3.0T Premium quattro 4dr Sedan AWD3.0L 6cyl S/C 8A · AWD · Premium (required)MPG 19 / 28Range 376 / 554 mi
3.0L 6cyl S/C 8A
AWD
19.8 gal75 L
Premiumrequired
19 / 28
376 / 554 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 2012 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 28 MPG, a full 19.8-gallon tank covers about 554 miles.
Gauge
Gallons
Highway miles
City miles
Full
19.8
653
495
3/4
14.9
490
371
1/2
9.9
327
248
1/4
5.0
163
124
1/8
2.5
82
62
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 536 gallons, roughly 27 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.
At 19.8 gallons, the A6's largest tank ranks second of the seven 2012 sedans compared here. The INFINITI M carries the most (20.0 gal) and the Cadillac CTS the least (18.0 gal).
Other 2012 sedans of a similar size, one model per brand.
2012 Audi A6 fuel system recalls
NHTSA lists 3 fuel-system recalls for the 2012 Audi A6, out of 8 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Hoses, lines/piping, and fittingsDec 6, 2017 · NHTSA 17V781000 · Volkswagen Group Of America, Inc. · 48,693 vehicles
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2012-2014 Audi A6 and A7 vehicles. The fuel line has a compression point that can weaken, potentially resulting in a fuel leak.
Risk and remedy
Risk: A fuel leak in the presence of an ignition source, increases the risk of a fire.
Remedy: Audi will notify owners, and dealers will replace the fuel line, free of charge. The recall began February 5, 2018. Owners may contact Audi customer service at 1-888-237-2834. Volkswagen's number for this recall is 20AR.
Delivery · Hoses, lines/piping, and fittingsSep 7, 2016 · NHTSA 16V646000 · Volkswagen Group Of America, Inc. · 28,249 vehicles
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2012-2013 Audi A6 and Audi A7 vehicles. The affected vehicles have a fuel hose in the engine compartment that may degrade and leak fuel.
Risk and remedy
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Audi will notify owners, and dealers will replace the under hood fuel pump and fuel hose, free of charge. The recall began November 2016. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 24BZ.
Fuel injection system · Fuel railJan 20, 2015 · NHTSA 15V019000 · Volkswagen Group Of America, Inc. · 26,008 vehicles
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2011-2012 Audi S4, S5, Q7, 2012 Audi A6, Volkswagen Touareg Hybrid, and 2012-2013 Audi A7 vehicles. In the affected vehicles the fuel injection system may experience a fuel leak.
Risk and remedy
Risk: A fuel leak in the injection system in the presence of an ignition source, increases the risk of a fire.
Remedy: Volkswagen will notify owners, and dealers will replace the fuel rails and corresponding seals, free of charge. The recall began on March 17, 2015. Owners may contact Audi customer service at 1-800-822-2834 or Volkswagen customer service at 1-800-893-5298. Volkswagen's numbers for this recall are 24AP for Audi customers and 24BK for Volkswagen customers.
What is the fuel tank capacity of the 2012 Audi A6?
The 2012 Audi A6 holds 19.8 gallons (75 liters) on every trim we list.
How many gallons and liters does the 2012 Audi A6 gas tank hold?
The 2012 Audi A6 tank holds 75 liters, or 19.8 gallons in US gallons.
Does AWD change the 2012 Audi A6 gas tank?
No. FWD and AWD versions of the 2012 Audi A6 use the same 19.8 gal tank.
How far can a 2012 Audi A6 go on a full tank?
About 554–653 miles on the highway and 376–495 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 2012 Audi A6 go on a quarter tank?
About 163 highway miles or 124 in town from the 19.8-gallon tank, which has roughly 5.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2012 Audi A6 take?
Premium unleaded (recommended), or Premium unleaded (required), depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2012 Audi A6?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.8-gallon tank from empty costs $104.54. It ranges from $90.49 in the Gulf Coast to $125.93 in California.
How much does a full tank of gas weigh in a 2012 Audi A6?
About 123 pounds for the 19.8-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2012 Audi A6 have a bigger gas tank than the INFINITI M?
No. The 2012 INFINITI M holds up to 20.0 gallons; the 2012 Audi A6 holds up to 19.8.
Has the 2012 Audi A6 had a fuel pump or fuel system recall?
Yes. NHTSA lists 3 fuel-system recalls for the 2012 Audi A6: 17V781000 (delivery · hoses, lines/piping, and fittings); 16V646000 (delivery · hoses, lines/piping, and fittings); 15V019000 (fuel injection system · fuel rail). 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).