Cadillac STS Cadillac STS 2010 Audi A6 / S6 Audi A6 / S6 2018

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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: $70,605

Cadillac STS V8 Performance   
Difference: $9,245

Lowest Total Invoice: $66,703

Cadillac STS V8 Performance   
Difference: $7,631

Calculate Payments

  Down Payment Interest Rate Term
Model Year20102018
ModelSTSA6 / S6
TrimV8 PerformanceS6 4.0 TFSI
Body4dr Sedan4dr Sedan
Base Price $68,785 $71,900
Base Invoice $65,002 $66,868
Active steering 995  
Cold Weather Package   500
Driver Assistance Package   2,000
Sport Package   3,900
Metallic paint (extra cost)   575
Active steering 876  
Cold Weather Package   467
Driver Assistance Package   1,860
Sport Package   3,628
Metallic paint (extra cost)   536
Options (change) 995 6,975
Options (change) 876 6,491
Destination 825 975
Total Price $70,605 $79,850
Total Invoice $66,703 $74,334

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

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

Lowest Adjusted Price and Invoice: Cadillac STS V8 Performance
TrueDelta Adjusted Price Difference: $3,040
TrueDelta Adjusted Invoice Difference: $1,855
Model Year20102018
ModelSTSA6 / S6
TrimV8 PerformanceS6 4.0 TFSI
Body4dr Sedan4dr Sedan
Engine320hp V8450hp V8
TransmissionT6S7
DrivetrainRWDAWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)?, 8630, 14
Tire (rear if not all the same)235/50-18255/35-20
Total Price$70,605$79,850
Adjustments for Features0-6,205
Feature-Adjusted Total Price$70,605$73,645
Total Invoice$66,703$74,334
Adjustments for Features0-5,776
Feature-Adjusted Total Invoice$66,703$68,558

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Features Comparison: Cadillac STS vs. Audi A6 / S6

Model Year20102018
ModelSTSA6 / S6
TrimV8 PerformanceS6 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 
Adaptive cruise control$600 
Adaptive cruise control, all-speed $850
Remote start$150 
Brakes, Airbags, and Other Safety 
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, steering-based $200
Obstacle detection, front $150
Radar- or camera-based collision preparation system $0
Rearview camera $200
Rollover sensor $50
Secondary collision brake assist $25
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 
Automatic start / stop $150
Dual-mode exhaust, switchable $500
Regenerative braking $0
Exterior 
Bright-finished exhaust tip(s)$25 
Painted brake calipers (optional) $0
Rear spoiler$200 
Infotainment 
4G LTE connectivity $0
Android Auto support $100
Apple CarPlay support $100
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
Media drive $15
MP3-compatible player $50
Rear seat audio controls$25 
SD Card slot $25
Telematics service, such as OnStar, with navigation$225 
Traffic + travel information $25
USB port $25
Wi-Fi hotspot $50
Instruments, Lights, and Mirrors 
Auto-dimming passenger-side mirror $75
Compass $0
Fog light, rear $100
Fog lights$125 
Head-up display (HUD)$350 
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 
Adaptive dampers - electrical$500 
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$5,600$11,805
Value of Feature Adjustments$0$6,205
Value of Feature Adjustments0-5,776

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Specifications Comparison: Cadillac STS vs. Audi A6 / S6

Model Year20102018
ModelSTSA6 / S6
Body4dr Sedan4dr Sedan
Wheelbase116.4 in114.6 in
Length196.7 in194.2 in
Width72.6 in73.8 in
Height57.6 in57.8 in
Curb Weight3,974 lb.3,804 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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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?
Auto-dimming headlights200Yes
Radar- or camera-based collision preparation system0No
Lane departure warning200Yes
Adaptive cruise control, all-speed700No
Automatic braking, low-speed200No
Forward collision warning200No
Lane departure prevention, steering-based200No
Total Requested40024%
Total Not Requested130076%
Sport Package
FeatureValueRequested?
Active steering1000Yes
Sport exhaust0No
Active rear differential500No
Painted brake calipers (optional)0No
Total Requested100067%
Total Not Requested50033%

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