Cadillac STS Cadillac STS 2011 Pontiac Grand Prix Pontiac Grand Prix 2006

We are 103,000+ car owners sharing real-world car information.

Join Us

Cadillac STS vs. Pontiac Grand Prix 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. Pontiac Grand Prix Invoice Comparison

Lowest Total Price: $32,640

Pontiac Grand Prix GXP   
Difference: $23,755

Lowest Total Invoice: $30,390

Pontiac Grand Prix GXP   
Difference: $22,640

Calculate Payments

  Down Payment Interest Rate Term
Model Year201120112006
ModelSTSSTSGrand Prix
TrimLuxuryPremiumGXP
Body4dr Sedan4dr Sedan4dr Sedan
Base Price $50,820 $56,380 $27,330
Base Invoice $48,024 $53,279 $25,827
Premium Luxury Collection 4,600 2,840  
Engine-block heater 100 100 50
Sun and Sound Package     1,090
Premium Package     1,015
Floor mats     80
Satellite radio     325
Side curtain airbags     395
Navigation system     1,695
Premium Luxury Collection 4,048 2,499  
Engine-block heater 83 83 42
Sun and Sound Package     905
Premium Package     842
Floor mats     66
Satellite radio     289
Side curtain airbags     352
Navigation system     1,407
Options (change) 4,700 2,940 4,650
Options (change) 4,131 2,582 3,903
Destination 875 875 660
Total Price $56,395 $60,195 $32,640
Total Invoice $53,030 $56,736 $30,390

Return to top

While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

Want to find out how much dealers are willing to discount these cars?

Request free, no-obligation Cadillac STS dealer quotes or Pontiac Grand Prix dealer quotes from dealers using our car quote form.

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

TrueDelta Value Comparison: Cadillac STS vs. Pontiac Grand Prix

Lowest Adjusted Price and Invoice: Pontiac Grand Prix GXP
TrueDelta Adjusted Price Difference: $20,555
TrueDelta Adjusted Invoice Difference: $19,631
Model Year201120112006
ModelSTSSTSGrand Prix
TrimLuxuryPremiumGXP
Body4dr Sedan4dr Sedan4dr Sedan
Engine302hp V6302hp V6303hp V8
TransmissionT6T6T4
DrivetrainRWDRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG
Audio (watts, speakers)?, 8300, 15245, 9
Tire (rear if not all the same)235/50-17235/50-18255/45-18
Total Price$56,395$60,195$32,640
Adjustments for Features-3,200-5,6250
Feature-Adjusted Total Price$53,195$54,570$32,640
Cost Above Minimum$0$1,375$0
Total Invoice$53,030$56,736$30,390
Adjustments for Features-3,009-5,3020
Feature-Adjusted Total Invoice$50,021$51,434$30,390
Cost Above Minimum$0$1,413$0

