- Gas
- Midsize cars
- MY2006–2009
Cadillac STS-V MPG & Fuel Cost by Year
4 model years · 2006–2009
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cadillac STS-V fuel economy at a glance
EPA has rated the Cadillac STS-V for 4 model years, 2006 to 2009. Across those years its combined rating runs 14–15 MPG. The latest model year, 2009, has 1 configuration rated 15 MPG combined and costing $5,360 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2006 is the 2009 STS-V 4.4L 8-cyl supercharged RWD, at 15 MPG.
Cadillac STS-V MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2006-2009 Generation page | ||
| 2009 | 15 | $5,360 |
| 2008 | 15 | $5,360 |
| 2007 | 15 | $5,360 |
| 2006 | 14 | $5,740 |
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 STS-V generations
1 generations between 2006 and 2009. Open one for the table of every model year and configuration.
2009 powertrain options
More Cadillac models
Frequently asked questions
What is the Cadillac STS-V's gas mileage by year?
EPA combined ratings for the Cadillac STS-V run 14–15 MPG across model years 2006 to 2009. The latest year, 2009, is rated 15 MPG.
Which Cadillac STS-V model year has the best gas mileage?
The 2009 Cadillac STS-V STS-V 4.4L 8-cyl supercharged RWD has the highest combined rating since 2006, at 15 MPG.
How much does a Cadillac STS-V cost to fuel per year?
For MY2009, EPA-rated configurations cost $5,360 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $5,360.
Has the Cadillac STS-V's fuel economy improved over time?
Yes. The most efficient configuration moved from 14 MPG in 2006 to 15 MPG in 2009, 1 MPG more.
Which Cadillac STS-V model years have the same ratings?
EPA lists identical ratings as the previous year for 2009. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.