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2003 Cadillac Seville STS
Shown: 2003 Cadillac Seville STS. Photo: SsmIntrigue, CC BY-SA 4.0, via Wikimedia Commons
  • Gas
  • Midsize cars
  • MY2000–2004

Cadillac Seville MPG & Fuel Cost by Year

5 model years · 2000–2004

19 MPG
Combined
16 MPG
City
24 MPG
Highway
Annual cost · MY2004 Seville 4.6L 8-cyl FWD
$3,440

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Cadillac models

Cadillac Seville fuel economy at a glance

EPA has rated the Cadillac Seville for 5 model years, 2000 to 2004. Across those years its combined rating runs 18–19 MPG. The latest model year, 2004, has 1 configuration rated 19 MPG combined and costing $3,440 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2000 is the 2004 Seville 4.6L 8-cyl FWD, at 19 MPG. EPA ratings go back to 1984: the earliest rating on this page is 21 MPG in 1984.

Cadillac Seville MPG by year

1820 20002004 Gas 1820 20002004 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Cadillac Seville: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2000-2004 (5th gen) Generation page
2004 19 $3,440
2003 19 $3,440
2002 19 $3,440
2001 18 $4,460
2000 19 $4,230

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Cadillac Seville generations

1 generations between 2000 and 2004. Open one for the table of every model year and configuration.

2004 powertrain options

Gas · 4.6L
Combined
19 MPG
Per year
$3,440
See gas configurations

Cadillac Seville MPG history, 1984–1999

Cadillac Seville: combined MPG range by model year, 1984–1999
YearGas (MPG)Diesel (MPG)
1999 18 —
1998 18 —
1997 18 —
1996 18 —
1995 18 —
1994 18 —
1993 17–18 —
1992 18 —
Show 8 more years
Cadillac Seville: combined MPG range by model year, 1984–1999 (+8)
YearGas (MPG)Diesel (MPG)
199118—
199017—
198918—
198817—
198718—
198618—
19851720
198416–1721

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

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

Frequently asked questions

What is the Cadillac Seville's gas mileage by year?

EPA combined ratings for the Cadillac Seville run 18–19 MPG across model years 2000 to 2004. The latest year, 2004, is rated 19 MPG.

Which Cadillac Seville model year has the best gas mileage?

The 2004 Cadillac Seville Seville 4.6L 8-cyl FWD has the highest combined rating since 2000, at 19 MPG.

How much does a Cadillac Seville cost to fuel per year?

For MY2004, EPA-rated configurations cost $3,440 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,440.

Has the Cadillac Seville's fuel economy improved over time?

Not much. The most efficient configuration is rated 19 MPG in both 2000 and 2004. Going back further, the best rating in 1984 was 21 MPG.

Which Cadillac Seville model years have the same ratings?

EPA lists identical ratings as the previous year for 2003. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.