Audi A6 / S6 Audi A6 / S6 2015 Cadillac STS Cadillac STS 2010

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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: $69,610

Cadillac STS V8 Performance   
Difference: $10,665

Lowest Total Invoice: $65,827

Cadillac STS V8 Performance   
Difference: $8,897

Calculate Payments

  Down Payment Interest Rate Term
Model Year20152010
ModelA6 / S6STS
TrimS6 4.0 TFSIV8 Performance
Body4dr Sedan4dr Sedan
Base Price $75,500 $68,785
Base Invoice $70,217 $65,002
Cold Weather Package 500  
Driver Assistance Package 2,800  
Metallic paint (extra cost) 550  
Cold Weather Package 467  
Driver Assistance Package 2,604  
Metallic paint (extra cost) 511  
Options (change) 3,850 0
Options (change) 3,582 0
Destination 925 825
Total Price $80,275 $69,610
Total Invoice $74,724 $65,827

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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

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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: Cadillac STS V8 Performance
TrueDelta Adjusted Price Difference: $3,860
TrueDelta Adjusted Invoice Difference: $2,563
Model Year20152010
ModelA6 / S6STS
TrimS6 4.0 TFSIV8 Performance
Body4dr Sedan4dr Sedan
Engine420hp V8320hp V8
TransmissionS7T6
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)17/27 MPG15/24 MPG
Audio (watts, speakers)630, 14300, 15
Tire (rear if not all the same)255/40-19235/50-18
Total Price$80,275$69,610
Adjustments for Features-6,8050
Feature-Adjusted Total Price$73,470$69,610
Total Invoice$74,724$65,827
Adjustments for Features-6,3340
Feature-Adjusted Total Invoice$68,390$65,827

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Features Comparison: Audi A6 / S6 vs. Cadillac STS

Model Year20152010
ModelA6 / S6STS
TrimS6 4.0 TFSIV8 Performance
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
7-speed automated manual$1200 
6-speed manually-shiftable automatic $1100
AWD$1700 
RWD $0
Accessories 
Adaptive cruise control $600
Adaptive cruise control, all-speed$850 
Remote start $150
Brakes, Airbags, and Other Safety 
Around view cameras$500 
Automatic braking, low-speed$200 
Collision preparation system, rear$100 
Forward collision warning$200 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Lane departure prevention$150 
Obstacle detection, front$150 
Radar- or camera-based collision preparation system$0 
Rollover sensor$50 
Wide-view front camera$150 
Wide-view rear camera$0 
Climate Control 
Heated windshield washer nozzles$15 
Rain-sensing wipers$175 
Rear air vents with automatic controls$250 
Rear air vents with manual controls $150
Rear dual-zone climate control$125 
Residual heat$50 
Variable intermittent wipers $75
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
Headlight washers $50
Interior ambient lighting$150 
LED headlights$1000 
Mirror tilt-down in reverse$25 
Power-folding mirrors$50 
Xenon HID headlights $500
Seats and Interior Trim 
Cooled or ventilated front seats $300
Door sill trim plates $100
Folding second row seats$300 
Illuminated door sill trim plates$200 
Leather door panel trim$250 
Leather-wrapped steering wheel$150 
Metal pedals$75 
Wood/leather-wrapped steering wheel $150
Suspension, Wheels, and Tires 
Air suspension, auto-leveling and height adjustable$1000 
Alloy wheels$350 
Electronic systems calibration selector$200 
Polished alloy wheels $350
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$11,930$5,125
Value of Feature Adjustments$6,805$0
Value of Feature Adjustments-6,3340

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Specifications Comparison: Audi A6 / S6 vs. Cadillac STS

Model Year20152010
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.3,995 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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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%
Driver Assistance Package
FeatureValueRequested?
Radar- or camera-based collision preparation system0No
Lane departure warning system200Yes
Adaptive cruise control, all-speed700No
Lane departure prevention system150No
Around view cameras300No
Automatic braking, low-speed200No
Forward collision warning200No
Wide-view front camera150No
Wide-view rear camera0No
Total Requested20011%
Total Not Requested170089%

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