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- Large cars
- MY2000–2005
Cadillac DeVille MPG & Fuel Cost by Year
6 model years · 2000–2005
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cadillac DeVille fuel economy at a glance
EPA has rated the Cadillac DeVille for 6 model years, 2000 to 2005. Across those years its combined rating runs 18–19 MPG. The latest model year, 2005, has 2 configurations rated 18–19 MPG combined and costing $3,440–$3,630 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 2005 DeVille 4.6L 8-cyl FWD, at 19 MPG. EPA ratings go back to 1984: the earliest rating on this page is 17 MPG in 1988.
Cadillac DeVille MPG by year
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 DeVille generations
1 generations between 2000 and 2005. Open one for the table of every model year and configuration.
2005 powertrain options
Cadillac DeVille MPG history, 1988–1999
| Year | Gas (MPG) |
|---|---|
| 1999 | 18 |
| 1998 | 18 |
| 1997 | 18 |
| 1996 | 18 |
| 1988 | 17 |
EPA re-estimated the ratings of pre-2008 vehicles under its 2008 method; these are the re-estimated values.
More Cadillac models
Frequently asked questions
What is the Cadillac DeVille's gas mileage by year?
EPA combined ratings for the Cadillac DeVille run 18–19 MPG across model years 2000 to 2005. The latest year, 2005, is rated 18–19 MPG.
Which Cadillac DeVille model year has the best gas mileage?
The 2005 Cadillac DeVille DeVille 4.6L 8-cyl FWD has the highest combined rating since 2000, at 19 MPG.
How much does a Cadillac DeVille cost to fuel per year?
For MY2005, EPA-rated configurations cost $3,440–$3,630 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 DeVille's fuel economy improved over time?
Not much. The most efficient configuration is rated 19 MPG in both 2000 and 2005. Going back further, the best rating in 1984 was 17 MPG.
Which Cadillac DeVille 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.