- Newest year: 2004
- Gas
- Midsize cars
2000-2004 Audi A6 MPG & Fuel Cost
5 model years · 18–21 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 4 of 10 midsize car configurations, MY2004. Ranked against all rated configurations, not sales-weighted.
2000-2004 Audi A6 at a glance
The 2000-2004 Audi A6 covers 5 model years in the EPA database (31 configurations in all), rated 18–21 MPG combined. The newest model year, 2004, costs about $3,830 a year to fuel for its most efficient version, the A6 3.0L 6-cyl FWD (21 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2001, 2002, 2003 and 2004. The best combined rating in the generation, 21 MPG, was reached in 2003 and 2004.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2000-2004 Audi A6 by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2004 | Gas | 18–21 MPG | $3,830–$4,460 | Ratings changed |
| 2003 | Gas | 18–21 MPG | $3,830–$4,460 | Ratings changed |
| 2002 | Gas | 18–19 MPG | $4,230–$4,460 | Ratings changed |
| 2001 | Gas | 18 MPG | $4,460 | Ratings changed |
| 2000 | Gas | 18 MPG | $4,460 | First year |
What the 2004 A6 3.0L 6-cyl FWD costs to drive
Per month
$319
$3,830 a year ÷ 12
Per 25 miles
$6.38
Per 100 miles
$25.53
Five years
$19,150
5 × the yearly cost, prices held at today's level
vs the midsize car median
$390more a year
Class median $3,440 a year, MY2004
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2004 Audi A6 MPG
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2003: The most efficient configuration stays at 21 MPG. Its annual cost stays at $3,830.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| A6 (Most efficient) | 3.0L 6-cyl | FWD | 18 | 25 | 21 | $3,830 |
| quattro 2.7L 6-cyl turbo 4WD Manual 6-spd | 2.7L 6-cyl turbo | 4WD | 16 | 23 | 19 | $4,230 |
| quattro 2.7L 6-cyl turbo 4WD Automatic (S5) | 2.7L 6-cyl turbo | 4WD | 16 | 23 | 19 | $4,230 |
| quattro 3.0L 6-cyl | 3.0L 6-cyl | 4WD | 16 | 23 | 19 | $4,230 |
| Avant quattro | 3.0L 6-cyl | 4WD | 16 | 23 | 19 | $4,230 |
| quattro 4.2L 8-cyl | 4.2L 8-cyl | 4WD | 15 | 22 | 18 | $4,460 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2003 Audi A6 MPG
18–21 MPG · $3,830–$4,460/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2002: The most efficient configuration moves from 19 to 21 MPG, up 2. Its annual cost goes from $4,230 to $3,830, $400 less.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| A6 (Most efficient) | 3.0L 6-cyl | FWD | 18 | 25 | 21 | $3,830 |
| quattro 2.7L 6-cyl turbo 4WD Manual 6-spd | 2.7L 6-cyl turbo | 4WD | 16 | 23 | 19 | $4,230 |
| quattro 2.7L 6-cyl turbo 4WD Automatic (S5) | 2.7L 6-cyl turbo | 4WD | 16 | 23 | 19 | $4,230 |
| quattro 3.0L 6-cyl | 3.0L 6-cyl | 4WD | 16 | 24 | 19 | $4,230 |
| Avant quattro | 3.0L 6-cyl | 4WD | 16 | 24 | 19 | $4,230 |
| quattro 4.2L 8-cyl | 4.2L 8-cyl | 4WD | 15 | 23 | 18 | $4,460 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2002 Audi A6 MPG
18–19 MPG · $4,230–$4,460/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2001: The most efficient configuration moves from 18 to 19 MPG, up 1. Its annual cost goes from $4,460 to $4,230, $230 less.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| A6 (Most efficient) | 3.0L 6-cyl | FWD | 17 | 23 | 19 | $4,230 |
| quattro 2.7L 6-cyl turbo 4WD Manual 6-spd | 2.7L 6-cyl turbo | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 2.7L 6-cyl turbo 4WD Automatic (S5) | 2.7L 6-cyl turbo | 4WD | 16 | 23 | 18 | $4,460 |
| quattro 3.0L 6-cyl | 3.0L 6-cyl | 4WD | 15 | 23 | 18 | $4,460 |
| quattro 4.2L 8-cyl | 4.2L 8-cyl | 4WD | 15 | 23 | 18 | $4,460 |
| Avant quattro | 3.0L 6-cyl | 4WD | 15 | 23 | 18 | $4,460 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2001 Audi A6 MPG
