Kia Optima Kia Optima 2018 Mercedes-Benz SLK Mercedes-Benz SLK 2008

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Kia Optima vs. Mercedes-Benz SLK 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. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $31,745

Kia Optima SX   
Difference: $21,070

Lowest Total Invoice: $29,566

Kia Optima SX   
Difference: $19,612

Calculate Payments

  Down Payment Interest Rate Term
Model Year2018200820082008
ModelOptimaSLKSLKSLK
TrimSXSLK280SLK350SLK55 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Base Price $30,500 $44,150 $49,450 $63,200
Base Invoice $28,380 $41,060 $45,988 $58,776
Universal garage door opener 350      
Lighting Package   1,010 1,010 1,010
Heating Package   980 980  
Premium II Package   3,995 3,995  
iPod integration   375 375 375
Metallic paint (extra cost)   710 710 710
Automatic climate control, front   720 720 720
Universal garage door opener 291      
Lighting Package   939 939 939
Heating Package   911 911  
Premium II Package   3,715 3,715  
iPod integration   349 349 349
Metallic paint (extra cost)   659 659 659
Automatic climate control, front   670 670 670
Options (change) 350 7,790 7,790 2,815
Options (change) 291 7,243 7,243 2,617
Destination 895 875 875 875
Gas Tax 0 0 0 1,300
Total Price $31,745 $52,815 $58,115 $68,190
Total Invoice $29,566 $49,178 $54,106 $63,568

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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 Mercedes-Benz SLK dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Kia Optima vs. Mercedes-Benz SLK

Lowest Adjusted Price and Invoice: Kia Optima SX
TrueDelta Adjusted Price Difference: $18,960
TrueDelta Adjusted Invoice Difference: $17,647
Model Year2018200820082008
ModelOptimaSLKSLKSLK
TrimSXSLK280SLK350SLK55 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Engine245hp I4228hp V6268hp V6355hp V8
TransmissionT6M6T7T7
DrivetrainFWDRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)?, 6380, 11380, 11?, 9
Tire (rear if not all the same)235/45-18205/55-16225/45-17225/40-18
Total Price$31,745$52,815$58,115$68,190
Adjustments for Features0-2,110-3,160-3,010
Feature-Adjusted Total Price$31,745$50,705$54,955$65,180
Cost Above Minimum$0$0$4,250$14,475
Total Invoice$29,566$49,178$54,106$63,568
Adjustments for Features0-1,965-2,942-2,806
Feature-Adjusted Total Invoice$29,566$47,213$51,164$60,762
Cost Above Minimum$0$0$3,951$13,549

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Features Comparison: Kia Optima vs. Mercedes-Benz SLK

Model Year2018200820082008
ModelOptimaSLKSLKSLK
TrimSXSLK280SLK350SLK55 AMG
Body4dr Sedan2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.
Transmission and Drivetrain 
6-speed manually-shiftable automatic$1100   
6-speed manual $150  
7-speed manually-shiftable automatic  $1200$1200
FWD$0   
RWD $0$0$0
Accessories 
Power rear side windows$200   
Proximity key$250   
Proximity trunk or liftgate opener$125   
Remote window/roof operation $15$15$15
Tilt/telescoping steering wheel, manual$250   
Tilt/telescoping steering wheel, power $350$350$350
Wind blocker, small $100$100$100
Brakes, Airbags, and Other Safety 
911 assist$25   
Active or whiplash-reducing head restraints, front seats$0   
Blind spot warning system$200   
Cross-traffic warning, rear$100   
Knee airbag, passenger $75$75$75
Obstacle detection, rear$250   
Rearview camera$200   
Rollover sensor$50   
Side curtain airbags$350   
Vehicle health reports$0   
Cargo Management 
Cargo mat$40   
Overhead sunglass holder$25   
Climate Control 
Heated windshield washer nozzles $15$15$15
Rain-sensing wipers $175$175$175
Rear air vents$100   
Residual heat $50$50$50
Variable intermittent wipers$75   
Exterior 
Black exterior trim (optional)$0   
Body kit   $0
Laminated front side windows$200   
Painted brake calipers (optional)$0   
Panoramic sunroof$1200   
Power retractable hardtop $6750$6750$6750
Rear spoiler$200  $200
Infotainment 
Android Auto support$100   
App support$0   
Apple CarPlay support$100   
Aux input$50$50$50 
Bluetooth audio streaming$25   
Bluetooth cell phone link$100$100$100 
CD player $125$125$125
iPod integration $100$100$100
SMS text-to-speech reader$25   
Surround sound $250$250 
Telematics service, such as OnStar $200$200$200
USB port$25   
Voice control for external devices$0   
Instruments, Lights, and Mirrors 
Analog clock $25$25$25
Approach detection$25   
Auto-dimming driver-side mirror $75$75$75
Compass$0   
Cornering lights $50$50$50
Fog light, rear $100$100$100
Headlight washers $50$50$50
Illuminated visor mirror, driver$50   
Illuminated visor mirror, passenger$50   
LED headlights$1000   
Mirror tilt-down in reverse $25$25$25
Power-folding mirrors$50   
Steering-linked headlights$150   
Visor mirror, driver $10$10$10
Visor mirror, passenger $10$10$10
Xenon HID headlights $500$500$500
Seats and Interior Trim 
Aluminum trim   $100
Center armrest(s), second row$50   
Cooled or ventilated front seats$300   
Door sill trim plates $100$100$100
Folding second row seats$300   
Leather door panel trim $250$250$250
Memory system, passenger seat $150$150$150
Neck-level heating, front seats $150$150 
No leather in second row $-300$-300$-300
Power 4-way lumbar adjuster, passenger seat $150$150$150
Power lumbar adjuster, passenger seat$100   
Synthetic suede inserts in leather seating surfaces   $0
Suspension, Wheels, and Tires 
Alloy wheels $350$350$350
Electronic systems calibration selector$200   
Machined alloy wheels$350   
Performance steering system (optional)$0   
Sport suspension (upgrade)$0  $0
Transmission 
Steering-wheel-mounted transmission controls$100  $100
Total Value of Features$8,090$10,200$11,250$11,100
Value of Feature Adjustments$0$2,110$3,160$3,010
Value of Feature Adjustments0-1,965-2,942-2,806

