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Buick Regal 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.

Buick Regal vs. Cadillac STS Invoice Comparison

Lowest Total Price: $39,335

Buick Regal   
Difference: $30,990

Lowest Total Invoice: $37,454

Buick Regal   
Difference: $26,918

Calculate Payments

  Down Payment Interest Rate Term
Model Year20152009
ModelRegalSTS
TrimBaseV8
Body4dr Sedan4dr Sedan
Base Price $29,990 $55,910
Base Invoice $28,790 $52,276
Driver Confidence Package 1,040  
Sunroof 1,000  
Premium II Package 4,110  
Engine-block heater 75 100
Chrome-plated alloy wheels 1,000  
Adaptive cruise control, all-speed 1,195  
Preferred Equipment Group 1SG   11,940
Performance Handling Package   1,600
Driver Confidence Package 915  
Sunroof 880  
Premium II Package 3,946  
Engine-block heater 66 83
Chrome-plated alloy wheels 880  
Adaptive cruise control, all-speed 1,052  
Preferred Equipment Group 1SG   9,910
Performance Handling Package   1,328
Options (change) 8,420 13,640
Options (change) 7,739 11,321
Destination 925 775
Total Price $39,335 $70,325
Total Invoice $37,454 $64,372

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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

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

Request free, no-obligation Buick Regal dealer quotes or Cadillac STS 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: Buick Regal vs. Cadillac STS

Lowest Adjusted Price and Invoice: Buick Regal
TrueDelta Adjusted Price Difference: $29,315
TrueDelta Adjusted Invoice Difference: $25,385
Model Year20152009
ModelRegalSTS
TrimBaseV8
Body4dr Sedan4dr Sedan
Engine259hp I4320hp V8
TransmissionT6T6
DrivetrainFWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)?, 9300, 15
Tire (rear if not all the same)235/50-18255/45-18
Total Price$39,335$70,325
Adjustments for Features0-1,675
Feature-Adjusted Total Price$39,335$68,650
Total Invoice$37,454$64,372
Adjustments for Features0-1,533
Feature-Adjusted Total Invoice$37,454$62,839

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Features Comparison: Buick Regal vs. Cadillac STS

Model Year20152009
ModelRegalSTS
TrimBaseV8
Body4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100
FWD$0 
RWD $0
Accessories 
AC power outlet$100 
Adaptive cruise control $600
Adaptive cruise control, all-speed$850 
Remote app$25 
Tilt/telescoping steering wheel, manual$250 
Tilt/telescoping steering wheel, power $350
Brakes, Airbags, and Other Safety 
Cross-traffic warning, rear$100 
Following distance indicator$25 
Forward collision warning$200 
Radar- or camera-based collision preparation system$0 
Rear side airbags$300 
Rearview camera$200 
Rollover sensor$50 
Vehicle health reports$0 
Climate Control 
Automatic air recirculation $100
Rain-sensing wipers $175
Rear air vents$100 
Rear air vents with manual controls $150
Variable intermittent wipers$75 
Drivetrain 
Limited-slip rear differential $300
Exterior 
Active grille shutters$0 
Laminated front side windows $200
Rear spoiler $200
Infotainment 
4G LTE connectivity$0 
App support$0 
Aux input$50 
Bluetooth audio streaming$25 
CD changer, in-dash $325
CD player$125 
DVD-compatible player $0
MP3-compatible player$50 
Rear seat audio controls $25
Siri Eyes Free support$0 
SMS text-to-speech reader$25 
Surround sound $250
USB port$25 
Voice control for external devices$0 
Wi-Fi hotspot$50 
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror $75
Auto-dimming headlights $200
Compass$0 
Head-up display (HUD) $350
Headlight washers $50
Interior ambient lighting$150 
Seats and Interior Trim 
Cooled or ventilated front seats $300
Folding second row seats$300 
Heated second row seats $200
Leather-wrapped steering wheel$150 
Power 4-way lumbar adjuster, driver seat $150
Power 4-way lumbar adjuster, passenger seat $150
Power lumbar adjuster, driver seat$100 
Power lumbar adjuster, passenger seat$100 
Wood trim $300
Wood/leather-wrapped steering wheel $150
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500
Performance steering system (optional) $0
Sport suspension (upgrade) $0
Total Value of Features$4,525$6,200
Value of Feature Adjustments$0$1,675
Value of Feature Adjustments0-1,533

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See a complete comparison of Buick Regal vs. Cadillac STS features.

Specifications Comparison: Buick Regal vs. Cadillac STS

Model Year20152009
ModelRegalSTS
Body4dr Sedan4dr Sedan
Wheelbase107.8 in116.4 in
Length190.2 in196.7 in
Width73.1 in72.6 in
Height58.4 in57.6 in
Curb Weight3,693 lb.3,974 lb.
Fuel Capacity18.0 gal.17.0 gal.
Row 1 Headroom38.8 in38.7 in
Row 1 Shoulder Room56.7 in58.6 in
Row 1 Hip Room55.4 in54.6 in
Row 1 Legroom42.1 in42.6 in
Row 2 Headroom36.8 in37.9 in
Row 2 Shoulder Room54.4 in57.4 in
Row 2 Hip Room52.3 in55.6 in
Row 2 Legroom37.3 in38.3 in
Cargo Volume14.2 ft313.8 ft3

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See a complete comparison of Buick Regal vs. Cadillac STS specs.

Option Package Details
Buick Regal

Driver Confidence Package
FeatureValueRequested?
Memory system, driver seat200Yes
Lane departure warning system200Yes
Blind spot warning system200Yes
Rear cross-traffic detection100No
Forward collision warning200No
Following distance indicator25No
Total Requested60065%
Total Not Requested32535%
Premium II Package
FeatureValueRequested?
Navigation system600Yes
Rear side airbags300No
Xenon HID headlights500Yes
Bose, 9 speakers (with subwoofer)350No
Voice control for nav and audio75Yes
Speed limit information0No
Power tilt adjuster, passenger seat100Yes
Obstacle detection, rear250Yes
Heated steering wheel100Yes
AC power outlet100No
Remote start150Yes
Proximity key250Yes
Power recliner, passenger seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power lumbar adjuster, passenger seat100Yes
Universal garage door opener100Yes
Total Requested242576%
Total Not Requested75024%

Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SG
FeatureValueRequested?
Adaptive shocks - electrical500No
Cooled or ventilated front seats300No
Sunroof900Yes
Adaptive cruise control450Yes
235/50WR18 tires200No
255/45WR18 tires200No
Termporary spare tire150Yes
Xenon HID headlights500Yes
Headlight washers50No
Auto-dimming headlights200No
Head-up display (HUD)350No
Lane departure warning system200Yes
Blind spot warning system200Yes
Performance steering system (optional)250No
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Limited-slip rear differential300No
Rear spoiler200No
Additional engine cooling0No
Power steering cooler0No
Navigation system600Yes
Surround sound250No
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested310046%
Total Not Requested367554%
Performance Handling Package
FeatureValueRequested?
Performance braking system (optional)250No
255/45ZR18 tires400No
Chrome-plated alloy wheels500Yes
Total Requested50043%
Total Not Requested65057%

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