Cadillac STS Cadillac STS 2006 Audi A6 / S6 Audi A6 / S6 2016
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Cadillac STS vs. Audi A6 / S6 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 A6 / S6 Invoice Comparison

Lowest Total Price: $72,900

Audi A6 / S6 S6 4.0 TFSI   
Difference: $4,190

Lowest Total Invoice: $67,866

Audi A6 / S6 S6 4.0 TFSI   
Difference: $3,654

Calculate Payments

  Down Payment Interest Rate Term
Model Year20062016
ModelSTSA6 / S6
TrimSTS-VS6 4.0 TFSI
Body4dr Sedan4dr Sedan
Base Price $73,070 $70,900
Base Invoice $67,704 $65,938
Sunroof 1,200  
Cold Weather Package   500
Metallic paint (extra cost)   575
Sunroof 996  
Cold Weather Package   467
Metallic paint (extra cost)   536
Options (change) 1,200 1,075
Options (change) 996 1,003
Destination 720 925
Gas Tax 2,100 0
Total Price $77,090 $72,900
Total Invoice $71,520 $67,866

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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 A6 / S6 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 A6 / S6

Lowest Adjusted Price and Invoice: Audi A6 / S6 S6 4.0 TFSI
TrueDelta Adjusted Price Difference: $8,030
TrueDelta Adjusted Invoice Difference: $7,229
Model Year20062016
ModelSTSA6 / S6
TrimSTS-VS6 4.0 TFSI
Body4dr Sedan4dr Sedan
Engine469hp V8450hp V8
TransmissionT6S7
DrivetrainRWDAWD
EPA Fuel Economy (city/highway)14/20 MPG18/27 MPG
Audio (watts, speakers)300, 15?, 10
Tire (rear if not all the same)255/45-18255/40-19
Total Price$77,090$72,900
Adjustments for Features0-3,840
Feature-Adjusted Total Price$77,090$69,060
Total Invoice$71,520$67,866
Adjustments for Features0-3,575
Feature-Adjusted Total Invoice$71,520$64,291

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Features Comparison: Cadillac STS vs. Audi A6 / S6

Model Year20062016
ModelSTSA6 / S6
TrimSTS-VS6 4.0 TFSI
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100 
7-speed automated manual $1200
RWD$0 
AWD $1700
Accessories 
Remote start$150 
Brakes, Airbags, and Other Safety 
Blind spot warning system $200
Collision preparation system, rear $100
Knee airbag, driver $75
Knee airbag, passenger $75
Obstacle detection, front $150
Rearview camera $200
Rollover sensor $50
Secondary collision brake assist $25
Tires, run-flat$150 
Climate Control 
Rear air vents with automatic controls $250
Rear air vents with manual controls$150 
Rear dual-zone climate control $125
Residual heat $50
Drivetrain 
Limited-slip rear differential$300 
Engine / Motor 
Automatic start / stop $150
Dual-mode exhaust, switchable $500
Regenerative braking $0
Exterior 
Rear spoiler$200 
Infotainment 
4G LTE connectivity $0
Aux input $50
Bluetooth audio streaming $25
CD changer, in-dash$325 
CD player $125
Handwriting recognition $200
HD radio $50
In-vehicle Internet $150
iPod integration $100
Media drive $15
MP3-compatible player $50
Satellite radio $200
Siri Eyes Free support $0
Surround sound$250 
Telematics service, such as OnStar$200 
Traffic + travel information $25
Wi-Fi hotspot $50
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200 
Auto-dimming passenger-side mirror $75
Compass $0
Fog light, rear $100
Fog lights$125 
Headlight washers$50 
Mirror tilt-down in reverse $25
Power-folding mirrors $50
Seats and Interior Trim 
Folding second row seats $300
Synthetic suede inserts in leather seating surfaces$0 
Upholstered instrument panel, leather$1000 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500
Air suspension, auto-leveling and height adjustable $1000
Alloy wheels $350
Auto-leveling rear shocks$200 
Electronic systems calibration selector $200
Performance steering system (optional)$0 
Polished alloy wheels$350 
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$4,750$8,590
Value of Feature Adjustments$0$3,840
Value of Feature Adjustments0-3,575

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See a complete comparison of Cadillac STS vs. Audi A6 / S6 features.

Specifications Comparison: Cadillac STS vs. Audi A6 / S6

Model Year20062016
ModelSTSA6 / S6
Body4dr Sedan4dr Sedan
Wheelbase116.4 in114.6 in
Length196.3 in194.2 in
Width72.6 in73.8 in
Height57.6 in57.8 in
Curb Weight4,233 lb.4,486 lb.
Fuel Capacity17.0 gal.19.8 gal.
Row 1 Headroom38.7 in37.2 in
Row 1 Shoulder Room58.6 in57.5 in
Row 1 Hip Room54.6 in0.0 in
Row 1 Legroom42.6 in41.3 in
Row 2 Headroom37.9 in37.8 in
Row 2 Shoulder Room57.4 in56.3 in
Row 2 Hip Room55.6 in0.0 in
Row 2 Legroom38.3 in37.4 in
Cargo Volume13.8 ft314.1 ft3

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See a complete comparison of Cadillac STS vs. Audi A6 / S6 specs.

Option Package Details
Audi A6 / S6 S6 4.0 TFSI

Cold Weather Package
FeatureValueRequested?
Heated second row seats200Yes
Heated steering wheel100Yes
Total Requested300100%
Total Not Requested00%

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