Porsche Boxster Porsche Boxster 2008 Mercedes-Benz SLK Mercedes-Benz SLK 2006

We are 103,000+ car owners sharing real-world car information.

Join Us

Porsche Boxster 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.

Porsche Boxster vs. Mercedes-Benz SLK Invoice Comparison

Lowest Total Price: $67,155

Mercedes-Benz SLK SLK55 AMG   
Difference: $1,670

Lowest Total Invoice: $54,801

Porsche Boxster S   
Difference: $7,799

Calculate Payments

  Down Payment Interest Rate Term
Model Year20082006
ModelBoxsterSLK
TrimSSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Base Price $55,700 $61,500
Base Invoice $43,512 $57,195
Adaptive Sports Seats 3,055  
Auto-dimming rearview mirror 690  
Xenon HID headlights 1,090  
Metallic paint (extra cost) 690 690
Heated front seats 480  
Floor mats 115  
Wind blocker, small 375  
Carbon fiber / leather-wrapped steering wheel 1,360  
CD changer, remote 650 430
Automatic climate control, front 550  
5-speed shiftable automatic 3,210  
Lighting Package   990
Premium Package   1,470
Adaptive Sports Seats 2,597  
Auto-dimming rearview mirror 587  
Xenon HID headlights 927  
Metallic paint (extra cost) 587 642
Heated front seats 408  
Floor mats 98  
Wind blocker, small 319  
Carbon fiber / leather-wrapped steering wheel 1,156  
CD changer, remote 553 400
Automatic climate control, front 468  
5-speed shiftable automatic 2,729  
Lighting Package   921
Premium Package   1,367
Options (change) 12,265 3,580
Options (change) 10,429 3,330
Destination 860 775
Gas Tax 0 1,300
Total Price $68,825 $67,155
Total Invoice $54,801 $62,600

Return to top

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

The process is easy and takes just a minute or two. You'll receive price quotes from local approved dealers within 48 hours.

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

Lowest Adjusted Price: Mercedes-Benz SLK SLK55 AMG
Lowest Adjusted Invoice: Porsche Boxster S
TrueDelta Adjusted Price Difference: $4,675
TrueDelta Adjusted Invoice Difference: $4,998
Model Year20082006
ModelBoxsterSLK
TrimSSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Engine295hp H6355hp V8
TransmissionT5T7
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)18/25 MPG16/22 MPG
Audio (watts, speakers)230, 7?, 9
Tire (rear if not all the same)235/40-18225/40-18
Total Price$68,825$67,155
Adjustments for Features0-3,005
Feature-Adjusted Total Price$68,825$64,150
Total Invoice$54,801$62,600
Adjustments for Features0-2,801
Feature-Adjusted Total Invoice$54,801$59,799

Return to top

Features Comparison: Porsche Boxster vs. Mercedes-Benz SLK

Model Year20082006
ModelBoxsterSLK
TrimSSLK55 AMG
Body2dr Convertible2dr Hardtop conv.
Transmission and Drivetrain 
5-speed manually-shiftable automatic$1000 
7-speed manually-shiftable automatic $1200
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 
Tire-pressure monitor$75 
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 
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, driver 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$6,855$9,860
Value of Feature Adjustments$0$3,005
Value of Feature Adjustments0-2,801

Return to top

Specifications Comparison: Porsche Boxster vs. Mercedes-Benz SLK

Model Year20082006
ModelBoxsterSLK
Body2dr Convertible2dr Hardtop conv.
Wheelbase95.1 in95.7 in
Length170.4 in160.7 in
Width70.9 in70.4 in
Height51.0 in51.0 in
Curb Weight3,053 lb.3,420 lb.
Fuel Capacity17.0 gal.18.5 gal.
Row 1 Headroom38.4 in37.9 in
Row 1 Shoulder Room51.7 in52.2 in
Row 1 Hip Room53.4 in54.6 in
Row 1 Legroom41.6 in42.5 in
Cargo Volume,
Minimum
9.9 ft36.5 ft3
Cargo Volume,
Maximum
9.99.8 ft3

Return to top

Option Package Details
Porsche Boxster S

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 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
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150No
Total Requested80059%
Total Not Requested55041%

Option Package Details
Mercedes-Benz SLK SLK55 AMG

Lighting Package
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Cornering lights50No
Total Requested55092%
Total Not Requested508%
Premium Package
FeatureValueRequested?
Automatic climate control, front200Yes
Universal garage door opener100Yes
Rain-sensing wipers100Yes
Total Requested400100%
Total Not Requested00%

Was this information useful?

We're glad we could help! Share this page:

We're so sorry! Tell us how we can improve it.

See TrueDelta's information for all Porsche models.