Cadillac STS Cadillac STS 2006 Audi A4 / S4 Audi A4 / S4 2006
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Cadillac STS vs. Audi A4 / S4 Price Comparison (MSRP)

The sticker prices, before adjusting for remaining feature differences. Usually these are the numbers you will see on the window stickers.

Models in short supply often sell at or even above these prices.

Cadillac STS vs. Audi A4 / S4 Invoice Comparison

Lowest Total Price: $55,120

Audi A4 / S4 S4   
Difference: $21,970

Lowest Total Invoice: $50,913

Audi A4 / S4 S4   
Difference: $20,607

Calculate Payments

  Down Payment Interest Rate Term
Model Year20062006
ModelSTSA4 / S4
TrimSTS-VS4
Body4dr Sedan4dr Sedan
Base Price $73,070 $46,400
Base Invoice $67,704 $42,758
Sunroof 1,200  
Cold Weather Package   400
Premium Package   2,900
Metallic paint (extra cost)   450
Tire-pressure monitor   250
Obstacle detection, rear   350
Navigation system   1,950
Synthetic suede inserts in leather seating surfaces   0
Sunroof 996  
Cold Weather Package   364
Premium Package   2,639
Metallic paint (extra cost)   410
Tire-pressure monitor   228
Obstacle detection, rear   319
Navigation system   1,775
Synthetic suede inserts in leather seating surfaces   0
Options (change) 1,200 6,300
Options (change) 996 5,735
Destination 720 720
Gas Tax 2,100 1,700
Total Price $77,090 $55,120
Total Invoice $71,520 $50,913

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While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

Want to find out how much dealers are willing to discount these cars?

Request free, no-obligation Cadillac STS dealer quotes or Audi A4 / S4 dealer quotes from dealers using our car quote form.

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

TrueDelta Value Comparison: Cadillac STS vs. Audi A4 / S4

Lowest Adjusted Price and Invoice: Audi A4 / S4 S4
TrueDelta Adjusted Price Difference: $19,995
TrueDelta Adjusted Invoice Difference: $18,775
Model Year20062006
ModelSTSA4 / S4
TrimSTS-VS4
Body4dr Sedan4dr Sedan
Engine469hp V8340hp V8
TransmissionT6M6
DrivetrainRWDAWD
EPA Fuel Economy (city/highway)14/20 MPG15/21 MPG
Audio (watts, speakers)300, 15150, 10
Tire (rear if not all the same)255/45-18235/40-18
Total Price$77,090$55,120
Adjustments for Features-1,9750
Feature-Adjusted Total Price$75,115$55,120
Total Invoice$71,520$50,913
Adjustments for Features-1,8320
Feature-Adjusted Total Invoice$69,688$50,913

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Features Comparison: Cadillac STS vs. Audi A4 / S4

Model Year20062006
ModelSTSA4 / S4
TrimSTS-VS4
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100 
6-speed manual $150
RWD$0 
AWD $1700
Accessories 
Heated steering wheel$100 
Proximity key$250 
Remote start$150 
Tilt/telescoping steering wheel, manual $250
Tilt/telescoping steering wheel, power$350 
Brakes, Airbags, and Other Safety 
Tires, run-flat$150 
Cargo Management 
Ski sack $50
Climate Control 
Rear air vents with manual controls$150 
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Bodyside moldings $75
Laminated front side windows$200 
Infotainment 
Bluetooth cell phone link$100 
CD changer, in-dash$325 
CD changer, remote $200
DVD-compatible player$0 
Surround sound$250 
Telematics service, such as OnStar$200 
Voice control for nav and audio$100 
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200 
Auto-dimming passenger-side mirror $75
Compass $0
Fog light, rear $100
Power-folding mirrors $50
Steering-linked headlights $150
Seats and Interior Trim 
Folding second row seats $300
Manual thigh support length adjuster, driver seat $50
Upholstered instrument panel, leather$1000 
Suspension, Wheels, and Tires 
Alloy wheels $350
Auto-leveling rear shocks$200 
Performance steering system (optional)$0 
Polished alloy wheels$350 
Sport suspension (upgrade)$0 
Ultra-sport suspension (upgrade) $0
Total Value of Features$5,475$3,500
Value of Feature Adjustments$1,975$0
Value of Feature Adjustments-1,8320

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See a complete comparison of Cadillac STS vs. Audi A4 / S4 features.

Specifications Comparison: Cadillac STS vs. Audi A4 / S4

Model Year20062006
ModelSTSA4 / S4
Body4dr Sedan4dr Sedan
Wheelbase116.4 in104.3 in
Length196.3 in180.6 in
Width72.6 in69.8 in
Height57.6 in56.2 in
Curb Weight4,233 lb.3,825 lb.
Fuel Capacity17.0 gal.16.6 gal.
Row 1 Headroom38.7 in38.4 in
Row 1 Shoulder Room58.6 in55.1 in
Row 1 Hip Room54.6 in0.0 in
Row 1 Legroom42.6 in41.3 in
Row 2 Headroom37.9 in37.2 in
Row 2 Shoulder Room57.4 in53.4 in
Row 2 Hip Room55.6 in0.0 in
Row 2 Legroom38.3 in34.3 in
Cargo Volume13.8 ft313.4 ft3

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See a complete comparison of Cadillac STS vs. Audi A4 / S4 specs.

Option Package Details
Audi A4 / S4 S4

Navigation system
FeatureValueRequested?
Navigation system600Yes
CD changer, remote-125Yes
Total Requested475100%
Total Not Requested00%
Cold Weather Package
FeatureValueRequested?
Heated second row seats200Yes
Rear seat pass-through100Yes
Ski sack50No
Total Requested30086%
Total Not Requested5014%
Premium Package
FeatureValueRequested?
Heated front seats200Yes
Sunroof900Yes
Universal garage door opener100Yes
Rain-sensing wipers100Yes
Automatic headlights125Yes
Steering-linked headlights150No
Alloy wheels, optional design0No
Memory system, driver seat200Yes
Auto-dimming passenger-side mirror75No
Auto-dimming rearview mirror150Yes
Auto-dimming driver-side mirror75Yes
Compass0No
Power-folding mirrors50No
Total Requested185087%
Total Not Requested27513%

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