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Kia Optima 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.

Kia Optima vs. Mazda RX-8 Invoice Comparison

Lowest Total Price: $32,815

Mazda RX-8 Automatic   
Difference: $740

Calculate Payments

  Down Payment Interest Rate Term
Model Year20202007
ModelOptimaRX-8
TrimSXAutomatic
Body4dr Sedan4dr Coupe
Base Price $32,190 $26,435
Cargo net 50 40
Universal garage door opener 350  
Grand Touring Package   5,335
Rear spoiler   360
Cargo mat   50
Cargo net 42 32
Universal garage door opener 291  
Grand Touring Package   4,922
Rear spoiler   288
Cargo mat   36
Options (change) 400 5,785
Options (change) 333 5,278
Destination 965 595
Total Price $33,555 $32,815

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

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

Lowest Adjusted Price and Invoice: Kia Optima SX
TrueDelta Adjusted Price Difference: $3,760
TrueDelta Adjusted Invoice Difference: $29,207
Model Year20202007
ModelOptimaRX-8
TrimSXAutomatic
Body4dr Sedan4dr Coupe
Engine245hp I4212hp R2
TransmissionT6T6
DrivetrainFWDRWD
EPA Fuel Economy (city/highway)21/30 MPG18/25 MPG
Audio (watts, speakers)?, 6300, 9
Tire (rear if not all the same)235/45-18225/45-18
Total Price$33,555$32,815
Adjustments for Features-4,5000
Feature-Adjusted Total Price$29,055$32,815

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Features Comparison: Kia Optima vs. Mazda RX-8

Model Year20202007
ModelOptimaRX-8
TrimSXAutomatic
Body4dr Sedan4dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100
FWD$0 
RWD $0
Accessories 
Power rear side windows$200 
Proximity trunk or liftgate opener$125 
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 
Knee airbag, driver$75 
Obstacle detection, rear$250 
Rearview camera$200 
Rollover sensor$50 
Vehicle health reports$0 
Cargo Management 
Rear seat pass-through $100
Second-row high console $250
Climate Control 
Automatic climate control, front$200 
Dual-zone climate control$125 
Rear air vents$100 
Drivetrain 
Limited-slip rear differential $300
Exterior 
Black exterior trim (optional)$0 
Laminated front side windows$200 
Painted brake calipers (optional)$0 
Panoramic sunroof$1200 
Sunroof $900
Infotainment 
Android Auto support$100 
App support$0 
Apple CarPlay support$100 
Aux input$50 
Bluetooth audio streaming$25 
Bluetooth cell phone link$100 
CD changer, in-dash $325
Satellite radio$200 
SMS text-to-speech reader$25 
Voice control for external devices$0 
Instruments, Lights, and Mirrors 
Approach detection$25 
Automatic headlights$125 
Compass$0 
LED headlights$1000 
Power-folding mirrors$50 
Steering-linked headlights$150 
Trip computer$150 
Turn signals on or near mirrors$25 
Xenon HID headlights $500
Seats and Interior Trim 
Cooled or ventilated front seats$300 
Folding second row seats$300 
Memory system, driver seat$200 
Power 4-way lumbar adjuster, driver seat$150 
Power fore-aft adjuster, passenger seat$100 
Power height adjuster, passenger seat$100 
Power lumbar adjuster, driver seat $100
Power lumbar adjuster, passenger seat$100 
Power recliner, passenger seat$100 
Power tilt adjuster, passenger seat$100 
Suspension, Wheels, and Tires 
Alloy wheels $350
Electronic systems calibration selector$200 
Machined alloy wheels$350 
Performance steering system (optional)$0 
Total Value of Features$8,575$4,075
Value of Feature Adjustments$4,500$0
Value of Feature Adjustments-1740

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

Specifications Comparison: Kia Optima vs. Mazda RX-8

Model Year20202007
ModelOptimaRX-8
Body4dr Sedan4dr Coupe
Wheelbase110.4 in106.4 in
Length191.1 in174.3 in
Width73.2 in69.7 in
Height57.7 in52.8 in
Curb Weight3,558 lb.3,075 lb.
Fuel Capacity18.5 gal.15.9 gal.
Row 1 Headroom39.8 in38.2 in
Row 1 Shoulder Room58.1 in54.8 in
Row 1 Hip Room56.0 in53.3 in
Row 1 Legroom45.5 in42.7 in
Row 2 Headroom37.8 in36.8 in
Row 2 Shoulder Room56.4 in54.9 in
Row 2 Hip Room56.0 in48.1 in
Row 2 Legroom35.6 in32.2 in
Cargo Volume15.9 ft37.6 ft3

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

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%

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