Return to top

Features Comparison: Cadillac STS vs. Pontiac Grand Prix

Model Year201120112006
ModelSTSSTSGrand Prix
TrimLuxuryPremiumGXP
Body4dr Sedan4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100 
4-speed manually-shiftable automatic  $900
RWD$0$0 
FWD  $0
Accessories 
Heated steering wheel$100$100 
Proximity key$250$250 
Tilt steering wheel, manual  $150
Tilt/telescoping steering wheel, power$350$350 
Universal garage door opener$100$100 
Brakes, Airbags, and Other Safety 
Blind spot warning system$200$200 
Brake assist$50$50 
Front side airbags$350$350 
Lane departure warning$200$200 
Obstacle detection, rear$250$250 
Cargo Management 
Overhead sunglass holder  $25
Rear seat pass-through$100$100 
Climate Control 
Rear air vents with manual controls$150$150 
Drivetrain 
Limited-slip rear differential $300 
Exterior 
Bodyside moldings  $75
Laminated front side windows$200$200 
Rear spoiler $200$200
Infotainment 
Bluetooth cell phone link$100$100 
CD changer, in-dash$325$325 
CD player  $125
DVD-compatible player $0 
Navigation system $600$600
Rear seat audio controls $25 
Surround sound $250 
Telematics service, such as OnStar  $200
Telematics service, such as OnStar, with navigation$225$225 
Voice control for nav and audio $100 
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror$75$75 
Auto-dimming headlights $200 
Auto-dimming rearview mirror$150$150 
Compass$0 $0
Headlight washers $50 
Heated mirrors$25$25 
Turn signals on or near mirrors$25$25 
Xenon HID headlights $500 
Seats and Interior Trim 
Center armrest(s), second row$50$50 
Cooled or ventilated front seats$300$300 
Folding passenger seat  $150
Folding second row seats  $300
Heated second row seats$200$200 
Leather-wrapped steering wheel  $150
Memory system, driver seat$200$200 
Power 4-way lumbar adjuster, passenger seat$150$150 
Power fore-aft adjuster, passenger seat$100$100 
Power height adjuster, passenger seat$100$100 
Power recliner, driver seat$100$100 
Power recliner, passenger seat$100$100 
Power tilt adjuster, passenger seat$100$100 
Synthetic suede inserts in leather seating surfaces  $0
Wood trim$300$300 
Wood/leather-wrapped steering wheel$150$150 
Suspension, Wheels, and Tires 
Auto-leveling rear shocks $200 
Performance steering system (optional)  $0
Sport suspension (upgrade) $0$0
Transmission 
Steering-wheel-mounted transmission controls  $100
Total Value of Features$6,175$8,600$2,975
Value of Feature Adjustments$3,200$5,625$0
Value of Feature Adjustments-3,009-5,3020

Return to top

Specifications Comparison: Cadillac STS vs. Pontiac Grand Prix

Model Year20112006
ModelSTSGrand Prix
Body4dr Sedan4dr Sedan
Wheelbase116.4 in110.5 in
Length196.7 in198.3 in
Width72.6 in71.6 in
Height57.6 in55.9 in
Curb Weight3,974 lb.3,478 lb.
Fuel Capacity17.0 gal.17.0 gal.
Row 1 Headroom38.7 in38.8 in
Row 1 Shoulder Room58.6 in58.0 in
Row 1 Hip Room54.6 in54.5 in
Row 1 Legroom42.6 in42.2 in
Row 2 Headroom37.9 in36.2 in
Row 2 Shoulder Room57.4 in54.8 in
Row 2 Hip Room55.6 in54.3 in
Row 2 Legroom38.3 in36.2 in
Cargo Volume13.8 ft316.0 ft3

Return to top

Option Package Details
Cadillac STS Luxury

Premium Luxury Collection
FeatureValueRequested?
Sunroof900Yes
Termporary spare tire150No
Head-up display (HUD)350Yes
Lane departure warning system200No
Blind spot warning system200No
Total Requested125069%
Total Not Requested55031%

Option Package Details
Cadillac STS Premium

Premium Luxury Collection
FeatureValueRequested?
Sunroof900Yes
Termporary spare tire150No
Head-up display (HUD)350Yes
Lane departure warning system200No
Blind spot warning system200No
Total Requested125069%
Total Not Requested55031%

Option Package Details
Pontiac Grand Prix GXP

Navigation system
FeatureValueRequested?
Navigation system600Yes
Monsoon, 245W, 9 speakers (with subwoofer)350No
Total Requested60063%
Total Not Requested35037%
Sun and Sound Package
FeatureValueRequested?
Sunroof900Yes
CD changer, in-dash200No
Monsoon, 245W, 9 speakers (with subwoofer)350No
Total Requested90062%
Total Not Requested55038%
Premium Package
FeatureValueRequested?
Leather seating surfaces900Yes
Automatic climate control, front200Yes
Heated front seats200Yes
Folding passenger seat150No
Dual-zone climate control125Yes
Synthetic suede inserts in leather seating surfaces0No
Total Requested142590%
Total Not Requested15010%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

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