- Newest year: 2005
- Gas
- Large cars
2000-2005 Cadillac DeVille MPG & Fuel Cost
6 model years · 18–19 MPG combined
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 7 of 10 large car configurations, MY2005. Ranked against all rated configurations, not sales-weighted.
2000-2005 Cadillac DeVille at a glance
The 2000-2005 Cadillac DeVille covers 6 model years in the EPA database (7 configurations in all), rated 18–19 MPG combined. The newest model year, 2005, costs about $3,440 a year to fuel for its most efficient version, the DeVille 4.6L 8-cyl FWD (19 MPG), at regular gasoline $4.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2001, 2002, 2004 and 2005; 2003 repeat the values of the year before. The best combined rating in the generation, 19 MPG, was reached in 2000, 2002, 2003, 2004 and 2005.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2000-2005 Cadillac DeVille by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2005 | Gas | 18–19 MPG | $3,440–$3,630 | Ratings changed |
| 2004 | Gas | 19 MPG | $3,440 | Ratings changed |
| 2003 | Gas | 19 MPG | $3,440 | Same EPA ratings as 2002 |
| 2002 | Gas | 19 MPG | $3,440 | Ratings changed |
| 2001 | Gas | 18 MPG | $4,460 | Ratings changed |
| 2000 | Gas | 19 MPG | $4,230 | First year |
What the 2005 DeVille 4.6L 8-cyl FWD costs to drive
Per month
$287
$3,440 a year ÷ 12
Per 25 miles
$5.73
Per 100 miles
$22.93
Five years
$17,200
5 × the yearly cost, prices held at today's level
vs the large car median
$640less a year
Class median $4,080 a year, MY2005
Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).
2005 Cadillac DeVille MPG
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 19 MPG. Its annual cost stays at $3,440.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| DeVille 4.6L 8-cyl FWD Automatic 4-spd (Most efficient) | 4.6L 8-cyl | FWD | 16 | 24 | 19 | $3,440 |
| DeVille 4.6L 8-cyl FWD Automatic 4-spd | 4.6L 8-cyl | FWD | 15 | 22 | 18 | $3,630 |
2004 Cadillac DeVille MPG
19 MPG · $3,440/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 19 MPG. Its annual cost stays at $3,440.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| DeVille (Most efficient) | 4.6L 8-cyl | FWD | 16 | 24 | 19 | $3,440 |
2003 Cadillac DeVille MPG
Same EPA ratings as 2002
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 2003 Cadillac DeVille as for the 2002 model, so the configurations and costs are the ones in the 2002 section above.See 2002
2002 Cadillac DeVille MPG
19 MPG · $3,440/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 $3,440, $1,020 less.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| DeVille (Most efficient) | 4.6L 8-cyl | FWD | 16 | 25 | 19 | $3,440 |
2001 Cadillac DeVille 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 moves from 19 to 18 MPG, down 1. Its annual cost goes from $4,230 to $4,460, $230 more.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| DeVille (Most efficient) | 4.6L 8-cyl | FWD | 15 | 25 | 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).
2000 Cadillac DeVille MPG
19 MPG · $4,230/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| DeVille (Most efficient) | 4.6L 8-cyl | FWD | 15 | 25 | 19 | $4,230 |
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 DeVille 4.6L 8-cyl FWD: $4,680 in California and $3,000 in Texas, a $1,680 difference.
- California $4,680
- Washington $4,330
- New York $3,440
- Florida $3,250
- Texas $3,000
Similar cars
Closest combined MPG among MY2005 large car models.
Generations
- 2000-2005 (8th gen)
Frequently asked questions
What gas mileage does the 2000-2005 Cadillac DeVille get?
EPA rates the 2000-2005 Cadillac DeVille at 18–19 MPG combined across 7 configurations and 6 model years. The most efficient version, the 2005 DeVille 4.6L 8-cyl FWD, is rated 19 MPG (16 city, 24 highway).
Which years had the best MPG in the 2000-2005 Cadillac DeVille?
The DeVille 4.6L 8-cyl FWD reached the generation's best combined rating, 19 MPG, in 2000, 2002, 2003, 2004 and 2005. The lowest top rating, 18 MPG, was in 2001.
Did EPA ratings change during the 2000-2005 Cadillac DeVille?
Yes. Ratings changed in 2001, 2002, 2004 and 2005. In 2003 the values repeat the year before.
How much does it cost to fuel a 2005 Cadillac DeVille per year?
Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the DeVille 4.6L 8-cyl FWD costs about $3,440 a year. Across all 2 configurations the cost runs $3,440–$3,630 a year. That is a $190 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2005 Cadillac DeVille 100 miles?
About $22.93 per 100 miles for the DeVille 4.6L 8-cyl FWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $22.93 and $24.20 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2005 Cadillac DeVille more efficient in the city or on the highway?
The DeVille 4.6L 8-cyl FWD is rated 16 city and 24 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2005 Cadillac DeVille compare with other large car configurations?
The DeVille 4.6L 8-cyl FWD costs about $3,440 a year to fuel, $640 less than the class median of $4,080, and less than 7 of 10 large car configurations. The comparison covers all 56 rated large car configurations for MY2005, not weighted by sales.
Is the 2005 Cadillac DeVille different from the 2004 model?
The most efficient configuration stays at 19 MPG. Its annual cost stays at $3,440. EPA lists 2 configurations for 2005 against 1 configuration for 2004. See the 2004 Cadillac DeVille for that year.