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2003 Audi S6 C5 (Typ 4B)
Shown: 2003 Audi S6 C5 (Typ 4B). Photo: Spanish Coches, CC BY 2.0, via Wikimedia Commons
  • Newest year: 2003
  • Gas
  • Wagons

2002-2003 Audi S6 MPG & Fuel Cost

2 model years · 15 MPG combined

15 MPG
Combined
13 MPG
City
19 MPG
Highway
Annual fuel cost · Avant 4.2L 8-cyl 4WD
$5,360

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

Among the costliest wagon configurations to fuel, MY2003. Ranked against all rated configurations, not sales-weighted.

2002-2003 Audi S6 at a glance

The 2002-2003 Audi S6 covers 2 model years in the EPA database (2 configurations in all), rated 15 MPG combined. The newest model year, 2003, costs about $5,360 a year to fuel for its most efficient version, the Avant 4.2L 8-cyl 4WD (15 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2003.

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

2002-2003 Audi S6 by model year

2002-2003 Audi S6: EPA combined rating and yearly fuel cost for each model year
Model yearPowertrainsCombined$/yrEPA ratings
2003 Gas 15 MPG $5,360 Ratings changed
2002 Gas 15 MPG $5,360 First year

What the 2003 Avant 4.2L 8-cyl 4WD costs to drive

Per month

$447

$5,360 a year ÷ 12

Per 25 miles

$8.93

Per 100 miles

$35.73

Five years

$26,800

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

vs the wagon median

$1,710more a year

Class median $3,650 a year, MY2003

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

2003 Audi S6 MPG

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 stays at 15 MPG. Its annual cost stays at $5,360.

Gas · 4.2L
Combined
15 MPG
Per year
$5,360

Gas configurations (1)

2003 Audi S6 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Avant (Most efficient) 4.2L 8-cyl 4WD 13 19 15 $5,360

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

2002 Audi S6 MPG

15 MPG · $5,360/yr

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

Gas · 4.2L
Combined
15 MPG
Per year
$5,360

Gas configurations (1)

2002 Audi S6 gas configurations: EPA ratings and annual cost
TrimEngineDriveCityHwyComb.$/yr
Avant (Most efficient) 4.2L 8-cyl 4WD 12 19 15 $5,360

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

Fuel cost by state

Yearly cost of the Avant 4.2L 8-cyl 4WD: $6,390 in California and $4,650 in Texas, a $1,740 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 MY2003 wagon 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 2002-2003 Audi S6 get?

EPA rates the 2002-2003 Audi S6 at 15 MPG combined across 2 configurations and 2 model years. The most efficient version, the 2003 Avant 4.2L 8-cyl 4WD, is rated 15 MPG (13 city, 19 highway).

Which years had the best MPG in the 2002-2003 Audi S6?

Every model year of the 2002-2003 Audi S6 tops out at 15 MPG combined, so no year is better than another.

Did EPA ratings change during the 2002-2003 Audi S6?

Yes. Ratings changed in 2003.

How much does it cost to fuel a 2003 Audi S6 per year?

Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the Avant 4.2L 8-cyl 4WD costs about $5,360 a year. Across all 1 configuration the cost runs $5,360 a year.

How much does it cost to drive a 2003 Audi S6 100 miles?

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

Is the 2003 Audi S6 more efficient in the city or on the highway?

The Avant 4.2L 8-cyl 4WD is rated 13 city and 19 highway MPG, so it is more efficient on the highway, by 6 MPG.

How does the 2003 Audi S6 compare with other wagon configurations?

The Avant 4.2L 8-cyl 4WD costs about $5,360 a year to fuel, $1,710 more than the class median of $3,650, and less than 0 of 10 wagon configurations. The comparison covers all 45 rated wagon configurations for MY2003, not weighted by sales.

Is the 2003 Audi S6 different from the 2002 model?

The most efficient configuration stays at 15 MPG. Its annual cost stays at $5,360. EPA lists 1 configuration for 2003 against 1 configuration for 2002. See the 2002 Audi S6 for that year.