Audi A6 Audi A6 2006 Cadillac STS Cadillac STS 2006

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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: $50,025

Cadillac STS V6   
Difference: $2,865

Lowest Total Invoice: $45,541

Cadillac STS V6   
Difference: $3,080

Calculate Payments

  Down Payment Interest Rate Term
Model Year20062006200620062006
ModelA6A6STSSTSSTS
Trim3.24.2V6V8STS-V
Body4dr Sedan4dr Sedan4dr Sedan4dr Sedan4dr Sedan
Base Price $40,820 $53,770 $41,020 $47,520 $73,070
Base Invoice $37,572 $49,559 $37,944 $43,956 $67,704
Cold Weather Package 400 400      
Sunroof 1,450       1,200
Technology Package 3,800 3,800      
Premium Package 2,500        
Bose 330W 13 speakers 0        
Navigation system 1,800 1,800      
Polished alloy wheels 1,200 900      
Heated steering wheel 200 200      
Preferred Equipment Group 1SC     8,285    
Preferred Equipment Group 1SF       10,740  
Cold Weather Package 364 364      
Sunroof 1,320       996
Technology Package 3,458 3,458      
Premium Package 2,275        
Bose 330W 13 speakers 0        
Navigation system 1,638 1,638      
Polished alloy wheels 1,092 819      
Heated steering wheel 182 182      
Preferred Equipment Group 1SC     6,877    
Preferred Equipment Group 1SF       8,914  
Options (change) 11,350 7,100 8,285 10,740 1,200
Options (change) 10,329 6,461 6,877 8,914 996
Destination 720 720 720 720 720
Gas Tax 0 0 0 0 2,100
Total Price $52,890 $61,590 $50,025 $58,980 $77,090
Total Invoice $48,621 $56,740 $45,541 $53,590 $71,520

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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: Cadillac STS V6
TrueDelta Adjusted Price Difference: $2,950
TrueDelta Adjusted Invoice Difference: $3,157
Model Year20062006200620062006
ModelA6A6STSSTSSTS
Trim3.24.2V6V8STS-V
Body4dr Sedan4dr Sedan4dr Sedan4dr Sedan4dr Sedan
Engine255hp V6335hp V8254hp V6320hp V8469hp V8
TransmissionCVT-7T6T5T5T6
DrivetrainFWDAWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)330, 13330, 13300, 15300, 15300, 15
Tire (rear if not all the same)245/40-18245/40-18235/50-17235/50-17255/45-18
Total Price$52,890$61,590$50,025$58,980$77,090
Adjustments for Features0-1,800-85-1,335-1,800
Feature-Adjusted Total Price$52,890$59,790$49,940$57,645$75,290
Cost Above Minimum$0$6,900$0$7,705$25,350
Total Invoice$48,621$56,740$45,541$53,590$71,520
Adjustments for Features0-1,658-77-1,213-1,670
Feature-Adjusted Total Invoice$48,621$55,082$45,464$52,377$69,850
Cost Above Minimum$0$6,461$0$6,913$24,386

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Features Comparison: Audi A6 vs. Cadillac STS

