Mercedes-Benz SLK Mercedes-Benz SLK 2008 Porsche Boxster Porsche Boxster 2008

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Mercedes-Benz SLK vs. Porsche Boxster 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.

Mercedes-Benz SLK vs. Porsche Boxster Invoice Comparison

Lowest Total Price: $70,875

Mercedes-Benz SLK SLK55 AMG   
Difference: $1,560

Lowest Total Invoice: $57,869

Porsche Boxster S   
Difference: $8,195

Calculate Payments

  Down Payment Interest Rate Term
Model Year20082008
ModelSLKBoxster
TrimSLK55 AMGS
Body2dr Hardtop conv.2dr Convertible
Base Price $63,200 $55,700
Base Invoice $58,776 $43,512
Lighting Package 1,010  
Metallic paint (extra cost) 710 690
Automatic climate control, front 720 550
CD changer, remote 450 650
Navigation system 1,200 3,110
Premium II Package 1,410  
Adaptive Sports Seats   3,055
Preferred Package   2,190
Xenon HID headlights   1,090
Carbon fiber / leather-wrapped steering wheel   1,360
Wind blocker, small   375
5-speed shiftable automatic   2,805
Lighting Package 939  
Metallic paint (extra cost) 659 587
Automatic climate control, front 670 468
CD changer, remote 418 553
Navigation system 1,116 2,644
Premium II Package 1,311  
Adaptive Sports Seats   2,597
Preferred Package   1,862
Xenon HID headlights   927
Carbon fiber / leather-wrapped steering wheel   1,156
Wind blocker, small   319
5-speed shiftable automatic   2,384
Options (change) 5,500 15,875
Options (change) 5,113 13,497
Destination 875 860
Gas Tax 1,300 0
Total Price $70,875 $72,435
Total Invoice $66,064 $57,869

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

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TrueDelta Value Comparison: Mercedes-Benz SLK vs. Porsche Boxster

Lowest Adjusted Price: Mercedes-Benz SLK SLK55 AMG
Lowest Adjusted Invoice: Porsche Boxster S
TrueDelta Adjusted Price Difference: $5,440
TrueDelta Adjusted Invoice Difference: $4,578
Model Year20082008
ModelSLKBoxster
TrimSLK55 AMGS
Body2dr Hardtop conv.2dr Convertible
Engine355hp V8295hp H6
TransmissionT7T5
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)14/20 MPG18/25 MPG
Audio (watts, speakers)380, 11325, 11
Tire (rear if not all the same)225/40-18235/40-18
Total Price$70,875$72,435
Adjustments for Features-3,8800
Feature-Adjusted Total Price$66,995$72,435
Total Invoice$66,064$57,869
Adjustments for Features-3,6170
Feature-Adjusted Total Invoice$62,447$57,869

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Features Comparison: Mercedes-Benz SLK vs. Porsche Boxster

Model Year20082008
ModelSLKBoxster
TrimSLK55 AMGS
Body2dr Hardtop conv.2dr Convertible
Transmission and Drivetrain 
7-speed manually-shiftable automatic$1200 
5-speed manually-shiftable automatic $1000
RWD$0$0
Accessories 
Remote window/roof operation$15 
Tilt/telescoping steering wheel, manual $250
Tilt/telescoping steering wheel, power$350 
Brakes, Airbags, and Other Safety 
Brake assist$50 
Knee airbag, driver$75 
Knee airbag, passenger$75 
Roll bar $200
Temporary spare tire$150 
Cargo Management 
Cargo net $40
Climate Control 
Dual-zone climate control$125 
Residual heat$50 
Water-repellent front-door glass $15
Engine / Motor 
Mid-engine configuration $0
Exterior 
Body kit$0 
Power convertible top $4000
Power retractable hardtop$6750 
Rear spoiler$200 
Retractable rear spoiler $400
Infotainment 
Aux input$50 
Bluetooth cell phone link$100 
Satellite radio$200 
Telematics service, such as OnStar$200 
Instruments, Lights, and Mirrors 
Analog clock$25 
Auto-dimming passenger-side mirror $75
Automatic headlights$125 
Cornering lights$50 
Illuminated visor mirror, driver $50
Illuminated visor mirror, passenger $50
Mirror tilt-down in reverse$25 
Turn signals on or near mirrors$25 
Visor mirror, driver$10 
Visor mirror, passenger$10 
Seats and Interior Trim 
Aluminum trim$100 
Carbon fiber / leather-wrapped steering wheel $150
Leather-wrapped steering wheel$150 
Memory system, passenger seat$150 
Power 4-way lumbar adjuster, passenger seat$150 
Power seatback bolsters, driver seat $100
Power seatback bolsters, passenger seat $100
Power thigh bolsters, driver seat $100
Power thigh bolsters, passenger seat $100
Synthetic suede inserts in leather seating surfaces$0 
Suspension, Wheels, and Tires 
Sport suspension (upgrade)$0 
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$10,510$6,630
Value of Feature Adjustments$3,880$0
Value of Feature Adjustments-3,6170

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Specifications Comparison: Mercedes-Benz SLK vs. Porsche Boxster

Model Year20082008
ModelSLKBoxster
Body2dr Hardtop conv.2dr Convertible
Wheelbase95.7 in95.1 in
Length160.7 in170.4 in
Width70.4 in70.9 in
Height51.0 in51.0 in
Curb Weight3,420 lb.3,053 lb.
Fuel Capacity18.5 gal.17.0 gal.
Row 1 Headroom37.9 in38.4 in
Row 1 Shoulder Room52.2 in51.7 in
Row 1 Hip Room54.6 in53.4 in
Row 1 Legroom42.5 in41.6 in
Cargo Volume,
Minimum
6.5 ft39.9 ft3
Cargo Volume,
Maximum
9.8 ft39.9 ft3

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Option Package Details
Mercedes-Benz SLK SLK55 AMG

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Cornering lights50No
Total Requested55092%
Total Not Requested508%
Premium II Package
FeatureValueRequested?
Bluetooth cell phone link100No
Surround sound250Yes
Harman/Kardon, 380W, 11 speakers (with subwoofer)350No
Aux input50No
Total Requested25033%
Total Not Requested50067%

Option Package Details
Porsche Boxster S

Xenon HID headlights
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Total Requested550100%
Total Not Requested00%
Carbon fiber / leather-wrapped steering wheel
FeatureValueRequested?
Carbon fiber / leather-wrapped steering wheel0No
Audio controls on steering wheel125Yes
Total Requested125100%
Total Not Requested00%
Adaptive Sports Seats
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver100No
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100No
Front sport buckets100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power fore-aft adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Total Requested95070%
Total Not Requested40030%
Preferred Package
FeatureValueRequested?
Surround sound250Yes
Bose, 325W, 11 speakers (with subwoofer)350No
Rain-sensing wipers100Yes
Floor mats75Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Heated front seats200Yes
Auto-dimming rearview mirror150Yes
Total Requested85067%
Total Not Requested42533%

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