Cadillac STS Cadillac STS 2011 Mazda RX-8 Mazda RX-8 2010

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Cadillac STS vs. Mazda RX-8 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. Mazda RX-8 Invoice Comparison

Lowest Total Price: $35,845

Mazda RX-8 Grand Touring   
Difference: $21,350

Lowest Total Invoice: $33,033

Mazda RX-8 Grand Touring   
Difference: $20,706

Calculate Payments

  Down Payment Interest Rate Term
Model Year201120112010
ModelSTSSTSRX-8
TrimLuxuryPremiumGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Base Price $50,820 $56,380 $31,960
Base Invoice $48,024 $53,279 $29,566
Luxury Level Two Package 3,950    
Temporary spare tire 350 350 395
Sunroof 1,200 1,200  
6-speed shiftable automatic     700
Cargo net     40
Navigation system     2,000
Luxury Level Two Package 3,476    
Temporary spare tire 308 308 320
Sunroof 1,056 1,056  
6-speed shiftable automatic     645
Cargo net     32
Navigation system     1,720
Options (change) 5,500 1,550 3,135
Options (change) 4,840 1,364 2,717
Destination 875 875 750
Total Price $57,195 $58,805 $35,845
Total Invoice $53,739 $55,518 $33,033

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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 Cadillac STS dealer quotes or Mazda RX-8 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. Mazda RX-8

Lowest Adjusted Price and Invoice: Mazda RX-8 Grand Touring
TrueDelta Adjusted Price Difference: $18,450
TrueDelta Adjusted Invoice Difference: $17,981
Model Year201120112010
ModelSTSSTSRX-8
TrimLuxuryPremiumGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Engine302hp V6302hp V6212hp R2
TransmissionT6T6T6
DrivetrainRWDRWDRWD
EPA Fuel Economy (city/highway)17/26 MPG17/26 MPG16/23 MPG
Audio (watts, speakers)300, 15300, 15300, 9
Tire (rear if not all the same)235/50-17235/50-18225/45-18
Total Price$57,195$58,805$35,845
Adjustments for Features-2,900-3,6000
Feature-Adjusted Total Price$54,295$55,205$35,845
Cost Above Minimum$0$910$0
Total Invoice$53,739$55,518$33,033
Adjustments for Features-2,725-3,3990
Feature-Adjusted Total Invoice$51,014$52,119$33,033
Cost Above Minimum$0$1,105$0

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Features Comparison: Cadillac STS vs. Mazda RX-8

Model Year201120112010
ModelSTSSTSRX-8
TrimLuxuryPremiumGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100$1100
RWD$0$0$0
Accessories 
Heated steering wheel$100$100 
Power rear side windows$200$200 
Remote start$150$150 
Tilt steering wheel, manual  $150
Tilt/telescoping steering wheel, power$350$350 
Brakes, Airbags, and Other Safety 
Brake assist$50$50 
Obstacle detection, rear$250$250 
Cargo Management 
Overhead sunglass holder  $25
Second-row high console  $250
Climate Control 
Automatic air recirculation$100$100 
Dual-zone climate control$125$125 
Rain-sensing wipers  $175
Rear air vents with manual controls$150$150 
Variable intermittent wipers$75$75 
Drivetrain 
Limited-slip rear differential $300$300
Exterior 
Laminated front side windows$200$200 
Rear spoiler $200 
Infotainment 
Aux input  $50
DVD-compatible player$0$0 
MP3-compatible player  $50
Rear seat audio controls$25$25 
Telematics service, such as OnStar, with navigation$225$225 
Voice control for nav and audio$100$100 
Instruments, Lights, and Mirrors 
Auto-dimming driver-side mirror$75$75 
Auto-dimming headlights$200$200 
Compass$0  
Headlight washers$50$50 
Trip computer$150$150 
Turn signals on or near mirrors$25$25 
Seats and Interior Trim 
Cooled or ventilated front seats$300$300 
Heated second row seats$200$200 
Leather-wrapped steering wheel  $150
Power 4-way lumbar adjuster, driver seat$150$150 
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 lumbar adjuster, driver seat  $100
Power recliner, passenger seat$100$100 
Power tilt adjuster, passenger seat$100$100 
Wood trim$300$300 
Wood/leather-wrapped steering wheel$150$150 
Suspension, Wheels, and Tires 
Alloy wheels  $350
Auto-leveling rear shocks $200 
Polished alloy wheels$350$350 
Sport suspension (upgrade) $0 
Transmission 
Steering-wheel-mounted transmission controls  $100
Total Value of Features$5,700$6,400$2,800
Value of Feature Adjustments$2,900$3,600$0
Value of Feature Adjustments-2,725-3,3990

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Specifications Comparison: Cadillac STS vs. Mazda RX-8

Model Year20112010
ModelSTSRX-8
Body4dr Sedan4dr Coupe
Wheelbase116.4 in106.4 in
Length196.7 in175.6 in
Width72.6 in69.7 in
Height57.6 in52.8 in
Curb Weight3,973 lb.3,094 lb.
Fuel Capacity17.0 gal.15.9 gal.
Row 1 Headroom38.7 in38.2 in
Row 1 Shoulder Room58.6 in54.8 in
Row 1 Hip Room54.6 in53.3 in
Row 1 Legroom42.6 in42.7 in
Row 2 Headroom37.9 in36.8 in
Row 2 Shoulder Room57.4 in54.9 in
Row 2 Hip Room55.6 in48.1 in
Row 2 Legroom38.3 in32.2 in
Cargo Volume13.8 ft37.6 ft3

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Option Package Details
Cadillac STS Luxury

Luxury Level Two Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50No
Auto-dimming headlights200No
Navigation system600Yes
Surround sound250Yes
DVD-compatible player0No
Rear seat audio controls25No
Voice control for nav and audio100No
Bose, 300W, 15 speakers (with subwoofer)350No
Total Requested135065%
Total Not Requested72535%

Option Package Details
Mazda RX-8 Grand Touring

6-speed manually-shiftable automatic
FeatureValueRequested?
6-speed manually-shiftable automatic0Yes
1.3L R2
OHV-2v
212 hp@7500
159 lb-ft@5500
1000Yes
Steering-wheel-mounted transmission controls100No
Total Requested100091%
Total Not Requested1009%

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