Kia Optima Kia Optima 2015 Mazda RX-8 Mazda RX-8 2007

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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: $34,275

Kia Optima SX Turbo   
Difference: $760

Lowest Total Invoice: $32,077

Kia Optima SX Turbo   
Difference: $69

Calculate Payments

  Down Payment Interest Rate Term
Model Year201520152007
ModelOptimaOptimaRX-8
TrimSX TurboSX Limited TurboManual
Body4dr Sedan4dr Sedan4dr Coupe
Base Price $27,700 $35,500 $26,435
Base Invoice $25,920 $33,140 $24,458
Technology Package 2,400    
Premium Package 3,300    
Cargo net 50 50 40
Grand Touring Package     4,635
Navigation system     2,000
Body kit     970
Rear spoiler     360
Technology Package 2,230    
Premium Package 3,060    
Cargo net 42 42 32
Grand Touring Package     4,277
Navigation system     1,721
Body kit     775
Rear spoiler     288
Options (change) 5,750 50 8,005
Options (change) 5,332 42 7,093
Destination 825 825 595
Total Price $34,275 $36,375 $35,035
Total Invoice $32,077 $34,007 $32,146

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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 Turbo
TrueDelta Adjusted Price Difference: $5,760
TrueDelta Adjusted Invoice Difference: $4,748
Model Year201520152007
ModelOptimaOptimaRX-8
TrimSX TurboSX Limited TurboManual
Body4dr Sedan4dr Sedan4dr Coupe
Engine274hp I4274hp I4232hp R2
TransmissionT6T6M6
DrivetrainFWDFWDRWD
EPA Fuel Economy (city/highway)20/31 MPG20/31 MPG18/24 MPG
Audio (watts, speakers)?, 8?, 8300, 9
Tire (rear if not all the same)225/45-18225/45-18225/45-18
Total Price$34,275$36,375$35,035
Adjustments for Features-5,000-5,6000
Feature-Adjusted Total Price$29,275$30,775$35,035
Cost Above Minimum$0$1,500$0
Total Invoice$32,077$34,007$32,146
Adjustments for Features-4,679-5,2350
Feature-Adjusted Total Invoice$27,398$28,772$32,146
Cost Above Minimum$0$1,374$0

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Features Comparison: Kia Optima vs. Mazda RX-8

Model Year201520152007
ModelOptimaOptimaRX-8
TrimSX TurboSX Limited TurboManual
Body4dr Sedan4dr Sedan4dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100 
6-speed manual  $150
FWD$0$0 
RWD  $0
Accessories 
Heated steering wheel $100 
Power rear side windows$200$200 
Tilt steering wheel, manual  $150
Tilt/telescoping steering wheel, manual$250$250 
Brakes, Airbags, and Other Safety 
911 assist$25$25 
Active or whiplash-reducing head restraints, front seats$0$0 
Blind spot warning system$200$200 
Brake assist$50$50 
Cross-traffic warning, rear$100$100 
Obstacle detection, rear$250$250 
Rearview camera$200$200 
Vehicle health reports$0$0 
Cargo Management 
Air-conditioned storage compartment$50$50 
Rear seat pass-through  $100
Second-row high console  $250
Climate Control 
Automatic climate control, front$200$200 
Dual-zone climate control$125$125 
Ionizing air filtration$50$50 
Rear air vents$100$100 
Drivetrain 
Limited-slip rear differential  $300
Exterior 
Laminated front side windows$200$200 
Painted brake calipers (optional) $0 
Panoramic sunroof$1200$1200 
Rear spoiler $200$200
Sunroof  $900
Infotainment 
App support$0$0 
Aux input$50$50 
Bluetooth audio streaming$25$25 
Bluetooth cell phone link$100$100 
CD changer, in-dash  $325
CD player$125$125 
HD radio$50$50 
MP3-compatible player$50$50 
Satellite radio$200$200 
SMS text-to-speech reader$25$25 
Surround sound$250$250 
Traffic information$25$25 
Voice control for external devices$0$0 
Voice control for nav and audio$100$100 
Instruments, Lights, and Mirrors 
Automatic headlights$125$125 
Compass$0$0 
Power-folding mirrors$50$50 
Speaker lights$100$100 
Trip computer$150$150 
Turn signals on or near mirrors$25$25 
Seats and Interior Trim 
Cooled or ventilated front seats$300$300 
Floor mats  $75
Folding second row seats$300$300 
Heated second row seats$200$200 
Illuminated door sill trim plates$200$200 
Leather-wrapped steering wheel$150 $150
Memory system, driver seat$200$200 
Power fore-aft adjuster, passenger seat$100$100 
Power recliner, passenger seat$100$100 
Wood trim $300 
Wood/leather-wrapped steering wheel $150 
Suspension, Wheels, and Tires 
Alloy wheels$350 $350
Electronic systems calibration selector$200$200 
Polished alloy wheels $350 
Transmission 
Steering-wheel-mounted transmission controls$100$100 
Total Value of Features$7,950$8,550$2,950
Value of Feature Adjustments$5,000$5,600$0
Value of Feature Adjustments-4,679-5,2350

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Specifications Comparison: Kia Optima vs. Mazda RX-8

Model Year20152007
ModelOptimaRX-8
Body4dr Sedan4dr Coupe
Wheelbase110.0 in106.4 in
Length190.7 in174.3 in
Width72.1 in69.7 in
Height57.9 in52.8 in
Curb Weight3,468 lb.3,045 lb.
Fuel Capacity18.5 gal.15.9 gal.
Row 1 Headroom40.0 in38.2 in
Row 1 Shoulder Room57.3 in54.8 in
Row 1 Hip Room54.7 in53.3 in
Row 1 Legroom45.5 in42.7 in
Row 2 Headroom37.6 in36.8 in
Row 2 Shoulder Room55.7 in54.9 in
Row 2 Hip Room54.5 in48.1 in
Row 2 Legroom34.7 in32.2 in
Cargo Volume15.4 ft37.6 ft3

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Option Package Details
Kia Optima SX Turbo

Technology Package
FeatureValueRequested?
Navigation system600Yes
Obstacle detection, rear250No
Voice control for nav and audio100No
Traffic information25No
Blind spot warning system200No
Rear cross-traffic detection100No
Total Requested60047%
Total Not Requested67553%
Premium Package
FeatureValueRequested?
Panoramic sunroof1200No
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 seat200No
Rearview camera200No
Surround sound250No
Power-folding mirrors50No
HD radio50No
Infinity, 8 speakers (with subwoofer)350No
Voice control for external devices0No
SMS text-to-speech reader25No
Vehicle health reports0No
911 assist25No
Bluetooth audio streaming25No
App support0No
Total Requested2006%
Total Not Requested307594%

Option Package Details
Mazda RX-8 Manual

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
225/45ZR18 tires400No
Total Requested410081%
Total Not Requested95019%

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