Mazda RX-8 Mazda RX-8 2010 Kia Optima Kia Optima 2015

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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: $34,275

Kia Optima SX Turbo   
Difference: $475

Lowest Total Invoice: $32,068

Mazda RX-8 Grand Touring   
Difference: $9

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  Down Payment Interest Rate Term
Model Year201020152015
ModelRX-8OptimaOptima
TrimGrand TouringSX TurboSX Limited Turbo
Body4dr Coupe4dr Sedan4dr Sedan
Base Price $31,960 $27,700 $35,500
Base Invoice $29,566 $25,920 $33,140
Cargo net 40 50 50
Navigation system 2,000    
Technology Package   2,400  
Premium Package   3,300  
Cargo net 32 42 42
Navigation system 1,720    
Technology Package   2,230  
Premium Package   3,060  
Options (change) 2,040 5,750 50
Options (change) 1,752 5,332 42
Destination 750 825 825
Total Price $34,750 $34,275 $36,375
Total Invoice $32,068 $32,077 $34,007

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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 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: $4,275
TrueDelta Adjusted Invoice Difference: $3,547
Model Year201020152015
ModelRX-8OptimaOptima
TrimGrand TouringSX TurboSX Limited Turbo
Body4dr Coupe4dr Sedan4dr Sedan
Engine232hp R2274hp I4274hp I4
TransmissionM6T6T6
DrivetrainRWDFWDFWD
EPA Fuel Economy (city/highway)16/22 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$34,750$34,275$36,375
Adjustments for Features0-3,800-5,150
Feature-Adjusted Total Price$34,750$30,475$31,225
Cost Above Minimum$0$0$750
Total Invoice$32,068$32,077$34,007
Adjustments for Features0-3,556-4,815
Feature-Adjusted Total Invoice$32,068$28,521$29,192
Cost Above Minimum$0$0$671

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year201020152015
ModelRX-8OptimaOptima
TrimGrand TouringSX 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 
Dual-zone climate control $125$125
Ionizing air filtration $50$50
Rain-sensing wipers$175  
Rear air vents $100$100
Variable intermittent wipers $75$75
Drivetrain 
Limited-slip rear differential$300  
Exterior 
Body kit $0$0
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
Bluetooth audio streaming $25$25
CD changer, in-dash$325  
CD player $125$125
HD radio $50$50
SMS text-to-speech reader $25$25
Traffic information $25$25
USB port $25$25
Voice control for external devices $0$0
Voice control for nav and audio $100$100
Instruments, Lights, and Mirrors 
Compass $0$0
Interior ambient lighting $150$150
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
Door sill trim plates$100  
Floor mats$75  
Folding second row seats $300$300
Heated second row seats $200$200
Illuminated door sill trim plates $200$200
Leather door panel trim  $250
Leather-wrapped steering wheel$150$150 
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 
Chrome-plated alloy wheels  $850
Electronic systems calibration selector $200$200
Sport suspension (upgrade) $0$0
Transmission 
Steering-wheel-mounted transmission controls $100$100
Total Value of Features$3,225$7,025$8,375
Value of Feature Adjustments$0$3,800$5,150
Value of Feature Adjustments0-3,556-4,815

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Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20102015
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in110.0 in
Length175.6 in190.7 in
Width69.7 in72.1 in
Height52.8 in57.9 in
Curb Weight3,064 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
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
Power-folding mirrors50No
HD radio50No
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
Rearview camera200No
Surround sound250Yes
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 Requested65020%
Total Not Requested262580%

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