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2005 Cadillac STS

2 trims · Sedan

Starting MSRP

$40,525 – $47,025

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Key specifications

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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)

$40,525

Typical monthly

$802/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-08-23). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2005 Cadillac STS trims

  • V6

    MSRP
    $40,525
    Fuel economy (city/hwy)
    16/23
    Horsepower
    260 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
    $47,025
    Fuel economy (city/hwy)
    15/23
    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

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
Fuel type
V6regular unleaded
V8premium unleaded (required)
Cylinders
V6V6
V8V8
Displacement
V63.6 L
V84.6 L
Horsepower
V6260 hp
V8320 hp
Torque
V6252 lb-ft
V8315 lb-ft
Transmission
V65-speed shiftable automatic
V85-speed shiftable automatic
Drivetrain
V6rear wheel drive
V8rear wheel drive

Dimensions

Body type
V6Sedan
V8Sedan
Doors
V64
V84
Seating
V65
V85
Length
V6196.3 in
V8196.3 in
Width
V672.6 in
V872.6 in
Height
V657.6 in
V857.6 in
Wheelbase
V6116.4 in
V8116.4 in

Capacity & weight

Cargo capacity
V613.8 cu ft
V813.8 cu ft
Max cargo capacity
V613.8 cu ft
V813.8 cu ft
Max towing
V61,000 lbs
V81,000 lbs
Curb weight
V63,960 lbs
V84,026 lbs
Fuel tank
V617 gal
V817 gal

Fuel economy & EV

Combined MPG
V618
V818
City MPG
V616
V815
Highway MPG
V623
V823

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2005 Cadillac STS FAQ

How much does the 2005 Cadillac STS cost?
The 2005 Cadillac STS has a starting MSRP of $40,525, ranging up to $47,025 for the top trim. Trim pricing includes V6 from $40,525; V8 from $47,025.
What is the fuel economy of the 2005 Cadillac STS?
The 2005 Cadillac STS achieves up to 18 MPG combined (EPA estimate), depending on trim and configuration.
How much cargo space does the 2005 Cadillac STS have?
The 2005 Cadillac STS offers up to 13.8 cubic feet of cargo capacity, depending on trim and seating configuration.
How much can the 2005 Cadillac STS tow?
The 2005 Cadillac STS has a maximum towing capacity of up to 1,000 pounds, depending on trim and equipment.
How many trims does the 2005 Cadillac STS come in?
The 2005 Cadillac STS is available in 2 trims across Sedan body styles with rear wheel drive.