Audi A8 / S8 Audi A8 / S8 2018 Cadillac STS Cadillac STS 2008

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Audi A8 / S8 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 A8 / S8 vs. Cadillac STS Invoice Comparison

Lowest Total Price: $81,650

Cadillac STS STS-V   
Difference: $35,225

Lowest Total Invoice: $74,954

Cadillac STS STS-V   
Difference: $33,809

Calculate Payments

  Down Payment Interest Rate Term
Model Year20182008
ModelA8 / S8STS
TrimS8 PlusSTS-V
Body4dr Sedan4dr Sedan
Base Price $115,900 $77,575
Base Invoice $107,788 $71,083
Sunroof   1,200
Sunroof   996
Options (change) 0 1,200
Options (change) 0 996
Destination 975 775
Gas Tax 0 2,100
Total Price $116,875 $81,650
Total Invoice $108,763 $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

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Request free, no-obligation Audi A8 / S8 dealer quotes or Cadillac STS dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Audi A8 / S8 vs. Cadillac STS

Lowest Adjusted Price and Invoice: Cadillac STS STS-V
TrueDelta Adjusted Price Difference: $25,670
TrueDelta Adjusted Invoice Difference: $24,917
Model Year20182008
ModelA8 / S8STS
TrimS8 PlusSTS-V
Body4dr Sedan4dr Sedan
Engine605hp V8469hp V8
TransmissionT8T6
DrivetrainAWDRWD
EPA Fuel Economy (city/highway)14/24 MPG13/19 MPG
Audio (watts, speakers)630, 14300, 15
Tire (rear if not all the same)275/35-21255/45-18
Total Price$116,875$81,650
Adjustments for Features-9,5550
Feature-Adjusted Total Price$107,320$81,650
Total Invoice$108,763$74,954
Adjustments for Features-8,8920
Feature-Adjusted Total Invoice$99,871$74,954

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Features Comparison: Audi A8 / S8 vs. Cadillac STS

Model Year20182008
ModelA8 / S8STS
TrimS8 PlusSTS-V
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
8-speed manually-shiftable automatic$1300 
6-speed manually-shiftable automatic $1100
AWD$1700 
RWD $0
Accessories 
Active noise reduction$0 
Hands-free trunk or liftgate$100 
Heated steering wheel $100
Power door closers$300 
Power trunk closer$350 
Remote start $150
Remote window/roof operation$15 
Sunshade, rear, power$225 
Sunshades, second row, power$225 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Around view cameras$500 
Brake- or yaw-sensor-initiated collision preparation system$0 
Collision preparation system, rear$100 
Full-size spare tire$225 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Lane departure warning $200
Obstacle detection, front$150 
Rear side airbags$300 
Rollover sensor$50 
Temporary spare tire $150
Tires, run-flat $150
Wide-view front camera$150 
Wide-view rear camera$0 
Cargo Management 
Air-conditioned storage compartment$50 
Rear seat pass-through $100
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 
Limited-slip rear differential $300
Engine / Motor 
Dual-mode exhaust, switchable$500 
Exterior 
Body kit$0 
Laminated rear side windows$100 
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 
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 
Analog clock$25 
Auto-dimming passenger-side mirror$75 
Compass$0 
Cornering lights$50 
Fog light, rear$100 
Fog lights $125
Interior ambient lighting, configurable$150 
LED headlights$1000 
Mirror tilt-down in reverse$25 
Power-folding mirrors$50 
Steering-linked headlights$150 
Xenon HID headlights $500
Seats and Interior Trim 
Carbon fiber trim$200 
Cooled or ventilated front seats$300 
Heated second row seats $200
Massage, driver seat$100 
Massage, passenger seat$100 
Memory system, passenger seat$150 
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Power seat belt height adjusters, front row$25 
Power seatback bolsters, driver seat$100 
Power seatback bolsters, passenger seat$100 
Power thigh bolsters, driver seat$100 
Power thigh bolsters, passenger seat$100 
Power thigh support length adjuster, driver seat$100 
Power thigh support length adjuster, passenger seat$100 
Power upper seatback recliner, driver seat$100 
Power upper seatback recliner, passenger seat$100 
Synthetic suede headliner$650 
Synthetic suede inserts in leather seating surfaces $0
Upholstered instrument panel$300 
Upholstered instrument panel, leather $1000
Wood trim $300
Suspension, Wheels, and Tires 
Active steering$1000 
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
Sport suspension (upgrade) $0
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$14,855$5,300
Value of Feature Adjustments$9,555$0
Value of Feature Adjustments-8,8920

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Specifications Comparison: Audi A8 / S8 vs. Cadillac STS

Model Year20182008
ModelA8 / S8STS
Body4dr Sedan4dr Sedan
Wheelbase117.8 in116.4 in
Length202.6 in196.7 in
Width76.7 in72.6 in
Height57.4 in57.6 in
Curb Weight4,685 lb.4,233 lb.
Fuel Capacity21.7 gal.17.0 gal.
Row 1 Headroom37.2 in38.7 in
Row 1 Shoulder Room59.1 in58.6 in
Row 1 Hip Room0.0 in54.6 in
Row 1 Legroom41.4 in42.6 in
Row 2 Headroom38.1 in37.9 in
Row 2 Shoulder Room57.8 in57.4 in
Row 2 Hip Room0.0 in55.6 in
Row 2 Legroom38.7 in38.3 in
Cargo Volume14.2 ft313.8 ft3

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