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2004 Audi A8 L 4.2 Quattro (D3)
Shown: 2004 Audi A8 L 4.2 Quattro (D3). Photo: SsmIntrigue, CC BY-SA 4.0, via Wikimedia Commons
  • Newest year: 2009
  • Gas
  • Large cars
  • Same as 2008

2003-2009 Audi A8 MPG & Fuel Cost

7 model years · 15–18 MPG combined

18 MPG
Combined
16 MPG
City
23 MPG
Highway
Annual fuel cost · A8 4.2L 8-cyl 4WD
$4,460

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

Cheaper to fuel than 2 of 10 large car configurations, MY2009. Ranked against all rated configurations, not sales-weighted.

2003-2009 Audi A8 at a glance

The 2003-2009 Audi A8 covers 7 model years in the EPA database (18 configurations in all), rated 15–18 MPG combined. The newest model year, 2009, costs about $4,460 a year to fuel for its most efficient version, the A8 4.2L 8-cyl 4WD (18 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2004, 2005 and 2007; 2006, 2008 and 2009 repeat the values of the year before.

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

2003-2009 Audi A8 by model year

2003-2009 Audi A8: EPA combined rating and yearly fuel cost for each model year
Model yearPowertrainsCombined$/yrEPA ratings
2009 Gas 15–18 MPG $4,460–$5,360 Same EPA ratings as 2008
2008 Gas 15–18 MPG $4,460–$5,360 Same EPA ratings as 2007
2007 Gas 15–18 MPG $4,460–$5,360 Ratings changed
2006 Gas 15–18 MPG $4,460–$5,360 Same EPA ratings as 2005
2005 Gas 15–18 MPG $4,460–$5,360 Ratings changed
2004 Gas 18 MPG $4,460 Ratings changed
2003 Gas 18 MPG $4,460 First year

What the 2009 A8 4.2L 8-cyl 4WD costs to drive

Per month

$372

$4,460 a year ÷ 12

Per 25 miles

$7.43

Per 100 miles

$29.73

Five years

$22,300

5 × the yearly cost, prices held at today's level

vs the large car median

$830more a year

Class median $3,630 a year, MY2009

Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).

2009 Audi A8 MPG

EPA lists the same ratings for the 2009 Audi A8 as for the 2008 model, so the configurations and costs are the ones in the 2008 section above.See 2008

Gas · 4.2L, 6.0L
Combined
15–18 MPG
Per year
$4,460–$5,360

Gas configurations (3)

2009 Audi A8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
A8 (Most efficient) 4.2L 8-cyl 4WD 16 23 18 $4,460
L 4.2L 8-cyl 4.2L 8-cyl 4WD 16 23 18 $4,460
L 6.0L 12-cyl 6.0L 12-cyl 4WD 13 19 15 $5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2008 Audi A8 MPG

Same EPA ratings as 2007

EPA lists the same ratings for the 2008 Audi A8 as for the 2007 model, so the configurations and costs are the ones in the 2007 section above.See 2007

2007 Audi A8 MPG

15–18 MPG · $4,460–$5,360/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Versus 2006: The most efficient configuration stays at 18 MPG. Its annual cost stays at $4,460.

Gas · 4.2L, 6.0L
Combined
15–18 MPG
Per year
$4,460–$5,360

Gas configurations (3)

2007 Audi A8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
A8 (Most efficient) 4.2L 8-cyl 4WD 16 23 18 $4,460
L 4.2L 8-cyl 4.2L 8-cyl 4WD 16 23 18 $4,460
L 6.0L 12-cyl 6.0L 12-cyl 4WD 13 19 15 $5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2006 Audi A8 MPG

Same EPA ratings as 2005

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

EPA lists the same ratings for the 2006 Audi A8 as for the 2005 model, so the configurations and costs are the ones in the 2005 section above.See 2005

2005 Audi A8 MPG

15–18 MPG · $4,460–$5,360/yr

EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.

