gal · Bigger than 50% of 1991 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
1991 Audi 80 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 2.3L 5cyl 5M · FWD MPG 18 / 24Range 286 / 382 mi | 2.3L 5cyl 5M | FWD | 15.9 gal60 L | 18 / 24 | 286 / 382 mi | |
| quattro 4dr Sedan AWD 2.3L 5cyl 5M · AWD MPG 16 / 22Range 296 / 407 mi | 2.3L 5cyl 5M | AWD | 18.5 gal70 L | 16 / 22 | 296 / 407 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 1991 Audi 80 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 18.5-gallon tank covers about 352 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 407 | 296 |
| 3/4 | 13.9 | 305 | 222 |
| 1/2 | 9.3 | 204 | 148 |
| 1/4 | 4.6 | 102 | 74 |
| 1/8 | 2.3 | 51 | 37 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 43 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
- 19–20 MPG
- Tailpipe CO2
- 444–468 g/mi
- Source
- EPA ratings
What it costs to fill up a 1991 Audi 80
$78.99 to fill the 18.5-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 15.9 gal | Regular | $4.27 | $67.89 | $50.92 |
| 18.5 gal | Regular | $4.27 | $78.99 | $59.25 |
By region, 18.5-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $74.37 |
| Midwest | $4.27 | $78.99 |
| Gulf CoastLowest | $3.70 | $68.45 |
| Rocky Mountain | $4.46 | $82.51 |
| West Coast | $5.42 | $100.27 |
| CaliforniaHighest | $5.89 | $108.96 |
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
- 15.9-gallon tank$67.89
- 18.5-gallon tank$78.99
- A year of driving (15,000 mi)$3,371
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
80 tank size in other years
The 1991 80 uses the same 15.9–18.5 gal tank sizes as the 1990 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1992 80 | 15.9–18.5 gal | 407 mi |
| 1991 80 | 15.9–18.5 gal | 407 mi |
| 1990 80 | 15.9–18.5 gal | 445 mi |
1991 Audi 80 vs similar 1991 sedans
The 80 has the largest tank of the four 1991 sedans compared here, 18.5 gallons against 16.4 for the BMW 3 Series.
| 1991 model | Tank | Longest highway range |
|---|---|---|
| Audi 80 | 15.9–18.5 gal | 407 mi |
| BMW 3 Series | 14.5–16.4 gal | 363 mi |
| Lexus ES 250 | 15.9 gal | 366 mi |
| Mercedes-Benz 190-Class | 14.5 gal | 377 mi |
Other 1991 sedans of a similar size, one model per brand.
1991 Audi 80 fuel system recalls
None of the 2 recalls NHTSA lists for the 1991 Audi 80 involve the fuel system.
1991 Audi 80 fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 1991 Audi 80, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 1991 Audi 80?
The 1991 Audi 80 holds between 15.9 and 18.5 gallons, depending on the trim. 18.5 gallons is the usual size; the smaller 15.9-gallon tank is on the 4dr Sedan.
How many gallons and liters does the 1991 Audi 80 gas tank hold?
The 1991 Audi 80 tank holds 60–70 liters, or 15.9–18.5 gallons in US gallons.
Which 1991 Audi 80 has the biggest gas tank?
The 18.5-gallon tank is on the quattro 4dr Sedan AWD. The smallest tank, 15.9 gallons, is on the 4dr Sedan.
Does AWD change the 1991 Audi 80 gas tank?
Yes. FWD: 15.9 gal; AWD: 18.5 gal.
How far can a 1991 Audi 80 go on a full tank?
About 382–407 miles on the highway and 286–296 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 1991 Audi 80 go on a quarter tank?
About 102 highway miles or 74 in town from the 18.5-gallon tank, which has roughly 4.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 1991 Audi 80 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1991 Audi 80?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 18.5-gallon tank from empty costs $78.99. It ranges from $68.45 in the Gulf Coast to $108.96 in California.
How much does a full tank of gas weigh in a 1991 Audi 80?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 1991 Audi 80 have a bigger gas tank than the BMW 3 Series?
Yes. The 1991 Audi 80 holds up to 18.5 gallons; the 1991 BMW 3 Series holds up to 16.4.
Has the 1991 Audi 80 had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 1991 Audi 80 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.