Model Year20062006200620062006
ModelA6A6STSSTSSTS
Trim3.24.2V6V8STS-V
Body4dr Sedan4dr Sedan4dr Sedan4dr Sedan4dr Sedan
Transmission and Drivetrain 
7-speed manually-shiftable CVT$1100    
6-speed manually-shiftable automatic $1100  $1100
5-speed manually-shiftable automatic  $1000$1000 
FWD$0    
AWD $1700   
RWD  $0$0$0
Accessories 
Remote start  $150$150$150
Tilt/telescoping steering wheel, manual$250    
Tilt/telescoping steering wheel, power $350$350$350$350
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0   
Tires, run-flat    $150
Cargo Management 
Ski sack$50$50   
Storage compartment under front seat(s)$50$50   
Climate Control 
Heated windshield washer nozzles$15$15  $15
Rear air vents$100$100   
Rear air vents with manual controls  $150$150$150
Residual heat$50$50   
Drivetrain 
Limited-slip rear differential  $300$300$300
Exterior 
Bodyside moldings$75$75   
Laminated front side windows  $200$200$200
Rear spoiler  $200$200$200
Infotainment 
CD changer, in-dash  $325$325$325
CD changer, remote$200$200   
DVD-compatible player  $0$0$0
Satellite radio$200$200   
Telematics service, such as OnStar  $200$200$200
Instruments, Lights, and Mirrors 
Auto-dimming headlights   $200$200
Auto-dimming passenger-side mirror$75$75   
Compass$0$0   
Fog light, rear$100$100   
Headlight washers   $50$50
Mirror tilt-down in reverse$25$25   
Power-folding mirrors$50$50   
Steering-linked headlights$150$150   
Xenon HID headlights$500$500 $500$500
Seats and Interior Trim 
Cooled or ventilated front seats  $300$300 
Folding second row seats$300$300   
Leather-wrapped steering wheel$150$150  $150
Synthetic suede inserts in leather seating surfaces    $0
Upholstered instrument panel, leather    $1000
Wood/leather-wrapped steering wheel  $150$150 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical   $500 
Auto-leveling rear shocks  $200$200$200
Performance steering system (optional)  $0 $0
Sport suspension (upgrade)  $0$0$0
Total Value of Features$3,440$5,240$3,525$4,775$5,240
Value of Feature Adjustments$0$1,800$85$1,335$1,800
Value of Feature Adjustments0-1,658-77-1,213-1,670

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Specifications Comparison: Audi A6 vs. Cadillac STS

Model Year20062006
ModelA6STS
Body4dr Sedan4dr Sedan
Wheelbase111.9 in116.4 in
Length193.5 in196.3 in
Width73.1 in72.6 in
Height57.5 in57.6 in
Curb Weight4,013 lb.3,961 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

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 radio200No
Obstacle detection, rear250Yes
Proximity key250Yes
Voice control for nav and audio100Yes
Total Requested120086%
Total Not Requested20014%
Premium Package
FeatureValueRequested?
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Steering-linked headlights150No
Xenon HID headlights500Yes
Memory system, driver seat200Yes
Satellite radio200No
Auto-dimming driver-side mirror75Yes
Compass0No
Surround sound250Yes
Storage compartment under front seat(s)50No
Power-folding mirrors50No
Auto-dimming passenger-side mirror75No
Total Requested127571%
Total Not Requested52529%

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 V6

Preferred Equipment Group 1SC
FeatureValueRequested?
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Cooled or ventilated front seats300No
Sunroof900Yes
Limited-slip rear differential300No
Rear spoiler200No
Wood/leather-wrapped steering wheel0No
Performance steering system (optional)250No
Wood trim300Yes
Heated front seats200Yes
CD changer, in-dash200Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Rain-sensing wipers100Yes
Memory system, driver seat200Yes
Interior air filter0Yes
Polished alloy wheels0Yes
Rear air vents with manual controls50No
Navigation system600Yes
Heated second row seats200Yes
Universal garage door opener100Yes
Bluetooth cell phone link100Yes
Heated steering wheel100Yes
Cargo net40Yes
Surround sound250Yes
DVD-compatible player0No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested369065%
Total Not Requested195035%

Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SF
FeatureValueRequested?
Sport suspension (upgrade)250No
Adaptive shocks - electrical500No
Cooled or ventilated front seats300No
Sunroof900Yes
Limited-slip rear differential300No
Rain-sensing wipers100Yes
Xenon HID headlights500Yes
Rear spoiler200No
Wood/leather-wrapped steering wheel0No
Bluetooth cell phone link100Yes
Headlight washers50No
235/50VR17 tires200No
255/45VR17 tires200No
Auto-dimming headlights200No
Rear air vents with manual controls50No
Navigation system600Yes
Heated second row seats200Yes
Universal garage door opener100Yes
Heated steering wheel100Yes
Interior air filter0Yes
Cargo net40Yes
Surround sound250Yes
DVD-compatible player0No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Wood trim300Yes
Heated front seats200Yes
CD changer, in-dash200Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Memory system, driver seat200Yes
Polished alloy wheels0Yes
Total Requested419062%
Total Not Requested260038%

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