Cadillac DTS Cadillac DTS 2009 Mazda RX-8 Mazda RX-8 2008

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Cadillac DTS 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 DTS vs. Mazda RX-8 Invoice Comparison

Lowest Total Price: $34,905

Mazda RX-8 Automatic   
Difference: $16,385

Lowest Total Invoice: $32,139

Mazda RX-8 Automatic   
Difference: $15,402

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092008
ModelDTSRX-8
TrimV8Automatic
Body4dr Sedan4dr Coupe
Base Price $45,855 $26,435
Base Invoice $42,874 $24,458
Front buckets 0  
Cargo net 95 40
Navigation system 2,145 2,000
Sun and Sound Package 850  
Heated front seats 1,425  
FWD 0  
Grand Touring Package   5,335
Cargo mat   50
Temporary spare tire   395
Front buckets 0  
Cargo net 78 32
Navigation system 1,780 1,721
Sun and Sound Package 706  
Heated front seats 1,183  
FWD 0  
Grand Touring Package   4,922
Cargo mat   36
Temporary spare tire   320
Options (change) 4,515 7,820
Options (change) 3,747 7,031
Destination 920 650
Total Price $51,290 $34,905
Total Invoice $47,541 $32,139

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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 DTS dealer quotes or Mazda RX-8 dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Cadillac DTS vs. Mazda RX-8

Lowest Adjusted Price and Invoice: Mazda RX-8 Automatic
TrueDelta Adjusted Price Difference: $14,060
TrueDelta Adjusted Invoice Difference: $13,247
Model Year20092008
ModelDTSRX-8
TrimV8Automatic
Body4dr Sedan4dr Coupe
Engine275hp V8212hp R2
TransmissionA4T6
DrivetrainFWDRWD
EPA Fuel Economy (city/highway)15/23 MPG16/23 MPG
Audio (watts, speakers)?, 8300, 9
Tire (rear if not all the same)225/55-17225/45-18
Total Price$51,290$34,905
Adjustments for Features-2,3250
Feature-Adjusted Total Price$48,965$34,905
Total Invoice$47,541$32,139
Adjustments for Features-2,1550
Feature-Adjusted Total Invoice$45,386$32,139

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Features Comparison: Cadillac DTS vs. Mazda RX-8

Model Year20092008
ModelDTSRX-8
TrimV8Automatic
Body4dr Sedan4dr Coupe
Transmission and Drivetrain 
4-speed automatic$800 
6-speed manually-shiftable automatic $1100
FWD$0 
RWD $0
Accessories 
Power rear side windows$200 
Proximity key $250
Remote start$150 
Brakes, Airbags, and Other Safety 
Brake assist$50 
Cargo Management 
Overhead sunglass holder $25
Second-row high console $250
Climate Control 
Automatic climate control, front$200 
Dual-zone climate control$125 
Rear air vents$100 
Drivetrain 
Limited-slip rear differential $300
Exterior 
Bodyside moldings$75 
Laminated front side windows$200 
Infotainment 
Aux input$50 
Bluetooth cell phone link$100 
CD changer, in-dash $325
CD player$125 
MP3-compatible player$50 
Satellite radio$200 
Telematics service, such as OnStar, with navigation$225 
Traffic information$25 
Voice control for nav and audio$100 
Instruments, Lights, and Mirrors 
Analog clock$25 
Auto-dimming driver-side mirror$75 
Automatic headlights$125 
Compass$0 
Cornering lights$50 
Interior ambient lighting$150 
Trip computer$150 
Turn signals on or near mirrors$25 
Seats and Interior Trim 
Cooled or ventilated front seats$300 
Memory system, driver seat$200 
Power 4-way lumbar adjuster, driver seat$150 
Power 4-way lumbar adjuster, passenger seat$150 
Power fore-aft adjuster, passenger seat$100 
Power height adjuster, passenger seat$100 
Power lumbar adjuster, driver seat $100
Power recliner, passenger seat$100 
Power tilt adjuster, passenger seat$100 
Suspension, Wheels, and Tires 
Auto-leveling rear shocks$200 
Sport suspension (upgrade) $0
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$4,775$2,450
Value of Feature Adjustments$2,325$0
Value of Feature Adjustments-2,1550

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Specifications Comparison: Cadillac DTS vs. Mazda RX-8

Model Year20092008
ModelDTSRX-8
Body4dr Sedan4dr Coupe
Wheelbase115.6 in106.4 in
Length207.6 in174.3 in
Width74.8 in69.7 in
Height57.6 in52.8 in
Curb Weight4,009 lb.3,075 lb.
Fuel Capacity18.5 gal.15.9 gal.
Row 1 Headroom38.3 in38.2 in
Row 1 Shoulder Room60.0 in54.8 in
Row 1 Hip Room57.3 in53.3 in
Row 1 Legroom42.5 in42.7 in
Row 2 Headroom38.4 in36.8 in
Row 2 Shoulder Room59.2 in54.9 in
Row 2 Hip Room55.7 in48.1 in
Row 2 Legroom42.0 in32.2 in
Cargo Volume18.8 ft37.6 ft3

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Option Package Details
Cadillac DTS V8

Sun and Sound Package
FeatureValueRequested?
Sunroof900Yes
CD changer, in-dash200No
Universal garage door opener100Yes
Total Requested100083%
Total Not Requested20017%

Option Package Details
Mazda RX-8 Automatic

Grand Touring Package
FeatureValueRequested?
Leather seating surfaces900Yes
Heated mirrors25Yes
Heated front seats200Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Power tilt adjuster, driver seat100Yes
Power recliner, driver seat100Yes
Power lumbar adjuster, driver seat100Yes
Proximity key250No
Traction control100Yes
Stability control400Yes
Fog lights125Yes
Xenon HID headlights500Yes
Sunroof900Yes
CD changer, in-dash200No
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Bose, 300W, 9 speakers350No
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Limited-slip rear differential300No
225/45ZR18 tires400No
Total Requested385066%
Total Not Requested200034%

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