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

We are 103,000+ car owners sharing real-world car information.

Join Us

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: $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 Year200720152015
ModelRX-8OptimaOptima
TrimManualSX TurboSX Limited Turbo
Body4dr Coupe4dr Sedan4dr Sedan
Base Price $26,435 $27,700 $35,500
Base Invoice $24,458 $25,920 $33,140
Grand Touring Package 4,635    
Rear spoiler 360    
Navigation system 2,000    
Cargo net 40 50 50
Body kit 970    
Technology Package   2,400  
Premium Package   3,300  
Grand Touring Package 4,277    
Rear spoiler 288    
Navigation system 1,721    
Cargo net 32 42 42
Body kit 775    
Technology Package   2,230  
Premium Package   3,060  
Options (change) 8,005 5,750 50
Options (change) 7,093 5,332 42
Destination 595 825 825
Total Price $35,035 $34,275 $36,375
Total Invoice $32,146 $32,077 $34,007

Return to top

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 Turbo
TrueDelta Adjusted Price Difference: $5,760
TrueDelta Adjusted Invoice Difference: $4,748
Model Year200720152015
ModelRX-8OptimaOptima
TrimManualSX TurboSX Limited Turbo
Body4dr Coupe4dr Sedan4dr Sedan
Engine232hp R2274hp I4274hp I4
TransmissionM6T6T6
DrivetrainRWDFWDFWD
EPA Fuel Economy (city/highway)18/24 MPG20/31 MPG20/31 MPG
Audio (watts, speakers)300, 9?, 8?, 8
Tire (rear if not all the same)225/45-18225/45-18225/45-18
Total Price$35,035$34,275$36,375
Adjustments for Features0-5,000-5,600
Feature-Adjusted Total Price$35,035$29,275$30,775
Cost Above Minimum$0$0$1,500
Total Invoice$32,146$32,077$34,007
Adjustments for Features0-4,679-5,235
Feature-Adjusted Total Invoice$32,146$27,398$28,772
Cost Above Minimum$0$0$1,374

Return to top

Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year200720152015
ModelRX-8OptimaOptima
TrimManualSX TurboSX Limited Turbo
Body4dr Coupe4dr Sedan4dr Sedan
Transmission and Drivetrain 
6-speed manual$150  
6-speed manually-shiftable automatic $1100$1100
RWD$0  
FWD $0$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$2,950$7,950$8,550
Value of Feature Adjustments$0$5,000$5,600
Value of Feature Adjustments0-4,679-5,235

Return to top

Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20072015
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

Return to top

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%

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%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

See TrueDelta's information for all Coupes
See TrueDelta's information for all Mazda models.