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2002 Audi A6 Gas Tank Size & Fuel Capacity

Sedan 6 trims listed 2 fuel-system recalls ← 2001 2003 →

Fuel tank capacity

18.5–21.7gal · 70–82 L

The 2002 Audi A6 has a fuel tank capacity of 18.5 to 21.7 gallons (70–82 liters), depending on the trim. The most common size is 18.5 gallons, used on 5 trims.

A full tank is good for roughly 407–499 highway miles or 278–326 miles around town, going by the EPA ratings.

21.7 gal · Bigger than 69% of 2002 models we list.

Highway range
407–499 mi
City range
278–326 mi
Fuel
Premium unleaded (required)
EPA combined
18–19 MPG
EPA size class
Midsize Cars

2002 Audi A6 fuel tank capacity by trim

What changes the tank sizeTap an option to filter the table

Drive
Engine

All 6 trims

MPG and range are city / highway.

TrimEngineDrive Tank MPG city / hwy Range city / hwy
2.7T quattro AWD 4dr Sedan 2.7L 6cyl Turbo 5A · AWD MPG 16 / 23Range 296 / 426 mi 2.7L 6cyl Turbo 5A AWD 18.5 gal70 L 16 / 23 296 / 426 mi
2.7T quattro AWD 4dr Sedan 2.7L 6cyl Turbo 6M · AWD MPG 15 / 22Range 278 / 407 mi 2.7L 6cyl Turbo 6M AWD 18.5 gal70 L 15 / 22 278 / 407 mi
3.0 Avant quattro AWD 4dr Wagon 3.0L 6cyl 5A · AWD MPG 15 / 23Range 278 / 426 mi 3.0L 6cyl 5A AWD 18.5 gal70 L 15 / 23 278 / 426 mi
3.0 Fwd 4dr Sedan 3.0L 6cyl CVT · FWD MPG 17 / 23Range 315 / 426 mi 3.0L 6cyl CVT FWD 18.5 gal70 L 17 / 23 315 / 426 mi
3.0 quattro AWD 4dr Sedan 3.0L 6cyl 5A · AWD MPG 15 / 23Range 278 / 426 mi 3.0L 6cyl 5A AWD 18.5 gal70 L 15 / 23 278 / 426 mi
4.2 quattro AWD 4dr Sedan 4.2L 8cyl 5A · AWD MPG 15 / 23Range 326 / 499 mi 4.2L 8cyl 5A AWD 21.7 gal82 L 15 / 23 326 / 499 mi

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 2002 Audi A6 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 18 MPG, a full 18.5-gallon tank covers about 333 miles.

GaugeGallonsHighway milesCity miles
Full18.5426278
3/413.9319208
1/29.3213139
1/44.610669
1/82.35335

Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 45 full tanks.

In real driving: owners who log fill-ups at fueleconomy.gov average 20.2 MPG in the A6 (7 drivers), about 374 miles on a full 18.5-gallon tank.

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
18–19 MPG
Tailpipe CO2
468–494 g/mi
Source
EPA ratings

What it costs to fill up a 2002 Audi A6

$97.68 to fill the 18.5-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.

TankFuelUS avg / galFrom emptyFrom 1/4 tank
18.5 galPremium$5.28$97.68$73.26
21.7 galPremium$5.28$114.58$85.93

By region, 18.5-gallon tank

RegionPremium / galFill from empty
East Coast$4.93$91.20
Midwest$5.37$99.34
Gulf CoastLowest$4.57$84.55
Rocky Mountain$5.12$94.72
West Coast$6.08$112.48
CaliforniaHighest$6.36$117.66

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

  • 18.5-gallon tank$97.68
  • 21.7-gallon tank$114.58
  • A year of driving (15,000 mi)$4,400

Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.

A6 tank size in other years

The 2002 A6 uses the same 18.5–21.7 gal tank sizes as every A6 since 2000.

Model yearTankLongest highway range
2007 A6 21.1 gal 570 mi
2006 A6 21.1 gal 570 mi
2005 A6 21.1 gal 506 mi
2004 A6 18.5–21.7 gal 477 mi
2003 A6 18.5–21.7 gal 499 mi
2002 A6 18.5–21.7 gal 499 mi
2001 A6 18.5–21.7 gal 499 mi
2000 A6 18.5–21.7 gal 477 mi
1999 A6 18.5 gal 463 mi
1998 A6 18.5 gal 463 mi
1997 A6 19.8–21.1 gal 485 mi
Audi A6 fuel tank by model yearSmallest tank Larger tank options
19951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026
← 2001 Audi A6 Every A6 year 2003 Audi A6 →

2002 Audi A6 vs similar 2002 sedans

At 21.7 gallons, the A6's largest tank ranks second of the seven 2002 sedans compared here. The Lexus LS 430 carries the most (22.2 gal) and the Acura RL the least (18.0 gal).

