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Kia Optima 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 Optima vs. Mazda RX-8 Invoice Comparison

Lowest Total Price: $31,795

Kia Optima SX   
Difference: $2,445

Lowest Total Invoice: $29,608

Kia Optima SX   
Difference: $2,098

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  Down Payment Interest Rate Term
Model Year20182011
ModelOptimaRX-8
TrimSXGrand Touring
Body4dr Sedan4dr Coupe
Base Price $30,500 $32,260
Base Invoice $28,380 $29,878
Cargo net 50 40
Universal garage door opener 350  
6-speed shiftable automatic   700
Cargo mat   50
Temporary spare tire   395
Cargo net 42 32
Universal garage door opener 291  
6-speed shiftable automatic   645
Cargo mat   36
Temporary spare tire   320
Options (change) 400 1,185
Options (change) 333 1,033
Destination 895 795
Total Price $31,795 $34,240
Total Invoice $29,608 $31,706

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

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

Lowest Adjusted Price and Invoice: Kia Optima SX
TrueDelta Adjusted Price Difference: $6,020
TrueDelta Adjusted Invoice Difference: $5,427
Model Year20182011
ModelOptimaRX-8
TrimSXGrand Touring
Body4dr Sedan4dr Coupe
Engine245hp I4212hp R2
TransmissionT6T6
DrivetrainFWDRWD
EPA Fuel Economy (city/highway)22/31 MPG16/23 MPG
Audio (watts, speakers)?, 6300, 9
Tire (rear if not all the same)235/45-18225/45-18
Total Price$31,795$34,240
Adjustments for Features-3,5750
Feature-Adjusted Total Price$28,220$34,240
Total Invoice$29,608$31,706
Adjustments for Features-3,3290
Feature-Adjusted Total Invoice$26,279$31,706

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Features Comparison: Kia Optima vs. Mazda RX-8

Model Year20182011
ModelOptimaRX-8
TrimSXGrand Touring
Body4dr Sedan4dr Coupe
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100$1100
FWD$0 
RWD $0
Accessories 
Power rear side windows$200 
Proximity trunk or liftgate opener$125 
Tilt steering wheel, manual $150
Tilt/telescoping steering wheel, manual$250 
Brakes, Airbags, and Other Safety 
911 assist$25 
Active or whiplash-reducing head restraints, front seats$0 
Blind spot warning system$200 
Brake assist$50 
Cross-traffic warning, rear$100 
Knee airbag, driver$75 
Obstacle detection, rear$250 
Rearview camera$200 
Rollover sensor$50 
Vehicle health reports$0 
Cargo Management 
Rear seat pass-through $100
Second-row high console $250
Climate Control 
Dual-zone climate control$125 
Rain-sensing wipers $175
Rear air vents$100 
Variable intermittent wipers$75 
Drivetrain 
Limited-slip rear differential $300
Exterior 
Black exterior trim (optional)$0 
Laminated front side windows$200 
Painted brake calipers (optional)$0 
Panoramic sunroof$1200 
Rear spoiler$200 
Sunroof $900
Infotainment 
Android Auto support$100 
App support$0 
Apple CarPlay support$100 
Bluetooth audio streaming$25 
CD changer, in-dash $325
MP3-compatible player $50
SMS text-to-speech reader$25 
Surround sound $250
USB port$25 
Voice control for external devices$0 
Instruments, Lights, and Mirrors 
Approach detection$25 
Compass$0 
Interior ambient lighting$150 
LED headlights$1000 
Power-folding mirrors$50 
Steering-linked headlights$150 
Trip computer$150 
Turn signals on or near mirrors$25 
Xenon HID headlights $500
Seats and Interior Trim 
Cooled or ventilated front seats$300 
Door sill trim plates $100
Folding second row seats$300 
Metal pedals$75 
Power 4-way lumbar adjuster, driver seat$150 
Power fore-aft adjuster, passenger seat$100 
Power height adjuster, passenger seat$100 
Power lumbar adjuster, driver seat $100
Power lumbar adjuster, passenger seat$100 
Power recliner, passenger seat$100 
Power tilt adjuster, passenger seat$100 
Suspension, Wheels, and Tires 
Alloy wheels $350
Electronic systems calibration selector$200 
Machined alloy wheels$350 
Performance steering system (optional)$0 
Sport suspension (upgrade)$0 
Total Value of Features$8,225$4,650
Value of Feature Adjustments$3,575$0
Value of Feature Adjustments-3,3290

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See a complete comparison of Kia Optima vs. Mazda RX-8 features.

Specifications Comparison: Kia Optima vs. Mazda RX-8

Model Year20182011
ModelOptimaRX-8
Body4dr Sedan4dr Coupe
Wheelbase110.4 in106.4 in
Length191.1 in175.6 in
Width73.2 in69.7 in
Height57.7 in52.8 in
Curb Weight3,494 lb.3,094 lb.
Fuel Capacity18.5 gal.15.9 gal.
Row 1 Headroom39.8 in38.2 in
Row 1 Shoulder Room58.1 in54.8 in
Row 1 Hip Room56.0 in53.3 in
Row 1 Legroom45.5 in42.7 in
Row 2 Headroom37.8 in36.8 in
Row 2 Shoulder Room56.4 in54.9 in
Row 2 Hip Room56.0 in48.1 in
Row 2 Legroom35.6 in32.2 in
Cargo Volume15.9 ft37.6 ft3

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See a complete comparison of Kia Optima vs. Mazda RX-8 specs.

Option Package Details
Mazda RX-8 Grand Touring

6-speed manually-shiftable automatic
FeatureValueRequested?
6-speed manually-shiftable automatic0Yes
1.3L R2
OHV-2v
212 hp@7500
159 lb-ft@5500		1000Yes
Steering-wheel-mounted transmission controls100Yes
Total Requested1100100%
Total Not Requested00%

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