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Specifications Comparison: Kia Optima vs. Mercedes-Benz SLK

Model Year20182008
ModelOptimaSLK
Body4dr Sedan2dr Hardtop conv.
Wheelbase110.4 in95.7 in
Length191.1 in160.7 in
Width73.2 in70.4 in
Height57.7 in51.0 in
Curb Weight3,220 lb.3,210 lb.
Fuel Capacity18.5 gal.18.5 gal.
Row 1 Headroom39.8 in37.9 in
Row 1 Shoulder Room58.1 in52.2 in
Row 1 Hip Room56.0 in54.6 in
Row 1 Legroom45.5 in42.5 in
Row 2 Headroom37.8 in0.0 in
Row 2 Shoulder Room56.4 in0.0 in
Row 2 Hip Room56.0 in0.0 in
Row 2 Legroom35.6 in0.0 in
Cargo Volume,
Minimum
15.9 ft36.5 ft3
Cargo Volume,
Maximum
15.99.8 ft3

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Option Package Details
Mercedes-Benz SLK SLK280

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50No
Cornering lights50No
Total Requested50083%
Total Not Requested10017%
Heating Package
FeatureValueRequested?
Heated front seats200Yes
Neck-level heating, front seats150No
Total Requested20057%
Total Not Requested15043%
Premium II Package
FeatureValueRequested?
Bluetooth cell phone link100Yes
Surround sound250No
Harman/Kardon, 380W, 11 speakers (with subwoofer)350No
Aux input50Yes
Rain-sensing wipers175No
Memory system, driver seat200Yes
Memory system, passenger seat150No
Satellite radio200Yes
Power height adjuster, passenger seat50Yes
Tilt/telescoping steering wheel, power100No
Power tilt adjuster, passenger seat50Yes
Power fore-aft adjuster, driver seat100Yes
Auto-dimming driver-side mirror75No
Power height adjuster, driver seat50Yes
Remote window/roof operation15No
Power tilt adjuster, driver seat50Yes
Mirror tilt-down in reverse25No
Power recliner, driver seat100Yes
Interior ambient lighting150Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power recliner, passenger seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150No
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Total Requested170057%
Total Not Requested129043%

Option Package Details
Mercedes-Benz SLK SLK350

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50No
Cornering lights50No
Total Requested50083%
Total Not Requested10017%
Heating Package
FeatureValueRequested?
Heated front seats200Yes
Neck-level heating, front seats150No
Total Requested20057%
Total Not Requested15043%
Premium II Package
FeatureValueRequested?
Bluetooth cell phone link100Yes
Surround sound250No
Harman/Kardon, 380W, 11 speakers (with subwoofer)350No
Aux input50Yes
Rain-sensing wipers175No
Memory system, driver seat200Yes
Memory system, passenger seat150No
Satellite radio200Yes
Power height adjuster, passenger seat50Yes
Tilt/telescoping steering wheel, power100No
Power tilt adjuster, passenger seat50Yes
Power fore-aft adjuster, driver seat100Yes
Auto-dimming driver-side mirror75No
Power height adjuster, driver seat50Yes
Remote window/roof operation15No
Power tilt adjuster, driver seat50Yes
Mirror tilt-down in reverse25No
Power recliner, driver seat100Yes
Interior ambient lighting150Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power recliner, passenger seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150No
Universal garage door opener100Yes
Auto-dimming rearview mirror150Yes
Total Requested170057%
Total Not Requested129043%

Option Package Details
Mercedes-Benz SLK SLK55 AMG

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50No
Cornering lights50No
Total Requested50083%
Total Not Requested10017%

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