How much does the 2006 Cadillac STS cost?

The 2006 Cadillac STS has a starting MSRP of $41,020, ranging up to $74,270 for the top trim. Trim pricing includes V6 from $41,020; V8 from $47,520; Base from $74,270.

What is the fuel economy of the 2006 Cadillac STS?

The 2006 Cadillac STS achieves up to 19 MPG combined (EPA estimate), depending on trim and configuration.

How much cargo space does the 2006 Cadillac STS have?

The 2006 Cadillac STS offers up to 13.8 cubic feet of cargo capacity, depending on trim and seating configuration.

How much can the 2006 Cadillac STS tow?

The 2006 Cadillac STS has a maximum towing capacity of up to 1,000 pounds, depending on trim and equipment.

How many trims does the 2006 Cadillac STS come in?

The 2006 Cadillac STS is available in 3 trims across Sedan body styles with rear wheel drive.

2006 Cadillac STS

3 trims · Sedan

Starting MSRP

$41,020 – $74,270

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Pricing

How much should you pay for the Cadillac STS? Select a trim to update purchase and lease estimates.

MSRP by trim

Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.

Purchase information

Based on V6

Total price (V6 MSRP)

$41,020

Typical monthly

$812/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-07-11). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2006 Cadillac STS trims

V6
MSRP
$41,020
Fuel economy (city/hwy)
16/25
Horsepower
255 hp
Torque
252 lb-ft
Engine
3.6L V6 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.8
Max towing
1,000 lbs
V8
MSRP
$47,520
Fuel economy (city/hwy)
15/24
Horsepower
320 hp
Torque
315 lb-ft
Engine
4.6L V8 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.8
Max towing
1,000 lbs
Base
MSRP
$74,270
Fuel economy (city/hwy)
12/19
Horsepower
469 hp
Torque
439 lb-ft
Engine
4.4L V8 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.8
Max towing
—

Compare 2006 Cadillac STS trim specifications
Spec	V6	V8	Base
MSRP	$41,020	$47,520	$74,270
Fuel economy (city/hwy)	16/25	15/24	12/19
Horsepower	255 hp	320 hp	469 hp
Torque	252 lb-ft	315 lb-ft	439 lb-ft
Engine	3.6L V6 gas	4.6L V8 gas	4.4L V8 gas
Seating	5	5	5
Drivetrain	RWD	RWD	RWD
Cargo (cu ft)	13.8	13.8	13.8
Max towing	1,000 lbs	1,000 lbs	—

Manufacturer specifications by trim and drivetrain. Same trim names with different MSRPs are distinct FWD/AWD (or other drivetrain) configurations from the catalog. MSRP excludes destination fees, taxes, and dealer-installed options.

Full specifications

Engine & drivetrain

Engine type: V6gas
V8gas
Basegas
Fuel type: V6regular unleaded
V8premium unleaded (required)
Basepremium unleaded (required)
Cylinders: V6V6
V8V8
BaseV8
Displacement: V63.6 L
V84.6 L
Base4.4 L
Horsepower: V6255 hp
V8320 hp
Base469 hp
Torque: V6252 lb-ft
V8315 lb-ft
Base439 lb-ft
Transmission: V65-speed shiftable automatic
V85-speed shiftable automatic
Base6-speed shiftable automatic
Drivetrain: V6rear wheel drive
V8rear wheel drive
Baserear wheel drive

Dimensions

Body type: V6Sedan
V8Sedan
BaseSedan
Doors: V64
V84
Base4
Seating: V65
V85
Base5
Length: V6196.3 in
V8196.3 in
Base197.6 in
Width: V672.6 in
V872.6 in
Base72.6 in
Height: V657.6 in
V857.6 in
Base58.2 in
Wheelbase: V6116.4 in
V8116.4 in
Base116.4 in

Capacity & weight

Cargo capacity: V613.8 cu ft
V813.8 cu ft
Base13.8 cu ft
Max cargo capacity: V613.8 cu ft
V813.8 cu ft
Base13.8 cu ft
Max towing: V61,000 lbs
V81,000 lbs
Base—
Curb weight: V63,960 lbs
V84,026 lbs
Base4,295 lbs
Fuel tank: V617 gal
V817 gal
Base17.5 gal

Fuel economy & EV

Combined MPG: V619
V818
Base14
City MPG: V616
V815
Base12
Highway MPG: V625
V824
Base19

Full specifications by trim
Spec	V6	V8	Base
Engine & drivetrain
Engine type	gas	gas	gas
Fuel type	regular unleaded	premium unleaded (required)	premium unleaded (required)
Cylinders	V6	V8	V8
Displacement	3.6 L	4.6 L	4.4 L
Horsepower	255 hp	320 hp	469 hp
Torque	252 lb-ft	315 lb-ft	439 lb-ft
Transmission	5-speed shiftable automatic	5-speed shiftable automatic	6-speed shiftable automatic
Drivetrain	rear wheel drive	rear wheel drive	rear wheel drive
Dimensions
Body type	Sedan	Sedan	Sedan
Doors	4	4	4
Seating	5	5	5
Length	196.3 in	196.3 in	197.6 in
Width	72.6 in	72.6 in	72.6 in
Height	57.6 in	57.6 in	58.2 in
Wheelbase	116.4 in	116.4 in	116.4 in
Capacity & weight
Cargo capacity	13.8 cu ft	13.8 cu ft	13.8 cu ft
Max cargo capacity	13.8 cu ft	13.8 cu ft	13.8 cu ft
Max towing	1,000 lbs	1,000 lbs	—
Curb weight	3,960 lbs	4,026 lbs	4,295 lbs
Fuel tank	17 gal	17 gal	17.5 gal
Fuel economy & EV
Combined MPG	19	18	14
City MPG	16	15	12
Highway MPG	25	24	19