Cadillac STS Cadillac STS 2006 Buick Regal Buick Regal 2014

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Cadillac STS vs. Buick Regal 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. Buick Regal Invoice Comparison

Lowest Total Price: $39,530

Buick Regal GS   
Difference: $19,450

Lowest Total Invoice: $37,850

Buick Regal GS   
Difference: $15,740

Calculate Payments

  Down Payment Interest Rate Term
Model Year200620062014
ModelSTSSTSRegal
TrimV8STS-VGS
Body4dr Sedan4dr Sedan4dr Sedan
Base Price $47,520 $73,070 $36,905
Base Invoice $43,956 $67,704 $35,429
Preferred Equipment Group 1SF 10,740    
Sunroof   1,200 1,000
255/35ZR20     700
Preferred Equipment Group 1SF 8,914    
Sunroof   996 880
255/35ZR20     616
Options (change) 10,740 1,200 1,700
Options (change) 8,914 996 1,496
Destination 720 720 925
Gas Tax 0 2,100 0
Total Price $58,980 $77,090 $39,530
Total Invoice $53,590 $71,520 $37,850

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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 Buick Regal dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Cadillac STS vs. Buick Regal

Lowest Adjusted Price and Invoice: Buick Regal GS
TrueDelta Adjusted Price Difference: $18,825
TrueDelta Adjusted Invoice Difference: $15,172
Model Year200620062014
ModelSTSSTSRegal
TrimV8STS-VGS
Body4dr Sedan4dr Sedan4dr Sedan
Engine320hp V8469hp V8259hp I4
TransmissionT5T6T6
DrivetrainRWDRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG
Audio (watts, speakers)300, 15300, 15?, 9
Tire (rear if not all the same)235/50-17255/45-18255/35-20
Total Price$58,980$77,090$39,530
Adjustments for Features-625-1,0900
Feature-Adjusted Total Price$58,355$76,000$39,530
Cost Above Minimum$0$17,645$0
Total Invoice$53,590$71,520$37,850
Adjustments for Features-568-1,0110
Feature-Adjusted Total Invoice$53,022$70,509$37,850
Cost Above Minimum$0$17,487$0

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Features Comparison: Cadillac STS vs. Buick Regal

Model Year200620062014
ModelSTSSTSRegal
TrimV8STS-VGS
Body4dr Sedan4dr Sedan4dr Sedan
Transmission and Drivetrain 
5-speed manually-shiftable automatic$1000  
6-speed manually-shiftable automatic $1100$1100
RWD$0$0 
FWD  $0
Accessories 
AC power outlet  $100
Tilt/telescoping steering wheel, manual  $250
Tilt/telescoping steering wheel, power$350$350 
Brakes, Airbags, and Other Safety 
Obstacle detection, front  $150
Rear side airbags  $300
Rearview camera  $200
Rollover sensor  $50
Tires, run-flat $150 
Climate Control 
Heated windshield washer nozzles $15 
Rain-sensing wipers$175$175 
Rear air vents  $100
Rear air vents with manual controls$150$150 
Variable intermittent wipers  $75
Drivetrain 
Limited-slip rear differential$300$300 
Exterior 
Active grille shutters  $0
Body kit  $0
Laminated front side windows$200$200 
Infotainment 
App support  $0
Aux input  $50
Bluetooth audio streaming  $25
CD changer, in-dash$325$325 
CD player  $125
DVD-compatible player$0$0 
HD radio  $50
MP3-compatible player  $50
Satellite radio  $200
Siri Eyes Free support  $0
SMS text-to-speech reader  $25
Surround sound$250$250 
Telematics service, such as OnStar$200$200 
Telematics service, such as OnStar, with navigation  $225
Voice control for external devices  $0
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror$75$75 
Auto-dimming headlights$200$200 
Compass  $0
Fog lights$125$125 
Headlight washers$50$50 
Large color reconfigurable instrument cluster display  $250
Performance meter  $150
Seats and Interior Trim 
Cooled or ventilated front seats$300  
Folding second row seats  $300
Heated second row seats$200$200 
Leather-wrapped steering wheel $150$150
Memory system, driver seat$200$200 
Synthetic suede inserts in leather seating surfaces $0 
Upholstered instrument panel, leather $1000 
Wood trim$300$300 
Wood/leather-wrapped steering wheel$150  
Suspension, Wheels, and Tires 
Adaptive dampers - electrical$500 $500
Auto-leveling rear shocks$200$200 
Electronic systems calibration selector  $200
Performance steering system (optional) $0 
Total Value of Features$5,250$5,715$4,625
Value of Feature Adjustments$625$1,090$0
Value of Feature Adjustments-568-1,0110

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Specifications Comparison: Cadillac STS vs. Buick Regal

Model Year20062014
ModelSTSRegal
Body4dr Sedan4dr Sedan
Wheelbase116.4 in107.8 in
Length196.3 in190.2 in
Width72.6 in73.1 in
Height57.6 in58.4 in
Curb Weight3,961 lb.3,693 lb.
Fuel Capacity17.0 gal.18.0 gal.
Row 1 Headroom38.7 in38.8 in
Row 1 Shoulder Room58.6 in56.7 in
Row 1 Hip Room54.6 in55.4 in
Row 1 Legroom42.6 in42.1 in
Row 2 Headroom37.9 in36.8 in
Row 2 Shoulder Room57.4 in54.4 in
Row 2 Hip Room55.6 in52.3 in
Row 2 Legroom38.3 in37.3 in
Cargo Volume13.8 ft314.2 ft3

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Option Package Details
Cadillac STS V8

Preferred Equipment Group 1SF
FeatureValueRequested?
Sport suspension (upgrade)250Yes
Adaptive shocks - electrical500Yes
Cooled or ventilated front seats300No
Sunroof900Yes
Limited-slip rear differential300No
Rain-sensing wipers100No
Xenon HID headlights500Yes
Rear spoiler200Yes
Wood/leather-wrapped steering wheel0No
Bluetooth cell phone link100Yes
Headlight washers50No
235/50VR17 tires200No
255/45VR17 tires200No
Auto-dimming headlights200No
Heated steering wheel100Yes
Interior air filter0Yes
Cargo net40Yes
Surround sound250No
DVD-compatible player0No
Voice control for nav and audio100Yes
Rear air vents with manual controls50No
Navigation system600Yes
Heated second row seats200No
Universal garage door opener100Yes
Bose, 300W, 15 speakers (with subwoofer)350No
Power 4-way lumbar adjuster, driver seat150Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Memory system, driver seat200No
Polished alloy wheels0Yes
Wood trim300No
Heated front seats200Yes
CD changer, in-dash200No
Total Requested389057%
Total Not Requested290043%

Option Package Details
Buick Regal GS

255/35ZR20 tires
FeatureValueRequested?
255/35ZR20 tires400No
Polished alloy wheels350Yes
Total Requested35047%
Total Not Requested40053%

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