← all 2006 Cadillac STS AWD trims
2006 Cadillac STS AWD — 3.6L 6-cyl, S5 automatic, AWD
This 2006 Cadillac STS AWD (3.6L 6-cyl, S5 automatic, AWD) takes regular (87-octane) gasoline. REGULAR
18
MPG combined (15 city / 23 hwy)
$3,450
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 2006 Cadillac STS AWD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 4.6L 8-cyl, S5 automatic, AWD | PREMIUM | 17 | $4,550 |
EPA fuel type: Regular · class: Midsize Cars · retrieved 2026-06-14.