18 MPG · $4,460/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2000: The most efficient configuration stays at 18 MPG. Its annual cost stays at $4,460.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| A6 (Most efficient) | 2.8L 6-cyl | FWD | 16 | 23 | 18 | $4,460 |
| quattro 2.7L 6-cyl turbo 4WD Manual 6-spd | 2.7L 6-cyl turbo | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 2.7L 6-cyl turbo 4WD Automatic (S5) | 2.7L 6-cyl turbo | 4WD | 16 | 22 | 18 | $4,460 |
| quattro 2.8L 6-cyl | 2.8L 6-cyl | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 4.2L 8-cyl | 4.2L 8-cyl | 4WD | 15 | 23 | 18 | $4,460 |
| Avant quattro | 2.8L 6-cyl | 4WD | 15 | 22 | 18 | $4,460 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2000 Audi A6 MPG
18 MPG · $4,460/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (7)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| A6 (Most efficient) | 2.8L 6-cyl | FWD | 16 | 24 | 18 | $4,460 |
| quattro 2.7L 6-cyl turbo 4WD Automatic 5-spd | 2.7L 6-cyl turbo | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 2.7L 6-cyl turbo 4WD Manual 6-spd | 2.7L 6-cyl turbo | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 2.8L 6-cyl 4WD Automatic 5-spd | 2.8L 6-cyl | 4WD | 15 | 22 | 18 | $4,460 |
| quattro 2.8L 6-cyl 4WD Manual 5-spd | 2.8L 6-cyl | 4WD | 16 | 22 | 18 | $4,460 |
| quattro 4.2L 8-cyl | 4.2L 8-cyl | 4WD | 15 | 22 | 18 | $4,460 |
Show 0 more configurations
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Avant quattro | 2.8L 6-cyl | 4WD | 15 | 22 | 18 | $4,460 |
7 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the A6 3.0L 6-cyl FWD: $4,560 in California and $3,320 in Texas, a $1,240 difference.
- California $4,560
- Washington $4,290
- New York $3,780
- Florida $3,490
- Texas $3,320
Similar cars
Closest combined MPG among MY2004 midsize car models.
Generations
- 2000-2004 (C5)
- 2005-2011 (C6)
- 2012-2018 (C7)
- 2019-2025 (C8)
- 2026 (C9)
Frequently asked questions
What gas mileage does the 2000-2004 Audi A6 get?
EPA rates the 2000-2004 Audi A6 at 18–21 MPG combined across 31 configurations and 5 model years. The most efficient version, the 2004 A6 3.0L 6-cyl FWD, is rated 21 MPG (18 city, 25 highway).
Which years had the best MPG in the 2000-2004 Audi A6?
The A6 3.0L 6-cyl FWD reached the generation's best combined rating, 21 MPG, in 2003 and 2004. The lowest top rating, 18 MPG, was in 2000 and 2001.
Did EPA ratings change during the 2000-2004 Audi A6?
Yes. Ratings changed in 2001, 2002, 2003 and 2004.
How much does it cost to fuel a 2004 Audi A6 per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the A6 3.0L 6-cyl FWD costs about $3,830 a year. Across all 6 configurations the cost runs $3,830–$4,460 a year. That is a $630 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2004 Audi A6 100 miles?
About $25.53 per 100 miles for the A6 3.0L 6-cyl FWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $25.53 and $29.73 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2004 Audi A6 more efficient in the city or on the highway?
The A6 3.0L 6-cyl FWD is rated 18 city and 25 highway MPG, so it is more efficient on the highway, by 7 MPG.
How does the 2004 Audi A6 compare with other midsize car configurations?
The A6 3.0L 6-cyl FWD costs about $3,830 a year to fuel, $390 more than the class median of $3,440, and less than 4 of 10 midsize car configurations. The comparison covers all 119 rated midsize car configurations for MY2004, not weighted by sales.
Is the 2004 Audi A6 different from the 2003 model?
The most efficient configuration stays at 21 MPG. Its annual cost stays at $3,830. EPA lists 6 configurations for 2004 against 6 configurations for 2003. See the 2003 Audi A6 for that year.