Mazda RX-8 Mazda RX-8 2007 Kia Optima Kia Optima 2010

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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: $25,090

Kia Optima EX   
Difference: $8,575

Lowest Total Invoice: $23,350

Kia Optima EX   
Difference: $7,701

Calculate Payments

  Down Payment Interest Rate Term
Model Year200720072010
ModelRX-8RX-8Optima
TrimAutomaticManualEX
Body4dr Coupe4dr Coupe4dr Sedan
Base Price $26,435 $26,435 $20,995
Base Invoice $24,458 $24,458 $19,620
Grand Touring Package 5,335 4,635  
Navigation system 2,000 2,000 1,200
Premium Package     2,200
Grand Touring Package 4,922 4,277  
Navigation system 1,721 1,721 1,075
Premium Package     1,960
Options (change) 7,335 6,635 3,400
Options (change) 6,643 5,998 3,035
Destination 595 595 695
Total Price $34,365 $33,665 $25,090
Total Invoice $31,696 $31,051 $23,350

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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

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.

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

Lowest Adjusted Price and Invoice: Kia Optima EX
TrueDelta Adjusted Price Difference: $9,375
TrueDelta Adjusted Invoice Difference: $8,448
Model Year200720072010
ModelRX-8RX-8Optima
TrimAutomaticManualEX
Body4dr Coupe4dr Coupe4dr Sedan
Engine212hp R2232hp R2175hp I4
TransmissionT6M6T5
DrivetrainRWDRWDFWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG
Audio (watts, speakers)300, 9300, 9360, 7
Tire (rear if not all the same)225/45-18225/45-18215/50-17
Total Price$34,365$33,665$25,090
Adjustments for Features-1,0500-1,150
Feature-Adjusted Total Price$33,315$33,665$23,940
Cost Above Minimum$0$350$0
Total Invoice$31,696$31,051$23,350
Adjustments for Features-9680-1,070
Feature-Adjusted Total Invoice$30,728$31,051$22,280
Cost Above Minimum$0$323$0

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Features Comparison: Mazda RX-8 vs. Kia Optima

Model Year200720072010
ModelRX-8RX-8Optima
TrimAutomaticManualEX
Body4dr Coupe4dr Coupe4dr Sedan
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100  
6-speed manual $150 
5-speed manually-shiftable automatic  $1000
RWD$0$0 
FWD  $0
Accessories 
Power rear side windows  $200
Power-adjustable pedals  $125
Proximity key$250$250 
Sunshade, rear  $125
Tilt steering wheel, manual$150$150 
Tilt/telescoping steering wheel, manual  $250
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats  $0
Brake assist  $50
Cargo Management 
Rear seat pass-through$100$100 
Second-row high console$250$250 
Climate Control 
Automatic climate control, front  $200
Drivetrain 
Limited-slip rear differential$300$300 
Exterior 
Bodyside moldings  $75
Bright-finished exhaust tip(s)$25$25 
Infotainment 
Aux input  $50
CD changer, in-dash$325$325 
CD player  $125
MP3-compatible player  $50
Satellite radio  $200
Instruments, Lights, and Mirrors 
Automatic headlights  $125
Compass  $0
Trip computer  $150
Turn signals on or near mirrors  $25
Xenon HID headlights$500$500 
Seats and Interior Trim 
Folding second row seats  $300
Manual lumbar adjuster, driver seat  $50
Power fore-aft adjuster, passenger seat  $100
Power lumbar adjuster, driver seat$100$100 
Power recliner, passenger seat  $100
Suspension, Wheels, and Tires 
Sport suspension (upgrade)$0$0 
Transmission 
Steering-wheel-mounted transmission controls$100  
Total Value of Features$3,200$2,150$3,300
Value of Feature Adjustments$1,050$0$1,150
Value of Feature Adjustments-9680-1,070

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Specifications Comparison: Mazda RX-8 vs. Kia Optima

Model Year20072010
ModelRX-8Optima
Body4dr Coupe4dr Sedan
Wheelbase106.4 in107.1 in
Length174.3 in189.0 in
Width69.7 in71.1 in
Height52.8 in58.3 in
Curb Weight3,046 lb.3,158 lb.
Fuel Capacity15.9 gal.16.4 gal.
Row 1 Headroom38.2 in39.8 in
Row 1 Shoulder Room54.8 in57.1 in
Row 1 Hip Room53.3 in54.5 in
Row 1 Legroom42.7 in43.7 in
Row 2 Headroom36.8 in38.0 in
Row 2 Shoulder Room54.9 in56.3 in
Row 2 Hip Room48.1 in54.7 in
Row 2 Legroom32.2 in37.8 in
Cargo Volume7.6 ft315.0 ft3

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Option Package Details
Mazda RX-8 Automatic

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 seat100No
Proximity key250No
Traction control100Yes
Stability control400Yes
Fog lights125Yes
Xenon HID headlights500No
Sunroof900Yes
CD changer, in-dash200No
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Bose, 300W, 9 speakers350No
Sport suspension (upgrade)250No
Performance braking system (optional)250No
Limited-slip rear differential300No
225/45ZR18 tires400No
Total Requested325056%
Total Not Requested260044%

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 seat100No
Proximity key250No
Traction control100Yes
Stability control400Yes
Fog lights125Yes
Xenon HID headlights500No
Sunroof900Yes
CD changer, in-dash200No
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Bose, 300W, 9 speakers350No
225/45ZR18 tires400No
Total Requested325064%
Total Not Requested180036%

Option Package Details
Kia Optima EX

Premium Package
FeatureValueRequested?
215/50VR17 tires400No
Power-adjustable pedals125No
Heated front seats200Yes
Sunroof900Yes
CD changer, in-dash200No
Power recliner, passenger seat100No
Power fore-aft adjuster, passenger seat100No
Sunshade, rear125No
Infinity, 360W, 7 speakers (with subwoofer)350No
Total Requested110044%
Total Not Requested140056%

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