Mazda RX-8 Mazda RX-8 2010 Kia Optima Kia Optima 2012
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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: $31,600

Kia Optima SX   
Difference: $3,110

Lowest Total Invoice: $29,395

Kia Optima SX   
Difference: $2,641

Calculate Payments

  Down Payment Interest Rate Term
Model Year20102012
ModelRX-8Optima
TrimGrand TouringSX
Body4dr Coupe4dr Sedan
Base Price $31,960 $26,500
Base Invoice $29,566 $24,760
Navigation system 2,000 1,400
Premium Package   2,950
Navigation system 1,720 1,250
Premium Package   2,635
Options (change) 2,000 4,350
Options (change) 1,720 3,885
Destination 750 750
Total Price $34,710 $31,600
Total Invoice $32,036 $29,395

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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 Mazda RX-8 dealer quotes or Kia Optima 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: Mazda RX-8 vs. Kia Optima

Lowest Adjusted Price and Invoice: Kia Optima SX
TrueDelta Adjusted Price Difference: $5,535
TrueDelta Adjusted Invoice Difference: $4,897
Model Year20102012
ModelRX-8Optima
TrimGrand TouringSX
Body4dr Coupe4dr Sedan
Engine232hp R2274hp I4
TransmissionM6T6
DrivetrainRWDFWD
EPA Fuel Economy (city/highway)16/22 MPG22/34 MPG
Audio (watts, speakers)300, 9550, 12
Tire (rear if not all the same)225/45-18225/45-18
Total Price$34,710$31,600
Adjustments for Features0-2,425
Feature-Adjusted Total Price$34,710$29,175
Total Invoice$32,036$29,395
Adjustments for Features0-2,256
Feature-Adjusted Total Invoice$32,036$27,139

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102012
ModelRX-8Optima
TrimGrand TouringSX
Body4dr Coupe4dr Sedan
Transmission and Drivetrain 
6-speed manual$150 
6-speed manually-shiftable automatic $1100
RWD$0 
FWD $0
Accessories 
Power rear side windows $200
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
Rearview camera $200
Cargo Management 
Air-conditioned storage compartment $50
Rear seat pass-through$100 
Second-row high console$250 
Climate Control 
Dual-zone climate control $125
Rain-sensing wipers$175 
Rear air vents $100
Variable intermittent wipers $75
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Body kit $0
Panoramic sunroof $1200
Sunroof$900 
Infotainment 
Bluetooth audio streaming $25
CD changer, in-dash$325 
CD player $125
HD radio $50
Surround sound$250 
Traffic information $25
USB port $25
Voice control for nav and audio $100
Instruments, Lights, and Mirrors 
Compass $0
Interior ambient lighting $150
Power-folding mirrors $50
Speaker lights $100
Trip computer $150
Turn signals on or near mirrors $25
Seats and Interior Trim 
Aluminum trim $100
Cooled or ventilated front seats $300
Door sill trim plates$100 
Folding second row seats $300
Heated second row seats $200
Illuminated door sill trim plates $200
Leather seating surfaces$900 
Partial leather seating sufaces $450
Power fore-aft adjuster, passenger seat $100
Power recliner, passenger seat $100
Suspension, Wheels, and Tires 
Sport suspension (upgrade) $0
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$3,600$6,025
Value of Feature Adjustments$0$2,425
Value of Feature Adjustments0-2,256

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See a complete comparison of Mazda RX-8 vs. Kia Optima features.

Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102012
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in110.0 in
Length175.6 in190.7 in
Width69.7 in72.1 in
Height52.8 in57.3 in
Curb Weight3,064 lb.3,385 lb.
Fuel Capacity15.9 gal.18.5 gal.
Row 1 Headroom38.2 in40.0 in
Row 1 Shoulder Room54.8 in57.2 in
Row 1 Hip Room53.3 in54.7 in
Row 1 Legroom42.7 in45.5 in
Row 2 Headroom36.8 in37.6 in
Row 2 Shoulder Room54.9 in55.7 in
Row 2 Hip Room48.1 in54.5 in
Row 2 Legroom32.2 in34.7 in
Cargo Volume7.6 ft315.4 ft3

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See a complete comparison of Mazda RX-8 vs. Kia Optima specs.

Option Package Details
Kia Optima SX

Navigation system
FeatureValueRequested?
Navigation system600Yes
Voice control for nav and audio100No
Traffic information25No
Total Requested60083%
Total Not Requested12517%
Premium Package
FeatureValueRequested?
Heated front seats200Yes
Heated second row seats200No
Cooled or ventilated front seats300No
Power recliner, passenger seat100No
Power fore-aft adjuster, passenger seat100No
Memory system, driver seat200Yes
Panoramic sunroof1200No
Power-folding mirrors50No
HD radio50No
Infinity, 550W, 12 speakers (with subwoofer)350No
Voice control for external devices0No
SMS text-to-speech reader25No
Bluetooth audio streaming25No
Media drive, small5No
Rearview camera200No
Total Requested40013%
Total Not Requested260587%

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