Mazda RX-8 Mazda RX-8 2010 Kia Optima Kia Optima 2009

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Mazda RX-8 vs. Kia Optima 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.

Mazda RX-8 vs. Kia Optima Invoice Comparison

Lowest Total Price: $24,835

Kia Optima EX   
Difference: $10,270

Lowest Total Invoice: $23,030

Kia Optima EX   
Difference: $9,326

Calculate Payments

  Down Payment Interest Rate Term
Model Year20102009
ModelRX-8Optima
TrimGrand TouringEX
Body4dr Coupe4dr Sedan
Base Price $31,960 $20,690
Base Invoice $29,566 $19,255
Temporary spare tire 395  
Navigation system 2,000 1,200
Premium Package   1,300
Convenience Package   970
Temporary spare tire 320  
Navigation system 1,720 1,075
Premium Package   1,160
Convenience Package   865
Options (change) 2,395 3,470
Options (change) 2,040 3,100
Destination 750 675
Total Price $35,105 $24,835
Total Invoice $32,356 $23,030

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

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TrueDelta Value Comparison: Mazda RX-8 vs. Kia Optima

Lowest Adjusted Price and Invoice: Kia Optima EX
TrueDelta Adjusted Price Difference: $9,895
TrueDelta Adjusted Invoice Difference: $8,980
Model Year20102009
ModelRX-8Optima
TrimGrand TouringEX
Body4dr Coupe4dr Sedan
Engine232hp R2175hp I4
TransmissionM6T5
DrivetrainRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)300, 9360, 7
Tire (rear if not all the same)225/45-18215/50-17
Total Price$35,105$24,835
Adjustments for Features-3750
Feature-Adjusted Total Price$34,730$24,835
Total Invoice$32,356$23,030
Adjustments for Features-3460
Feature-Adjusted Total Invoice$32,010$23,030

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102009
ModelRX-8Optima
TrimGrand TouringEX
Body4dr Coupe4dr Sedan
Transmission and Drivetrain 
6-speed manual$150 
5-speed manually-shiftable automatic $1000
RWD$0 
FWD $0
Accessories 
Power rear side windows $200
Power-adjustable pedals $125
Proximity key$250 
Sunshade, rear $125
Tilt steering wheel, manual$150 
Tilt/telescoping steering wheel, manual $250
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats $0
Brake assist $50
Cargo Management 
Rear seat pass-through$100 
Second-row high console$250 
Climate Control 
Rain-sensing wipers$175 
Variable intermittent wipers $75
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Bodyside moldings $75
Bright-finished exhaust tip(s)$25 
Rear spoiler$200 
Infotainment 
Bluetooth cell phone link$100 
CD changer, in-dash$325 
CD player $125
Surround sound$250 
USB port $25
Instruments, Lights, and Mirrors 
Compass $0
Trip computer $150
Turn signals on or near mirrors $25
Xenon HID headlights$500 
Seats and Interior Trim 
Folding second row seats $300
Manual lumbar adjuster, driver seat $50
Memory system, driver seat$200 
Metal pedals$75 
Power fore-aft adjuster, passenger seat $100
Power lumbar adjuster, driver seat$100 
Power recliner, passenger seat $100
Total Value of Features$3,150$2,775
Value of Feature Adjustments$375$0
Value of Feature Adjustments-3460

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Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102009
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in107.1 in
Length175.6 in189.0 in
Width69.7 in71.1 in
Height52.8 in58.3 in
Curb Weight3,065 lb.3,158 lb.
Fuel Capacity15.9 gal.16.4 gal.
Row 1 Headroom38.2 in39.8 in
Row 1 Shoulder Room54.8 in57.1 in
Row 1 Hip Room53.3 in54.5 in
Row 1 Legroom42.7 in43.7 in
Row 2 Headroom36.8 in38.0 in
Row 2 Shoulder Room54.9 in56.3 in
Row 2 Hip Room48.1 in54.7 in
Row 2 Legroom32.2 in37.8 in
Cargo Volume7.6 ft315.0 ft3

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Option Package Details
Kia Optima EX

Premium Package
FeatureValueRequested?
Sunroof900Yes
CD changer, in-dash200No
Infinity, 360W, 7 speakers (with subwoofer)350No
Total Requested90062%
Total Not Requested55038%
Convenience Package
FeatureValueRequested?
215/50VR17 tires400No
Heated front seats200Yes
Power recliner, passenger seat100No
Power fore-aft adjuster, passenger seat100No
Sunshade, rear125No
Power-adjustable pedals125No
Total Requested20019%
Total Not Requested85081%

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