Mazda RX-8 Mazda RX-8 2010 Kia Optima Kia Optima 2008

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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: $22,720

Kia Optima EX   
Difference: $10,385

Lowest Total Invoice: $21,085

Kia Optima EX   
Difference: $9,551

Calculate Payments

  Down Payment Interest Rate Term
Model Year20102008
ModelRX-8Optima
TrimGrand TouringEX
Body4dr Coupe4dr Sedan
Base Price $31,960 $19,895
Base Invoice $29,566 $18,510
Temporary spare tire 395  
Stability control   650
Premium Package   1,300
Rear spoiler   200
Temporary spare tire 320  
Stability control   580
Premium Package   1,160
Rear spoiler   160
Options (change) 395 2,150
Options (change) 320 1,900
Destination 750 675
Total Price $33,105 $22,720
Total Invoice $30,636 $21,085

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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: $9,535
TrueDelta Adjusted Invoice Difference: $8,764
Model Year20102008
ModelRX-8Optima
TrimGrand TouringEX
Body4dr Coupe4dr Sedan
Engine232hp R2162hp I4
TransmissionM6T5
DrivetrainRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG
Audio (watts, speakers)300, 9360, 7
Tire (rear if not all the same)225/45-18205/60-16
Total Price$33,105$22,720
Adjustments for Features-8500
Feature-Adjusted Total Price$32,255$22,720
Total Invoice$30,636$21,085
Adjustments for Features-7870
Feature-Adjusted Total Invoice$29,849$21,085

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102008
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
Proximity key$250 
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 
Infotainment 
Bluetooth cell phone link$100 
Satellite radio$200 
Surround sound$250 
Instruments, Lights, and Mirrors 
Trip computer $150
Turn signals on or near mirrors $25
Xenon HID headlights$500 
Seats and Interior Trim 
Folding second row seats $300
Heated front seats$200 
Manual lumbar adjuster, driver seat $50
Memory system, driver seat$200 
Metal pedals$75 
Power lumbar adjuster, driver seat$100 
Total Value of Features$3,025$2,175
Value of Feature Adjustments$850$0
Value of Feature Adjustments-7870

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Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102008
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in107.1 in
Length175.6 in186.4 in
Width69.7 in71.1 in
Height52.8 in58.3 in
Curb Weight3,065 lb.3,143 lb.
Fuel Capacity15.9 gal.17.0 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 ft314.8 ft3

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Option Package Details
Kia Optima EX

Stability control
FeatureValueRequested?
Stability control400Yes
Antilock brakes (ABS)400Yes
Traction control100Yes
Brake assist50No
Total Requested90095%
Total Not Requested505%
Premium Package
FeatureValueRequested?
Sunroof900Yes
CD changer, in-dash200Yes
MP3-compatible player50Yes
Infinity, 360W, 7 speakers (with subwoofer)350No
Total Requested115077%
Total Not Requested35023%

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