Kia K900 Kia K900 2015 Mazda RX-8 Mazda RX-8 2010

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Kia K900 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 K900 vs. Mazda RX-8 Invoice Comparison

Lowest Total Price: $35,195

Mazda RX-8 Grand Touring   
Difference: $20,205

Lowest Total Invoice: $32,424

Mazda RX-8 Grand Touring   
Difference: $19,057

Calculate Payments

  Down Payment Interest Rate Term
Model Year201520152010
ModelK900K900RX-8
TrimPremiumLuxuryGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Base Price $54,500 $59,900 $31,960
Base Invoice $50,581 $55,592 $29,566
Cargo net     40
Cargo mat     50
Temporary spare tire     395
Navigation system     2,000
Cargo net     32
Cargo mat     36
Temporary spare tire     320
Navigation system     1,720
Options (change) 0 0 2,485
Options (change) 0 0 2,108
Destination 900 900 750
Total Price $55,400 $60,800 $35,195
Total Invoice $51,481 $56,492 $32,424

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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 K900 dealer quotes or Mazda RX-8 dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Kia K900 vs. Mazda RX-8

Lowest Adjusted Price and Invoice: Mazda RX-8 Grand Touring
TrueDelta Adjusted Price Difference: $13,625
TrueDelta Adjusted Invoice Difference: $12,942
Model Year201520152010
ModelK900K900RX-8
TrimPremiumLuxuryGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Engine420hp V8420hp V8232hp R2
TransmissionT8T8M6
DrivetrainRWDRWDRWD
EPA Fuel Economy (city/highway)15/23 MPG15/23 MPG16/22 MPG
Audio (watts, speakers)?, 14900, 17300, 9
Tire (rear if not all the same)245/45-19245/45-19225/45-18
Total Price$55,400$60,800$35,195
Adjustments for Features-6,580-8,7800
Feature-Adjusted Total Price$48,820$52,020$35,195
Cost Above Minimum$0$3,200$0
Total Invoice$51,481$56,492$32,424
Adjustments for Features-6,115-8,1580
Feature-Adjusted Total Invoice$45,366$48,334$32,424
Cost Above Minimum$0$2,968$0

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Features Comparison: Kia K900 vs. Mazda RX-8

Model Year201520152010
ModelK900K900RX-8
TrimPremiumLuxuryGrand Touring
Body4dr Sedan4dr Sedan4dr Coupe
Transmission and Drivetrain 
8-speed manually-shiftable automatic$1300$1300 
6-speed manual  $150
RWD$0$0$0
Accessories 
Heated steering wheel $100 
Power rear side windows$200$200 
Power trunk closer$350$350 
Sunshade, rear, power$225$225 
Sunshades, second row$125$125 
Tilt steering wheel, manual  $150
Tilt/telescoping steering wheel, power$350$350 
Brakes, Airbags, and Other Safety 
911 assist$25$25 
Active or whiplash-reducing head restraints, front seats$0$0 
Blind spot warning system $200 
Brake assist$50$50 
Cross-traffic warning, rear $100 
Lane departure warning $200 
Obstacle detection, front$150$150 
Obstacle detection, rear$250$250 
Rear side airbags$300$300 
Rearview camera$200$200 
Vehicle health reports$0$0 
Wide-view front camera$150$150 
Cargo Management 
Second-row high console  $250
Climate Control 
Automatic air recirculation$100$100 
Dual-zone climate control$125$125 
Ionizing air filtration$50$50 
Rear air vents with automatic controls$250$250 
Water-repellent front-door glass$15$15 
Wiper de-icer$25$25 
Drivetrain 
Limited-slip rear differential  $300
Exterior 
Laminated front side windows$200$200 
Laminated rear side windows$100$100 
Panoramic sunroof$1200$1200 
Rear spoiler  $200
Sunroof  $900
Infotainment 
App support$0$0 
Bluetooth audio streaming$25$25 
CD changer, in-dash  $325
CD player$125$125 
DVD-compatible player$0$0 
HD radio$50$50 
Media drive$15$15 
SMS text-to-speech reader$25$25 
Surround sound $250$250
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 
Analog clock$25$25 
Approach detection$25$25 
Auto-dimming driver-side mirror$75$75 
Auto-dimming passenger-side mirror$75$75 
Compass$0$0 
Interior ambient lighting$150$150 
Mirror tilt-down in reverse$25$25 
Power-folding mirrors$50$50 
Steering-linked headlights$150$150 
Trip computer$150$150 
Turn signals on or near mirrors$25$25 
Seats and Interior Trim 
Aluminum trim$100  
Cooled or ventilated front seats$300$300 
Door sill trim plates  $100
Heated second row seats$200$200 
Illuminated door sill trim plates$200$200 
Leather door panel trim$250$250 
Leather-wrapped steering wheel$150 $150
Metal pedals  $75
Power 4-way lumbar adjuster, driver seat$150$150 
Power fore-aft adjuster, passenger seat$100$100 
Power lumbar adjuster, driver seat  $100
Power recliner, passenger seat$100$100 
Synthetic suede headliner $650 
Upholstered instrument panel, leather$1000$1000 
Wood trim $300 
Wood/leather-wrapped steering wheel $150 
Suspension, Wheels, and Tires 
Adaptive dampers - mechanical$100$100 
Alloy wheels$350 $350
Chrome-plated alloy wheels $850 
Total Value of Features$9,880$12,080$3,300
Value of Feature Adjustments$6,580$8,780$0
Value of Feature Adjustments-6,115-8,1580

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Specifications Comparison: Kia K900 vs. Mazda RX-8

Model Year20152010
ModelK900RX-8
Body4dr Sedan4dr Coupe
Wheelbase119.9 in106.4 in
Length200.6 in175.6 in
Width74.8 in69.7 in
Height58.5 in52.8 in
Curb Weight4,555 lb.3,064 lb.
Fuel Capacity19.8 gal.15.9 gal.
Row 1 Headroom40.2 in38.2 in
Row 1 Shoulder Room59.1 in54.8 in
Row 1 Hip Room55.9 in53.3 in
Row 1 Legroom45.9 in42.7 in
Row 2 Headroom37.6 in36.8 in
Row 2 Shoulder Room57.2 in54.9 in
Row 2 Hip Room55.7 in48.1 in
Row 2 Legroom38.2 in32.2 in
Cargo Volume15.9 ft37.6 ft3

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