2002 modelTankLongest highway range
Lexus LS 430 22.2 gal 511 mi
Audi A6 18.5–21.7 gal 499 mi
INFINITI Q45 21.4 gal 492 mi
Mercedes-Benz E-Class 18.5–21.1 gal 549 mi
Cadillac Seville 18.5 gal 463 mi
Jaguar S-Type 18.4 gal 423 mi
Acura RL 18.0 gal 396 mi

Other 2002 sedans of a similar size, one model per brand.

2002 Audi A6 fuel system recalls

NHTSA lists 2 fuel-system recalls for the 2002 Audi A6, out of 4 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.

Storage · Tank assemblyMay 3, 2011 · NHTSA 11V267000 · Volkswagen Of America, Inc · 5,992 vehicles

Volkswagen is recalling certain model year 2001-2004 audi a6, model year 2002-2003 s6 and model year 2003 rs6 vehicles equipped with 4.2l engines and manufactured from june 19, 2001, through june 8, 2004. The aging of the plastic material in the fuel tank rollover valve combined with bending stress from the aluminum ventilation line to the rollover valve nipple may lead to cracking of the nipple. If this happens, a fuel leak may result.

Risk and remedy

Risk: A fuel leak in the presence of an ignition source could lead to a vehicle fire.

Remedy: Dealers will reinforce the nipple on the rollover valve to prevent leakage or repair the cracking at the nipple. The recall is expected to begin during june 2011. Owners may contact audi at 1-800-822-2834.

Storage · Tank assemblyApr 8, 2008 · NHTSA 08V157000 · Volkswagen Of America, Inc · 68,240 vehicles

Volkswagen is recalling 68,240 my 2001-2004 audi a6 quattro vehicles equipped with 2.7l, 2.8l, or 3.0l engines and my 2001-2005 allroad quattro vehicles equipped with 2.7l or 4.2l engines. The aging of the plastic material in the fuel tank rollover valve combined with bending stress from the aluminum ventilation line to the rollover valve nipple may lead to cracking of the nipple. If this happens, a fuel leak may result.

Risk and remedy

Risk: A fuel leak in the presence of an ignition source could lead to a vehicle fire.

Remedy: Dealers will reinforce the nipple on the rollover valve to prevent leakage or repair the cracking at the nipple. The recall began on june 27, 2008. Owners may contact audi at 1-800-822-2834.

All Audi fuel recalls Look up your tank by VIN

Frequently asked questions

What is the fuel tank capacity of the 2002 Audi A6?

The 2002 Audi A6 holds between 18.5 and 21.7 gallons, depending on the trim. 18.5 gallons is the usual size; the 21.7-gallon tank comes on the 4.2 quattro AWD 4dr Sedan (4.2L 8cyl 5A).

How many gallons and liters does the 2002 Audi A6 gas tank hold?

The 2002 Audi A6 tank holds 70–82 liters, or 18.5–21.7 gallons in US gallons.

Which 2002 Audi A6 has the biggest gas tank?

The 21.7-gallon tank is on the 4.2 quattro AWD 4dr Sedan. The smallest tank, 18.5 gallons, is on the 2.7T quattro AWD 4dr Sedan.

Does AWD change the 2002 Audi A6 gas tank?

Yes. AWD: 18.5–21.7 gal; FWD: 18.5 gal.

How far can a 2002 Audi A6 go on a full tank?

About 407–499 miles on the highway and 278–326 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 2002 Audi A6 go on a quarter tank?

About 106 highway miles or 69 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.

How many miles does a 2002 Audi A6 really get on a tank?

Drivers who log their fill-ups at fueleconomy.gov average 20.2 MPG in the 2002 Audi A6 (7 drivers), which works out to about 374 miles on a full 18.5-gallon tank.

What gas does the 2002 Audi A6 take?

Premium unleaded (required). The label inside the fuel door confirms it for your car.

How much does it cost to fill up a 2002 Audi A6?

At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 18.5-gallon tank from empty costs $97.68. It ranges from $84.55 in the Gulf Coast to $117.66 in California.

How much does a full tank of gas weigh in a 2002 Audi A6?

About 135 pounds for the 21.7-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.

Does the 2002 Audi A6 have a bigger gas tank than the Jaguar S-Type?

Yes. The 2002 Audi A6 holds up to 21.7 gallons; the 2002 Jaguar S-Type holds up to 18.4.

Has the 2002 Audi A6 had a fuel pump or fuel system recall?

Yes. NHTSA lists 2 fuel-system recalls for the 2002 Audi A6: 11V267000 (storage · tank assembly); 08V157000 (storage · tank assembly). Check your VIN at nhtsa.gov/recalls to see if your car is affected.

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).
  • Real-world MPG: driver-reported fill-ups shared at fueleconomy.gov (My MPG).

Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.

Other 2002 Audi models

A417.4–18.5 gallons A823.7–24.2 gallons allroad quattro18.5 gallons S416.4 gallons S621.7 gallons S823.8 gallons TT14.5–16.3 gallons