Audi A6 Audi A6 2006 Cadillac STS Cadillac STS 2008

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Audi A6 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 vs. Cadillac STS Invoice Comparison

Lowest Total Price: $53,190

Audi A6 3.2   
Difference: $12,550

Lowest Total Invoice: $48,894

Audi A6 3.2   
Difference: $11,396

Calculate Payments

  Down Payment Interest Rate Term
Model Year200620062008
ModelA6A6STS
Trim3.24.2V8
Body4dr Sedan4dr Sedan4dr Sedan
Base Price $40,820 $53,770 $53,275
Base Invoice $37,572 $49,559 $49,812
Premium Package 2,500    
Cold Weather Package 400 400  
Sunroof 1,450    
Technology Package 3,800 3,800  
Bose 330W 13 speakers 0    
Polished alloy wheels 1,200 900  
Heated steering wheel 200 200  
Adaptive cruise control 2,100 2,100  
Preferred Equipment Group 1SG     11,690
Premium Package 2,275    
Cold Weather Package 364 364  
Sunroof 1,320    
Technology Package 3,458 3,458  
Bose 330W 13 speakers 0    
Polished alloy wheels 1,092 819  
Heated steering wheel 182 182  
Adaptive cruise control 1,911 1,911  
Preferred Equipment Group 1SG     9,703
Options (change) 11,650 7,400 11,690
Options (change) 10,602 6,734 9,703
Destination 720 720 775
Total Price $53,190 $61,890 $65,740
Total Invoice $48,894 $57,013 $60,290

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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 dealer quotes or Cadillac STS dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Audi A6 vs. Cadillac STS

Lowest Adjusted Price and Invoice: Audi A6 3.2
TrueDelta Adjusted Price Difference: $10,315
TrueDelta Adjusted Invoice Difference: $9,346
Model Year200620062008
ModelA6A6STS
Trim3.24.2V8
Body4dr Sedan4dr Sedan4dr Sedan
Engine255hp V6335hp V8320hp V8
TransmissionCVT-7T6T6
DrivetrainFWDAWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG
Audio (watts, speakers)330, 13330, 13300, 15
Tire (rear if not all the same)245/40-18245/40-18235/50-18
Total Price$53,190$61,890$65,740
Adjustments for Features0-1,800-2,235
Feature-Adjusted Total Price$53,190$60,090$63,505
Cost Above Minimum$0$6,900$0
Total Invoice$48,894$57,013$60,290
Adjustments for Features0-1,658-2,050
Feature-Adjusted Total Invoice$48,894$55,355$58,240
Cost Above Minimum$0$6,461$0

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Features Comparison: Audi A6 vs. Cadillac STS

Model Year200620062008
ModelA6A6STS
Trim3.24.2V8
Body4dr Sedan4dr Sedan4dr Sedan
Transmission and Drivetrain 
7-speed manually-shiftable CVT$1100  
6-speed manually-shiftable automatic $1100$1100
FWD$0  
AWD $1700 
RWD  $0
Accessories 
Remote start  $150
Tilt/telescoping steering wheel, manual$250  
Tilt/telescoping steering wheel, power $350$350
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0 
Blind spot warning system  $200
Lane departure warning  $200
Cargo Management 
Ski sack$50$50 
Storage compartment under front seat(s)$50$50 
Climate Control 
Heated windshield washer nozzles$15$15 
Rear air vents$100$100 
Rear air vents with manual controls  $150
Residual heat$50$50 
Drivetrain 
Limited-slip rear differential  $300
Exterior 
Bodyside moldings$75$75 
Laminated front side windows  $200
Rear spoiler  $200
Infotainment 
CD changer, in-dash  $325
CD changer, remote$200$200 
DVD-compatible player  $0
Rear seat audio controls  $25
Telematics service, such as OnStar, with navigation  $225
Instruments, Lights, and Mirrors 
Auto-dimming headlights  $200
Auto-dimming passenger-side mirror$75$75 
Compass$0$0 
Fog light, rear$100$100 
Head-up display (HUD)  $350
Headlight washers  $50
Mirror tilt-down in reverse$25$25 
Power-folding mirrors$50$50 
Steering-linked headlights$150$150 
Seats and Interior Trim 
Cooled or ventilated front seats  $300
Folding second row seats$300$300 
Leather-wrapped steering wheel$150$150 
Wood/leather-wrapped steering wheel  $150
Suspension, Wheels, and Tires 
Adaptive dampers - electrical  $500
Performance steering system (optional)  $0
Sport suspension (upgrade)  $0
Total Value of Features$2,740$4,540$4,975
Value of Feature Adjustments$0$1,800$2,235
Value of Feature Adjustments0-1,658-2,050

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Specifications Comparison: Audi A6 vs. Cadillac STS

Model Year20062008
ModelA6STS
Body4dr Sedan4dr Sedan
Wheelbase111.9 in116.4 in
Length193.5 in196.7 in
Width73.1 in72.6 in
Height57.5 in57.6 in
Curb Weight4,013 lb.3,974 lb.
Fuel Capacity21.1 gal.17.0 gal.
Row 1 Headroom38.7 in38.7 in
Row 1 Shoulder Room57.1 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 Room55.9 in57.4 in
Row 2 Hip Room0.0 in55.6 in
Row 2 Legroom36.9 in38.3 in
Cargo Volume15.9 ft313.8 ft3

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Option Package Details
Audi A6 3.2

Premium Package
FeatureValueRequested?
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Steering-linked headlights150No
Xenon HID headlights500Yes
Memory system, driver seat200Yes
Satellite radio200Yes
Auto-dimming driver-side mirror75Yes
Compass0No
Surround sound250Yes
Storage compartment under front seat(s)50No
Power-folding mirrors50No
Auto-dimming passenger-side mirror75No
Total Requested147582%
Total Not Requested32518%
Cold Weather Package
FeatureValueRequested?
Heated second row seats200Yes
Rear seat pass-through100Yes
Ski sack50No
Total Requested30086%
Total Not Requested5014%
Technology Package
FeatureValueRequested?
Navigation system600Yes
Satellite radio200Yes
Obstacle detection, rear250Yes
Proximity key250Yes
Voice control for nav and audio100Yes
Total Requested1400100%
Total Not Requested00%

Option Package Details
Audi A6 4.2

Cold Weather Package
FeatureValueRequested?
Heated second row seats200Yes
Rear seat pass-through100Yes
Ski sack50No
Total Requested30086%
Total Not Requested5014%
Technology Package
FeatureValueRequested?
Navigation system600Yes
Obstacle detection, rear250Yes
Proximity key250Yes
Voice control for nav and audio100Yes
Total Requested1200100%
Total Not Requested00%

Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SG
FeatureValueRequested?
Adaptive shocks - electrical500No
Cooled or ventilated front seats300No
Sunroof900Yes
Adaptive cruise control450Yes
235/50WR18 tires200No
255/45WR18 tires200No
Headlight washers50No
Auto-dimming headlights200No
Xenon HID headlights500Yes
Lane departure warning system200No
Blind spot warning system200No
Head-up display (HUD)350No
Performance braking system (optional)250No
Limited-slip rear differential300No
Rear spoiler200No
Additional engine cooling0No
Power steering cooler0No
Performance steering system (optional)250No
Sport suspension (upgrade)250No
Bluetooth cell phone link100Yes
Surround sound250Yes
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100Yes
Navigation system600Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested290043%
Total Not Requested382557%

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