2006 Cadillac STS Specs, MPG & Trims
EPA fuel-economy data and specifications for the 2006 Cadillac STS (17–19 MPG combined) across 4 listed configurations.
Overview
- Body class
- Midsize Cars
- Drive
- Rear-Wheel Drive, 4-Wheel or All-Wheel Drive
- Engine
- 6-cyl, 3.6 L; 8-cyl, 4.6 L
- Fuel type
- Regular Gasoline, Premium Gasoline
- Combined MPG
- 17–19 MPG
- Annual fuel cost
- $3,550–$4,850
- Configurations
- 4
MPG & fuel economy
City, highway and combined values below are EPA estimates. Where a powertrain has several configurations, the table shows the lowest–highest reported value. Electric configurations use MPGe.
| Powertrain | City | Highway | Combined | Annual fuel cost | CO2 |
|---|---|---|---|---|---|
| 8-cyl 4.6 L · Premium Gasoline · 4-Wheel or All-Wheel Drive | 14 | 21 | 17 | $4,850 | — |
| 8-cyl 4.6 L · Premium Gasoline · Rear-Wheel Drive | 15 | 24 | 18 | $4,550 | — |
| 6-cyl 3.6 L · Regular Gasoline · 4-Wheel or All-Wheel Drive | 15 | 23 | 18 | $3,700 | — |
| 6-cyl 3.6 L · Regular Gasoline · Rear-Wheel Drive | 16 | 25 | 19 | $3,550 | — |
Configurations & engine comparison
Each row is one configuration/engine combination reported by the EPA for this model year. Missing EPA values are shown as —.
| Configuration / engine | Drive | Transmission | Cyl. | Displ. (L) | Fuel type | City | Hwy | Comb. | Annual cost |
|---|---|---|---|---|---|---|---|---|---|
| STS | Rear-Wheel Drive | Automatic (S5) | 6 | 3.6 | Regular Gasoline | 16 | 25 | 19 | $3,550 |
| STS | Rear-Wheel Drive | Automatic (S5) | 8 | 4.6 | Premium Gasoline | 15 | 24 | 18 | $4,550 |
| STS AWD | 4-Wheel or All-Wheel Drive | Automatic (S5) | 6 | 3.6 | Regular Gasoline | 15 | 23 | 18 | $3,700 |
| STS AWD | 4-Wheel or All-Wheel Drive | Automatic (S5) | 8 | 4.6 | Premium Gasoline | 14 | 21 | 17 | $4,850 |
Frequently asked questions
What is the combined MPG of the 2006 Cadillac STS?
According to EPA data, the 2006 Cadillac STS is rated at 17–19 MPG combined for its conventional-fuel configurations.
How many cylinders does the 2006 Cadillac STS have?
The EPA data lists 6 and 8 cylinders across its configurations.
What fuel type does the 2006 Cadillac STS use?
It is offered with Regular Gasoline and Premium Gasoline.
What is the annual fuel cost of the 2006 Cadillac STS?
The EPA estimates annual fuel costs ranging from $3,550 to $4,850.