Kia K900 Kia K900 2015 Mazda RX-8 Mazda RX-8 2006

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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: $35,250

Mazda RX-8 Base (manual)   
Difference: $20,150

Lowest Total Invoice: $32,111

Mazda RX-8 Base (manual)   
Difference: $19,370

Calculate Payments

  Down Payment Interest Rate Term
Model Year201520152006
ModelK900K900RX-8
TrimPremiumLuxuryBase (manual)
Body4dr Sedan4dr Sedan4dr Coupe
Base Price $54,500 $59,900 $26,435
Base Invoice $50,581 $55,592 $24,458
Shinka Package     6,165
Navigation system     2,000
Cargo mat     50
Cargo net     40
Shinka Package     5,304
Navigation system     1,721
Cargo mat     36
Cargo net     32
Options (change) 0 0 8,255
Options (change) 0 0 7,093
Destination 900 900 560
Total Price $55,400 $60,800 $35,250
Total Invoice $51,481 $56,492 $32,111

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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 Base (manual)
TrueDelta Adjusted Price Difference: $12,760
TrueDelta Adjusted Invoice Difference: $12,503
Model Year201520152006
ModelK900K900RX-8
TrimPremiumLuxuryBase (manual)
Body4dr Sedan4dr Sedan4dr Coupe
Engine420hp V8420hp V8238hp R2
TransmissionT8T8M6
DrivetrainRWDRWDRWD
EPA Fuel Economy (city/highway)15/23 MPG15/23 MPG18/24 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$35,250
Adjustments for Features-7,390-8,4400
Feature-Adjusted Total Price$48,010$52,360$35,250
Cost Above Minimum$0$4,350$0
Total Invoice$51,481$56,492$32,111
Adjustments for Features-6,867-7,8420
Feature-Adjusted Total Invoice$44,614$48,650$32,111
Cost Above Minimum$0$4,036$0

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Features Comparison: Kia K900 vs. Mazda RX-8

Model Year201520152006
ModelK900K900RX-8
TrimPremiumLuxuryBase (manual)
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 climate control, front$200$200 
Dual-zone climate control$125$125 
Ionizing air filtration$50$50 
Rain-sensing wipers$175$175 
Rear air vents with automatic controls$250$250 
Variable intermittent wipers  $75
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 
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 
DVD-compatible player$0$0 
HD radio$50$50 
Media drive$15$15 
MP3-compatible player$50$50 
SMS text-to-speech reader$25$25 
Surround sound $250 
Traffic information$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 
Automatic headlights$125$125 
Compass$0$0 
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 
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 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 inserts in leather seating surfaces  $0
Upholstered instrument panel, leather$1000$1000 
Wood trim $300 
Wood/leather-wrapped steering wheel $150 
Suspension, Wheels, and Tires 
Alloy wheels$350  
Polished alloy wheels $350$350
Sport suspension (upgrade)  $0
Total Value of Features$10,140$11,190$2,750
Value of Feature Adjustments$7,390$8,440$0
Value of Feature Adjustments-6,867-7,8420

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Specifications Comparison: Kia K900 vs. Mazda RX-8

Model Year20152006
ModelK900RX-8
Body4dr Sedan4dr Coupe
Wheelbase119.9 in106.4 in
Length200.6 in174.3 in
Width74.8 in69.7 in
Height58.5 in52.8 in
Curb Weight4,555 lb.3,045 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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Option Package Details
Mazda RX-8 Base (manual)

Shinka Package
FeatureValueRequested?
Leather seating surfaces900Yes
CD changer, in-dash200No
Satellite radio200Yes
Synthetic suede inserts in leather seating surfaces0No
Polished alloy wheels350Yes
Paint, special0No
Water-repellent front-door glass15Yes
Comfort suspension (upgrade)0No
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
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Bose, 300W, 9 speakers350No
225/45ZR18 tires400No
Total Requested466583%
Total Not Requested95017%

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