Pontiac G8 Pontiac G8 2009 Cadillac STS Cadillac STS 2011

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Pontiac G8 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.

Pontiac G8 vs. Cadillac STS Invoice Comparison

Lowest Total Price: $40,895

Pontiac G8 GXP   
Difference: $17,560

Lowest Total Invoice: $38,673

Pontiac G8 GXP   
Difference: $16,537

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092011
ModelG8STS
TrimGXPPremium
Body4dr Sedan4dr Sedan
Base Price $37,610 $56,380
Base Invoice $35,541 $53,279
Sunroof 900 1,200
Sunroof 747 1,056
Options (change) 900 1,200
Options (change) 747 1,056
Destination 685 875
Gas Tax 1,700 0
Total Price $40,895 $58,455
Total Invoice $38,673 $55,210

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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 Pontiac G8 dealer quotes or Cadillac STS dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Pontiac G8 vs. Cadillac STS

Lowest Adjusted Price and Invoice: Pontiac G8 GXP
TrueDelta Adjusted Price Difference: $13,035
TrueDelta Adjusted Invoice Difference: $12,263
Model Year20092011
ModelG8STS
TrimGXPPremium
Body4dr Sedan4dr Sedan
Engine415hp V8302hp V6
TransmissionT6T6
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)230, 11300, 15
Tire (rear if not all the same)245/40-19235/50-18
Total Price$40,895$58,455
Adjustments for Features0-4,525
Feature-Adjusted Total Price$40,895$53,930
Total Invoice$38,673$55,210
Adjustments for Features0-4,274
Feature-Adjusted Total Invoice$38,673$50,936

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Features Comparison: Pontiac G8 vs. Cadillac STS

Model Year20092011
ModelG8STS
TrimGXPPremium
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100
RWD$0$0
Accessories 
Heated steering wheel $100
Proximity key $250
Tilt/telescoping steering wheel, manual$250 
Tilt/telescoping steering wheel, power $350
Universal garage door opener $100
Brakes, Airbags, and Other Safety 
Obstacle detection, rear $250
Climate Control 
Automatic air recirculation $100
Interior air filter $0
Rear air vents$100 
Rear air vents with manual controls $150
Exterior 
Hood scoop$100 
Laminated front side windows $200
Infotainment 
Aux input$50 
DVD-compatible player $0
MP3-compatible player$50 
Navigation system $600
Rear seat audio controls $25
Surround sound $250
Telematics service, such as OnStar$200 
Telematics service, such as OnStar, with navigation $225
USB port$25 
Voice control for nav and audio $100
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror $75
Auto-dimming headlights $200
Auto-dimming rearview mirror $150
Compass$0 
Headlight washers $50
Heated mirrors $25
Outside temperature display $50
Turn signals on or near mirrors $25
Xenon HID headlights $500
Seats and Interior Trim 
Cooled or ventilated front seats $300
Heated second row seats $200
Leather-wrapped steering wheel$150 
Manual lumbar adjuster, driver seat$50 
Manual lumbar adjuster, passenger seat$50 
Memory system, driver seat $200
Metal pedals$75 
Power 4-way lumbar adjuster, driver seat $150
Power 4-way lumbar adjuster, passenger seat $150
Power recliner, driver seat $100
Power recliner, passenger seat $100
Wood trim $300
Wood/leather-wrapped steering wheel $150
Suspension, Wheels, and Tires 
Auto-leveling rear shocks $200
Total Value of Features$2,200$6,725
Value of Feature Adjustments$0$4,525
Value of Feature Adjustments0-4,274

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Specifications Comparison: Pontiac G8 vs. Cadillac STS

Model Year20092011
ModelG8STS
Body4dr Sedan4dr Sedan
Wheelbase114.8 in116.4 in
Length196.1 in196.7 in
Width74.8 in72.6 in
Height57.7 in57.6 in
Curb Weight3,856 lb.3,974 lb.
Fuel Capacity19.0 gal.17.0 gal.
Row 1 Headroom38.7 in38.7 in
Row 1 Shoulder Room59.1 in58.6 in
Row 1 Hip Room56.7 in54.6 in
Row 1 Legroom42.2 in42.6 in
Row 2 Headroom38.0 in37.9 in
Row 2 Shoulder Room59.1 in57.4 in
Row 2 Hip Room58.0 in55.6 in
Row 2 Legroom39.4 in38.3 in
Cargo Volume17.5 ft313.8 ft3

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See TrueDelta's information for all Sedans
See TrueDelta's information for all Pontiac models.