Mazda RX-8 Mazda RX-8 2006 Kia Optima Kia Optima 2014

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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: $36,150

Kia Optima SX Limited Turbo   
Difference: $380

Lowest Total Invoice: $33,138

Mazda RX-8 Base (manual)   
Difference: $667

Calculate Payments

  Down Payment Interest Rate Term
Model Year20062014
ModelRX-8Optima
TrimBase (manual)SX Limited Turbo
Body4dr Coupe4dr Sedan
Base Price $26,435 $35,300
Base Invoice $24,458 $32,963
Shinka Package 6,165  
Rear spoiler 360  
Navigation system 2,000  
Cargo net 40 50
Body kit 970  
Shinka Package 5,304  
Rear spoiler 288  
Navigation system 1,721  
Cargo net 32 42
Body kit 775  
Options (change) 9,535 50
Options (change) 8,120 42
Destination 560 800
Total Price $36,530 $36,150
Total Invoice $33,138 $33,805

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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 Limited Turbo
TrueDelta Adjusted Price Difference: $5,765
TrueDelta Adjusted Invoice Difference: $4,369
Model Year20062014
ModelRX-8Optima
TrimBase (manual)SX Limited Turbo
Body4dr Coupe4dr Sedan
Engine238hp R2274hp I4
TransmissionM6T6
DrivetrainRWDFWD
EPA Fuel Economy (city/highway)18/24 MPG20/31 MPG
Audio (watts, speakers)300, 9?, 8
Tire (rear if not all the same)225/45-18225/45-18
Total Price$36,530$36,150
Adjustments for Features0-5,385
Feature-Adjusted Total Price$36,530$30,765
Total Invoice$33,138$33,805
Adjustments for Features0-5,036
Feature-Adjusted Total Invoice$33,138$28,769

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year20062014
ModelRX-8Optima
TrimBase (manual)SX Limited Turbo
Body4dr Coupe4dr Sedan
Transmission and Drivetrain 
6-speed manual$150 
6-speed manually-shiftable automatic $1100
RWD$0 
FWD $0
Accessories 
Heated steering wheel $100
Power rear side windows $200
Tilt steering wheel, manual$150 
Tilt/telescoping steering wheel, manual $250
Brakes, Airbags, and Other Safety 
911 assist $25
Active or whiplash-reducing head restraints, front seats $0
Blind spot warning system $200
Brake assist $50
Cross-traffic warning, rear $100
Obstacle detection, rear $250
Rearview camera $200
Vehicle health reports $0
Cargo Management 
Air-conditioned storage compartment $50
Rear seat pass-through$100 
Second-row high console$250 
Climate Control 
Automatic climate control, front $200
Dual-zone climate control $125
Ionizing air filtration $50
Rear air vents $100
Water-repellent front-door glass$15 
Drivetrain 
Limited-slip rear differential$300 
Exterior 
Laminated front side windows $200
Painted brake calipers (optional) $0
Panoramic sunroof $1200
Sunroof$900 
Infotainment 
App support $0
Aux input $50
Bluetooth audio streaming $25
Bluetooth cell phone link $100
CD changer, in-dash$325 
CD player $125
HD radio $50
MP3-compatible player $50
SMS text-to-speech reader $25
Surround sound $250
Traffic information $25
Voice control for external devices $0
Voice control for nav and audio $100
Instruments, Lights, and Mirrors 
Automatic headlights $125
Compass $0
Power-folding mirrors $50
Speaker lights $100
Trip computer $150
Turn signals on or near mirrors $25
Seats and Interior Trim 
Cooled or ventilated front seats $300
Floor mats$75 
Folding second row seats $300
Heated second row seats $200
Illuminated door sill trim plates $200
Leather-wrapped steering wheel$150 
Memory system, driver seat $200
Power fore-aft adjuster, passenger seat $100
Power recliner, passenger seat $100
Synthetic suede inserts in leather seating surfaces$0 
Wood trim $300
Wood/leather-wrapped steering wheel $150
Suspension, Wheels, and Tires 
Electronic systems calibration selector $200
Transmission 
Steering-wheel-mounted transmission controls $100
Total Value of Features$2,415$7,800
Value of Feature Adjustments$0$5,385
Value of Feature Adjustments0-5,036

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Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20062014
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in110.0 in
Length174.3 in190.7 in
Width69.7 in72.1 in
Height52.8 in57.9 in
Curb Weight3,045 lb.3,468 lb.
Fuel Capacity15.9 gal.18.5 gal.
Row 1 Headroom38.2 in40.0 in
Row 1 Shoulder Room54.8 in57.3 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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Option Package Details
Mazda RX-8 Base (manual)

Shinka Package
FeatureValueRequested?
Leather seating surfaces900Yes
CD changer, in-dash200No
Satellite radio200Yes
Synthetic suede inserts in leather seating surfaces0No
Polished alloy wheels350Yes
Paint, special0No
Water-repellent front-door glass15No
Comfort suspension (upgrade)0No
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
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Bose, 300W, 9 speakers350No
225/45ZR18 tires400No
Total Requested465083%
Total Not Requested96517%

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