Buick Regal Buick Regal 2015 Mazda RX-8 Mazda RX-8 2007

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

Join Us

Buick Regal 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.

Buick Regal vs. Mazda RX-8 Invoice Comparison

Lowest Total Price: $35,795

Mazda RX-8 Automatic   
Difference: $370

Lowest Total Invoice: $32,836

Mazda RX-8 Automatic   
Difference: $1,828

Calculate Payments

  Down Payment Interest Rate Term
Model Year201520152007
ModelRegalRegalRX-8
TrimBaseGSAutomatic
Body4dr Sedan4dr Sedan4dr Coupe
Base Price $29,990 $37,385 $26,435
Base Invoice $28,790 $35,890 $24,458
Premium II Package 4,110    
All-weather floor mats 140 140 60
Sunroof 1,000 1,000  
Grand Touring Package     5,335
Navigation system     2,000
Body kit     970
Rear spoiler     360
Cargo net     40
Premium II Package 3,946    
All-weather floor mats 123 123 45
Sunroof 880 880  
Grand Touring Package     4,922
Navigation system     1,721
Body kit     775
Rear spoiler     288
Cargo net     32
Options (change) 5,250 1,140 8,765
Options (change) 4,949 1,003 7,783
Destination 925 925 595
Total Price $36,165 $39,450 $35,795
Total Invoice $34,664 $37,818 $32,836

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 Buick Regal 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: Buick Regal vs. Mazda RX-8

Lowest Adjusted Price and Invoice: Buick Regal
TrueDelta Adjusted Price Difference: $2,430
TrueDelta Adjusted Invoice Difference: $856
Model Year201520152007
ModelRegalRegalRX-8
TrimBaseGSAutomatic
Body4dr Sedan4dr Sedan4dr Coupe
Engine259hp I4259hp I4212hp R2
TransmissionT6T6T6
DrivetrainFWDFWDRWD
EPA Fuel Economy (city/highway)21/30 MPG21/30 MPG18/25 MPG
Audio (watts, speakers)?, 9?, 9300, 9
Tire (rear if not all the same)235/50-18245/40-19225/45-18
Total Price$36,165$39,450$35,795
Adjustments for Features-2,800-4,1250
Feature-Adjusted Total Price$33,365$35,325$35,795
Cost Above Minimum$0$1,960$0
Total Invoice$34,664$37,818$32,836
Adjustments for Features-2,684-3,9540
Feature-Adjusted Total Invoice$31,980$33,864$32,836
Cost Above Minimum$0$1,884$0

Return to top

Features Comparison: Buick Regal vs. Mazda RX-8

Model Year201520152007
ModelRegalRegalRX-8
TrimBaseGSAutomatic
Body4dr Sedan4dr Sedan4dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100$1100
FWD$0$0 
RWD  $0
Accessories 
AC power outlet$100$100 
Heated steering wheel$100$100 
Power rear side windows$200$200 
Remote app$25$25 
Remote start$150$150 
Tilt steering wheel, manual  $150
Tilt/telescoping steering wheel, manual$250$250 
Brakes, Airbags, and Other Safety 
Brake assist$50$50 
Obstacle detection, front $150 
Obstacle detection, rear$250$250 
Rear side airbags$300$300 
Rearview camera$200$200 
Rollover sensor$50$50 
Vehicle health reports$0$0 
Cargo Management 
Overhead sunglass holder  $25
Second-row high console  $250
Climate Control 
Automatic climate control, front$200$200 
Dual-zone climate control$125$125 
Rear air vents$100$100 
Drivetrain 
Limited-slip rear differential  $300
Exterior 
Active grille shutters$0$0 
Body kit $0$0
Rear spoiler $200$200
Infotainment 
4G LTE connectivity$0$0 
App support$0$0 
Aux input$50$50 
Bluetooth audio streaming$25$25 
Bluetooth cell phone link$100$100 
CD changer, in-dash  $325
CD player$125$125 
MP3-compatible player$50$50 
Satellite radio$200$200 
Siri Eyes Free support$0$0 
SMS text-to-speech reader$25$25 
Telematics service, such as OnStar, with navigation$225$225 
Voice control for external devices$0$0 
Voice control for nav and audio$100$100 
Wi-Fi hotspot$50$50 
Instruments, Lights, and Mirrors 
Automatic headlights$125$125 
Compass$0$0 
Fog lights$125 $125
Large color reconfigurable instrument cluster display $250 
Performance meter $150 
Trip computer$150$150 
Turn signals on or near mirrors$25$25 
Seats and Interior Trim 
Folding second row seats$300$300 
Power fore-aft adjuster, passenger seat$100$100 
Power height adjuster, passenger seat$100$100 
Power lumbar adjuster, passenger seat$100$100 
Power recliner, passenger seat$100$100 
Power tilt adjuster, passenger seat$100$100 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500 
Electronic systems calibration selector $200 
Sport suspension (upgrade) $0$0
Transmission 
Steering-wheel-mounted transmission controls  $100
Total Value of Features$5,375$6,700$2,575
Value of Feature Adjustments$2,800$4,125$0
Value of Feature Adjustments-2,684-3,9540

Return to top

Specifications Comparison: Buick Regal vs. Mazda RX-8

Model Year20152007
ModelRegalRX-8
Body4dr Sedan4dr Coupe
Wheelbase107.8 in106.4 in
Length190.2 in174.3 in
Width73.1 in69.7 in
Height58.4 in52.8 in
Curb Weight3,692 lb.3,075 lb.
Fuel Capacity18.0 gal.15.9 gal.
Row 1 Headroom38.8 in38.2 in
Row 1 Shoulder Room56.7 in54.8 in
Row 1 Hip Room55.4 in53.3 in
Row 1 Legroom42.1 in42.7 in
Row 2 Headroom36.8 in36.8 in
Row 2 Shoulder Room54.4 in54.9 in
Row 2 Hip Room52.3 in48.1 in
Row 2 Legroom37.3 in32.2 in
Cargo Volume14.2 ft37.6 ft3

Return to top

Option Package Details
Buick Regal

Premium II Package
FeatureValueRequested?
Navigation system600Yes
Rear side airbags300No
Xenon HID headlights500Yes
Bose, 9 speakers (with subwoofer)350No
Voice control for nav and audio75No
Speed limit information0No
Power recliner, passenger seat100No
Power fore-aft adjuster, passenger seat100No
Power lumbar adjuster, passenger seat100No
Universal garage door opener100Yes
Power tilt adjuster, passenger seat100No
Obstacle detection, rear250No
Heated steering wheel100No
AC power outlet100No
Remote start150No
Proximity key250Yes
Total Requested145046%
Total Not Requested172554%

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 key250Yes
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)250Yes
Performance braking system (optional)250No
Limited-slip rear differential300No
225/45ZR18 tires400No
Total Requested435074%
Total Not Requested150026%

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, Hatchbacks, and Wagons.
See TrueDelta's information for all Buick models.