- Newest year: 2007
- Gas
- Midsize cars
2003-2007 Cadillac CTS MPG & Fuel Cost
5 model years · 16–19 MPG combined
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 5 of 10 midsize car configurations, MY2007. Ranked against all rated configurations, not sales-weighted.
2003-2007 Cadillac CTS at a glance
The 2003-2007 Cadillac CTS covers 5 model years in the EPA database (21 configurations in all), rated 16–19 MPG combined. The newest model year, 2007, costs about $3,440 a year to fuel for its most efficient version, the CTS 2.8L 6-cyl RWD (19 MPG), at regular gasoline $4.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2004, 2005, 2006 and 2007.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2003-2007 Cadillac CTS by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2007 | Gas | 16–19 MPG | $3,440–$5,020 | Ratings changed |
| 2006 | Gas | 17–19 MPG | $3,440–$4,730 | Ratings changed |
| 2005 | Gas | 16–19 MPG | $3,440–$5,020 | Ratings changed |
| 2004 | Gas | 17–19 MPG | $3,440–$4,730 | Ratings changed |
| 2003 | Gas | 19 MPG | $4,230 | First year |
What the 2007 CTS 2.8L 6-cyl RWD 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 midsize car median
$210less a year
Class median $3,650 a year, MY2007
Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).
2007 Cadillac CTS MPG
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 19 MPG. Its annual cost stays at $3,440.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CTS 2.8L 6-cyl RWD Manual 6-spd (Most efficient) | 2.8L 6-cyl | RWD | 15 | 25 | 19 | $3,440 |
| CTS 2.8L 6-cyl RWD Automatic (S5) | 2.8L 6-cyl | RWD | 16 | 24 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Automatic (S5) | 3.6L 6-cyl | RWD | 16 | 25 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Manual 6-spd | 3.6L 6-cyl | RWD | 15 | 24 | 18 | $3,630 |
| CTS-V | 6.0L 8-cyl | RWD | 14 | 22 | 16 | $5,020 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2006 Cadillac CTS MPG
17–19 MPG · $3,440–$4,730/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2005: The most efficient configuration stays at 19 MPG. Its annual cost stays at $3,440.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CTS 2.8L 6-cyl RWD Manual 6-spd (Most efficient) | 2.8L 6-cyl | RWD | 15 | 25 | 19 | $3,440 |
| CTS 2.8L 6-cyl RWD Automatic (S5) | 2.8L 6-cyl | RWD | 16 | 24 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Automatic (S5) | 3.6L 6-cyl | RWD | 16 | 25 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Manual 6-spd | 3.6L 6-cyl | RWD | 15 | 24 | 18 | $3,630 |
| CTS-V | 6.0L 8-cyl | RWD | 14 | 23 | 17 | $4,730 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2005 Cadillac CTS MPG
16–19 MPG · $3,440–$5,020/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 19 MPG. Its annual cost stays at $3,440.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CTS 2.8L 6-cyl RWD Manual 6-spd (Most efficient) | 2.8L 6-cyl | RWD | 16 | 25 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Automatic 5-spd | 3.6L 6-cyl | RWD | 16 | 25 | 19 | $3,440 |
| CTS 2.8L 6-cyl RWD Automatic 5-spd | 2.8L 6-cyl | RWD | 16 | 24 | 19 | $3,440 |
| CTS 3.6L 6-cyl RWD Manual 6-spd | 3.6L 6-cyl | RWD | 15 | 24 | 18 | $3,630 |
| CTS-V | 5.7L 8-cyl | RWD | 13 | 21 | 16 | $5,020 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2004 Cadillac CTS MPG
17–19 MPG · $3,440–$4,730/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 goes from $4,230 to $3,440, $790 less.
Gas configurations (4)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CTS 3.6L 6-cyl (Most efficient) | 3.6L 6-cyl | RWD | 16 | 25 | 19 | $3,440 |
| CTS 3.2L 6-cyl RWD Automatic 5-spd | 3.2L 6-cyl | RWD | 16 | 23 | 19 | $4,230 |
| CTS 3.2L 6-cyl RWD Manual 5-spd | 3.2L 6-cyl | RWD | 17 | 24 | 19 | $4,230 |
| CTS-V | 5.7L 8-cyl | RWD | 14 | 23 | 17 | $4,730 |
3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2003 Cadillac CTS 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 (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CTS 3.2L 6-cyl RWD Automatic 5-spd (Most efficient) | 3.2L 6-cyl | RWD | 16 | 24 | 19 | $4,230 |
| CTS 3.2L 6-cyl RWD Manual 5-spd | 3.2L 6-cyl | RWD | 17 | 24 | 19 | $4,230 |
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 CTS 2.8L 6-cyl RWD: $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 MY2007 midsize car models.
Generations
- 2003-2007 (1st gen)
- 2008-2013 (2nd gen)
- 2014-2019 (3rd gen)
Frequently asked questions
What gas mileage does the 2003-2007 Cadillac CTS get?
EPA rates the 2003-2007 Cadillac CTS at 16–19 MPG combined across 21 configurations and 5 model years. The most efficient version, the 2007 CTS 2.8L 6-cyl RWD, is rated 19 MPG (15 city, 25 highway).
Which years had the best MPG in the 2003-2007 Cadillac CTS?
Every model year of the 2003-2007 Cadillac CTS tops out at 19 MPG combined, so no year is better than another.
Did EPA ratings change during the 2003-2007 Cadillac CTS?
Yes. Ratings changed in 2004, 2005, 2006 and 2007.
How much does it cost to fuel a 2007 Cadillac CTS per year?
Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the CTS 2.8L 6-cyl RWD costs about $3,440 a year. Across all 5 configurations the cost runs $3,440–$5,020 a year. That is a $1,580 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2007 Cadillac CTS 100 miles?
About $22.93 per 100 miles for the CTS 2.8L 6-cyl RWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $22.93 and $33.47 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2007 Cadillac CTS more efficient in the city or on the highway?
The CTS 2.8L 6-cyl RWD is rated 15 city and 25 highway MPG, so it is more efficient on the highway, by 10 MPG.
How does the 2007 Cadillac CTS compare with other midsize car configurations?
The CTS 2.8L 6-cyl RWD costs about $3,440 a year to fuel, $210 less than the class median of $3,650, and less than 5 of 10 midsize car configurations. The comparison covers all 152 rated midsize car configurations for MY2007, not weighted by sales.
Is the 2007 Cadillac CTS different from the 2006 model?
The most efficient configuration stays at 19 MPG. Its annual cost stays at $3,440. EPA lists 5 configurations for 2007 against 5 configurations for 2006. See the 2006 Cadillac CTS for that year.