Mercedes-Benz SL Mercedes-Benz SL 2015 Porsche Boxster Porsche Boxster 2008

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Mercedes-Benz SL 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 SL vs. Porsche Boxster Invoice Comparison

Lowest Total Price: $83,015

Porsche Boxster S   
Difference: $75,500

Lowest Total Invoice: $66,864

Porsche Boxster S   
Difference: $80,621

Calculate Payments

  Down Payment Interest Rate Term
Model Year201520152008
ModelSLSLBoxster
TrimSL63 AMGSL65 AMGS
Body2dr Hardtop conv.2dr Hardtop conv.2dr Convertible
Base Price $148,050 $215,250 $55,700
Base Invoice $137,687 $200,183 $43,512
Wood trim 0 0 890
Wood/leather-wrapped steering wheel 590 590 1,360
Ceramic brake rotors 8,950 8,950 8,150
Sport Chrono Package     920
Adaptive dampers - electrical     1,990
Adaptive Sports Seats     3,055
Auto-dimming rearview mirror     690
Xenon HID headlights     1,090
Wind blocker, small     375
Metallic paint (extra cost)     690
Floor mats     115
Heated front seats     480
Obstacle detection, rear     530
Automatic climate control, front     550
Illuminated door sill trim plates     725
Navigation system     3,110
Upholstered instrument panel, leather     1,735
Wood trim 0 0 757
Wood/leather-wrapped steering wheel 549 549 1,156
Ceramic brake rotors 8,324 8,324 6,928
Sport Chrono Package     782
Adaptive dampers - electrical     1,692
Adaptive Sports Seats     2,597
Auto-dimming rearview mirror     587
Xenon HID headlights     927
Wind blocker, small     319
Metallic paint (extra cost)     587
Floor mats     98
Heated front seats     408
Obstacle detection, rear     451
Automatic climate control, front     468
Illuminated door sill trim plates     616
Navigation system     2,644
Upholstered instrument panel, leather     1,475
Options (change) 9,540 9,540 26,455
Options (change) 8,873 8,873 22,492
Destination 925 925 860
Gas Tax 0 1,300 0
Total Price $158,515 $227,015 $83,015
Total Invoice $147,485 $211,281 $66,864

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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 SL dealer quotes or Porsche Boxster dealer quotes from dealers using our car quote form.

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

Lowest Adjusted Price and Invoice: Porsche Boxster S
TrueDelta Adjusted Price Difference: $60,125
TrueDelta Adjusted Invoice Difference: $66,316
Model Year201520152008
ModelSLSLBoxster
TrimSL63 AMGSL65 AMGS
Body2dr Hardtop conv.2dr Hardtop conv.2dr Convertible
Engine577hp V8621hp V12295hp H6
TransmissionT7T7M6
DrivetrainRWDRWDRWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG
Audio (watts, speakers)600, 11900, 12230, 7
Tire (rear if not all the same)255/35-19255/35-19235/40-18
Total Price$158,515$227,015$83,015
Adjustments for Features-15,375-21,6750
Feature-Adjusted Total Price$143,140$205,340$83,015
Cost Above Minimum$0$62,200$0
Total Invoice$147,485$211,281$66,864
Adjustments for Features-14,305-20,1730
Feature-Adjusted Total Invoice$133,180$191,108$66,864
Cost Above Minimum$0$57,928$0

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Features Comparison: Mercedes-Benz SL vs. Porsche Boxster