Versus 2004: The most efficient configuration stays at 18 MPG. Its annual cost stays at $4,460.

Gas · 4.2L, 6.0L
Combined
15–18 MPG
Per year
$4,460–$5,360

Gas configurations (3)

2005 Audi A8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
A8 (Most efficient) 4.2L 8-cyl 4WD 16 22 18 $4,460
L 4.2L 8-cyl 4.2L 8-cyl 4WD 16 22 18 $4,460
L 6.0L 12-cyl 6.0L 12-cyl 4WD 13 19 15 $5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2004 Audi A8 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 2003: The most efficient configuration stays at 18 MPG. Its annual cost stays at $4,460.

Gas · 4.2L
Combined
18 MPG
Per year
$4,460

Gas configurations (1)

2004 Audi A8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
L (Most efficient) 4.2L 8-cyl 4WD 16 22 18 $4,460

1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

2003 Audi A8 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 · 4.2L
Combined
18 MPG
Per year
$4,460

Gas configurations (2)

2003 Audi A8 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
A8 (Most efficient) 4.2L 8-cyl 4WD 15 23 18 $4,460
L 4.2L 8-cyl 4WD 15 23 18 $4,460

2 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 A8 4.2L 8-cyl 4WD: $5,320 in California and $3,870 in Texas, a $1,450 difference.

Gasoline prices: California: California state average; Washington: Washington state average; New York: New York state average; Florida: Florida state average; Texas: Texas state average (Sep 2026).
Fuel cost in every state

Similar cars

Closest combined MPG among MY2009 large car models.

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · Prices: EIA regular gasoline, U.S. average, Sep 2026 ($4.36/gal) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Generations

Frequently asked questions

What gas mileage does the 2003-2009 Audi A8 get?

EPA rates the 2003-2009 Audi A8 at 15–18 MPG combined across 18 configurations and 7 model years. The most efficient version, the 2009 A8 4.2L 8-cyl 4WD, is rated 18 MPG (16 city, 23 highway).

Which years had the best MPG in the 2003-2009 Audi A8?

Every model year of the 2003-2009 Audi A8 tops out at 18 MPG combined, so no year is better than another.

Did EPA ratings change during the 2003-2009 Audi A8?

Yes. Ratings changed in 2004, 2005 and 2007. In 2006, 2008 and 2009 the values repeat the year before.

How does the 2003-2009 Audi A8 compare with the previous generation?

The previous generation (2000-2002 Audi A8) is rated 18 MPG combined and costs $4,460 a year to fuel; the 2003-2009 model is rated 15–18 MPG and costs $4,460–$5,360 a year.

How much does it cost to fuel a 2009 Audi A8 per year?

Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the A8 4.2L 8-cyl 4WD costs about $4,460 a year. Across all 3 configurations the cost runs $4,460–$5,360 a year. That is a $900 difference between the cheapest and the costliest configuration.

How much does it cost to drive a 2009 Audi A8 100 miles?

About $29.73 per 100 miles for the A8 4.2L 8-cyl 4WD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $29.73 and $35.73 across all configurations. That is the annual cost over 15,000 miles divided by 150.

Is the 2009 Audi A8 more efficient in the city or on the highway?

The A8 4.2L 8-cyl 4WD is rated 16 city and 23 highway MPG, so it is more efficient on the highway, by 7 MPG.

How does the 2009 Audi A8 compare with other large car configurations?

The A8 4.2L 8-cyl 4WD costs about $4,460 a year to fuel, $830 more than the class median of $3,630, and less than 2 of 10 large car configurations. The comparison covers all 72 rated large car configurations for MY2009, not weighted by sales.

Is the 2009 Audi A8 different from the 2008 model?

No. EPA lists the same ratings for 2008 and 2009: 3 configurations rated 15–18 MPG combined. See the 2008 Audi A8 for that year.