2006 · Midsize Car · Gas

2006 Cadillac STS MPG & fuel economy

The 2006 Cadillac STS is a midsize car offered in 4 EPA-rated configurations. The most efficient version returns 19 MPG combined (16 city / 25 highway) on regular gasoline. Across the lineup, combined ratings range from 17 to 19 MPG. That's up 1 MPG from the 2005 model. Among 41 midsize cars rated for 2006, it ranks 23rd for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $2,447 a year to fuel.

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Combined 19 MPG 16 MPG city · 25 MPG hwy
Driving range — not published for this model
Your fuel cost $2,447 15,000 mi/yr · $16.32 per 100 mi
Class rank, 2006 #23 of 41 Midsize Cars by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Fuel average

The 2006 Cadillac STS's fuel average is 8.1 km/L (12.4 L/100 km), or 19 MPG combined: 6.8 km/L in the city and 10.6 km/L on the highway.

MPGkm/LL/100 km
City166.814.7
Highway2510.69.4
Combined198.112.4

How it ranks among 2006 Midsize Cars

Full class ranking →
  1. 1Toyota Prius46 MPG $1,011
  2. 2Honda Accord26 MPG $1,788
  3. 3Hyundai Elantra26 MPG $1,788
  4. 4Honda Accord Hybrid25 MPG $1,860
  5. 5Kia Optima25 MPG $1,860
  6. 23Cadillac STS19 MPG $2,447
  7. 41Bentley Arnage11 MPG $5,386
2006 STSOther midsize carsClass median: $2,325/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

STS MPG across model years

Full history →

4 EPA-rated configurations

ConfigurationTypeCityHwyCombinedRangeYour cost / yr
RWD · 3.6L 6-cyl · 5-speed automatic
STS		 Gas 16 MPG 25 MPG 19 MPG — $2,447
4WD/AWD · 3.6L 6-cyl · 5-speed automatic
STS AWD		 Gas 15 MPG 23 MPG 18 MPG — $2,583
RWD · 4.6L 8-cyl · 5-speed automatic
STS		 Gas 15 MPG 24 MPG 18 MPG — $3,292
4WD/AWD · 4.6L 8-cyl · 5-speed automatic
STS AWD		 Gas 14 MPG 21 MPG 17 MPG — $3,485

Specs (most efficient configuration)

Fuel
Regular gasoline
Engine / motor
3.6L 6-cyl
Transmission
5-speed automatic
Drivetrain
RWD
Passenger volume
103 cu ft
Cargo volume
13 cu ft
Tailpipe CO₂
468 g/mi

2006 Cadillac STS vs. rivals

vs Lincoln Zephyr 20 MPG · $2,325/yr Zephyr saves $122/yr vs Volvo S80 22 MPG · $2,693/yr STS saves $246/yr vs Lexus GS 22 MPG · $2,693/yr STS saves $246/yr vs BMW 5 Series 21 MPG · $2,821/yr STS saves $374/yr vs Saab 9-5 22 MPG · $2,693/yr STS saves $246/yr vs Acura TL 21 MPG · $2,821/yr STS saves $374/yr vs Mercedes-Benz E-Class Diesel 27 MPG · $2,056/yr E-Class Diesel saves $392/yr

Compare the 2006 STS

With any other car from any year, including other STS model years. Type a year to jump, e.g. "2015 Accord".

Frequently asked questions

What is the gas mileage of the 2006 Cadillac STS?

Up to 19 MPG combined (16 city / 25 highway); ratings range from 17 to 19 MPG depending on configuration.

What fuel does the 2006 Cadillac STS use?

Regular gasoline.

What is the fuel average in km/L for the 2006 Cadillac STS?

The 2006 Cadillac STS's fuel average is 8.1 km/L (12.4 L/100 km), or 19 MPG combined: 6.8 km/L in the city and 10.6 km/L on the highway.

How much does it cost to fuel the 2006 Cadillac STS per year?

About $2,447 at 15,000 miles a year with $3.10/gal regular gas, or $16.32 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.

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