Audi A6 / S6 Audi A6 / S6 2013 Cadillac STS Cadillac STS 2008
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Audi A6 / S6 vs. Cadillac STS 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.

Audi A6 / S6 vs. Cadillac STS Invoice Comparison

Lowest Total Price: $74,220

Audi A6 / S6 S6 4.0 TFSI   
Difference: $7,430

Lowest Total Invoice: $69,092

Audi A6 / S6 S6 4.0 TFSI   
Difference: $5,862

Calculate Payments

  Down Payment Interest Rate Term
Model Year20132008
ModelA6 / S6STS
TrimS6 4.0 TFSISTS-V
Body4dr Sedan4dr Sedan
Base Price $71,900 $77,575
Base Invoice $66,868 $71,083
Cold Weather Package 450  
Audi Side Assist Package 500  
Metallic paint (extra cost) 475  
Sunroof   1,200
Cold Weather Package 419  
Audi Side Assist Package 467  
Metallic paint (extra cost) 443  
Sunroof   996
Options (change) 1,425 1,200
Options (change) 1,329 996
Destination 895 775
Gas Tax 0 2,100
Total Price $74,220 $81,650
Total Invoice $69,092 $74,954

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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 Audi A6 / S6 dealer quotes or Cadillac STS dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Audi A6 / S6 vs. Cadillac STS

Lowest Adjusted Price and Invoice: Audi A6 / S6 S6 4.0 TFSI
TrueDelta Adjusted Price Difference: $10,920
TrueDelta Adjusted Invoice Difference: $9,111
Model Year20132008
ModelA6 / S6STS
TrimS6 4.0 TFSISTS-V
Body4dr Sedan4dr Sedan
Engine420hp V8469hp V8
TransmissionS7T6
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)17/27 MPG13/19 MPG
Audio (watts, speakers)630, 14300, 15
Tire (rear if not all the same)255/40-19255/45-18
Total Price$74,220$81,650
Adjustments for Features-3,4900
Feature-Adjusted Total Price$70,730$81,650
Total Invoice$69,092$74,954
Adjustments for Features-3,2490
Feature-Adjusted Total Invoice$65,843$74,954

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Features Comparison: Audi A6 / S6 vs. Cadillac STS

Model Year20132008
ModelA6 / S6STS
TrimS6 4.0 TFSISTS-V
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
7-speed automated manual$1200 
6-speed manually-shiftable automatic $1100
AWD$1700 
RWD $0
Accessories 
Remote start $150
Brakes, Airbags, and Other Safety 
Collision preparation system, rear$100 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Lane departure warning $200
Obstacle detection, front$150 
Rearview camera$200 
Rollover sensor$50 
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 
Active rear differential$500 
Limited-slip rear differential $300
Engine / Motor 
Dual-mode exhaust, switchable$500 
Regenerative braking$0 
Exterior 
Body kit$0 
Laminated front side windows $200
Rear spoiler $200
Infotainment 
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 
Rear seat audio controls $25
Telematics service, such as OnStar, with navigation $225
Traffic + travel information$25 
Wi-Fi hotspot$50 
Instruments, Lights, and Mirrors 
Auto-dimming headlights $200
Auto-dimming passenger-side mirror$75 
Compass$0 
Cornering lights$50 
Fog light, rear$100 
Fog lights $125
Head-up display (HUD) $350
Headlight washers $50
Interior ambient lighting$150 
Mirror tilt-down in reverse$25 
Power-folding mirrors$50 
Steering-linked headlights$150 
Seats and Interior Trim 
Door sill trim plates $100
Folding second row seats$300 
Illuminated door sill trim plates$200 
Leather door panel trim $250
Metal pedals$75 
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 
Auto-leveling rear shocks $200
Electronic systems calibration selector$200 
Performance steering system (optional) $0
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$8,790$5,300
Value of Feature Adjustments$3,490$0
Value of Feature Adjustments-3,2490

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

Specifications Comparison: Audi A6 / S6 vs. Cadillac STS

Model Year20132008
ModelA6 / S6STS
Body4dr Sedan4dr Sedan
Wheelbase114.7 in116.4 in
Length193.9 in196.7 in
Width73.8 in72.6 in
Height57.8 in57.6 in
Curb Weight4,398 lb.4,233 lb.
Fuel Capacity19.8 gal.17.0 gal.
Row 1 Headroom37.2 in38.7 in
Row 1 Shoulder Room57.5 in58.6 in
Row 1 Hip Room0.0 in54.6 in
Row 1 Legroom41.3 in42.6 in
Row 2 Headroom37.8 in37.9 in
Row 2 Shoulder Room56.3 in57.4 in
Row 2 Hip Room0.0 in55.6 in
Row 2 Legroom37.4 in38.3 in
Cargo Volume14.1 ft313.8 ft3

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See a complete comparison of Audi A6 / S6 vs. Cadillac STS 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%
Audi Side Assist Package
FeatureValueRequested?
Power-folding mirrors50No
Blind spot warning system200Yes
Collision preparation system, rear only100No
Total Requested20057%
Total Not Requested15043%

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