Model Year201520152008
ModelSLSLBoxster
TrimSL63 AMGSL65 AMGS
Body2dr Hardtop conv.2dr Hardtop conv.2dr Convertible
Transmission and Drivetrain 
7-speed manually-shiftable automatic$1200$1200 
6-speed manual  $150
RWD$0$0$0
Accessories 
Adaptive cruise control, all-speed $850 
Cruise control$150 $150
Hands-free trunk or liftgate$100$100 
Power door closers $300 
Power trunk closer$350$350 
Proximity key$250$250 
Remote app$25$25 
Remote window/roof operation$15$15 
Semi-automated parking system$500$500 
Tilt/telescoping steering wheel, manual  $250
Tilt/telescoping steering wheel, power$350$350 
Wind blocker, power small$300$300 
Wind blocker, small  $100
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0 
Auto-raising roll bars / headrests$500$500 
Automatic braking, high-speed or partial $200 
Automatic braking, low-speed $200 
Blind spot collision prevention $150 
Blind spot warning system $200 
Brake assist$50$50 
Brake- or yaw-sensor-initiated collision preparation system$0  
Driver drowsiness monitor$150$150 
Forward collision warning $200 
Knee airbag, driver$75$75 
Knee airbag, passenger$75$75 
Lane departure prevention $150 
Lane departure warning $200 
Night vision $1750 
Obstacle detection, front$150$150 
Radar- or camera-based collision preparation system $0 
Rearview camera$200$200 
Roll bar  $200
Side curtain airbags$350$350 
Torque vectoring, brake-based$100$100 
Cargo Management 
Air-conditioned storage compartment$50$50 
Cargo net  $40
Storage compartment under front seat(s)$50$50 
Climate Control 
Adaptive windshield washer system$0$0 
Automatic air recirculation$100$100 
Dual-zone climate control$125$125 
Residual heat$50$50 
Water-repellent front-door glass  $15
Wiper de-icer$25$25 
Drivetrain 
Limited-slip rear differential$300$300 
Engine / Motor 
Automatic start / stop$150$150 
Mid-engine configuration  $0
Raised top speed limiter$0$0 
Exterior 
Electronically-variable tint, sunroof or glass roof panel $2000 
Glass roof panel(s)$300$300 
Power convertible top  $4000
Power retractable hardtop$6750$6750 
Rear spoiler$200$200 
Retractable rear spoiler  $400
Infotainment 
App support$0$0 
Aux input$50$50 
Bluetooth audio streaming$25$25 
Bluetooth cell phone link$100$100 
DVD-compatible player$0$0 
HD radio$50$50 
In-vehicle Internet$150$150 
iPod integration$100$100 
Media drive$15$15 
MP3-compatible player$50$50 
Navigation map updates, three years$0$0 
Satellite radio$200$200 
SD Card slot$25$25 
SMS text-to-speech reader$25$25 
Surround sound$250$250 
Telematics service, such as OnStar, with navigation$225$225 
Traffic + travel information$25$25 
Voice control for nav and audio$100$100 
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200$200 
Auto-dimming passenger-side mirror  $75
Automatic headlights$125$125 
Cornering lights$50$50 
Mirror tilt-down in reverse$25$25 
Steering-linked headlights$150$150 
Turn signals on or near mirrors$25$25 
Seats and Interior Trim 
Automatic seat bolsters, driver$300$300 
Automatic seat bolsters, front passenger$300$300 
Cooled or ventilated front seats$300$300 
Leather headliner $1000 
Massage, driver seat$100$100 
Massage, passenger seat$100$100 
Memory system, passenger seat$150$150 
Neck-level heating, front seats$150$150 
Power 4-way lumbar adjuster, passenger seat$150$150 
Power headrest height adjuster, driver seat$50$50 
Power headrest height adjuster, passenger seat$50$50 
Power seatback bolsters, driver seat  $100
Power seatback bolsters, passenger seat  $100
Power thigh bolsters, driver seat  $100
Power thigh bolsters, passenger seat  $100
Power thigh support length adjuster, driver seat$100$100 
Power thigh support length adjuster, passenger seat$100$100 
Synthetic suede headliner$650  
Suspension, Wheels, and Tires 
Adaptive dampers - electrical  $500
Adaptive hydraulic struts, auto-leveling and ht. adjustable$4000$4000 
Sport suspension (upgrade)$0$0 
Transmission 
Launch control$100  
Steering-wheel-mounted transmission controls$100$100 
Total Value of Features$21,655$27,955$6,280
Value of Feature Adjustments$15,375$21,675$0
Value of Feature Adjustments-14,305-20,1730

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Specifications Comparison: Mercedes-Benz SL vs. Porsche Boxster

Model Year20152008
ModelSLBoxster
Body2dr Hardtop conv.2dr Convertible
Wheelbase101.8 in95.1 in
Length181.8 in170.4 in
Width73.9 in70.9 in
Height51.8 in51.0 in
Curb Weight3,936 lb.2,856 lb.
Fuel Capacity19.8 gal.17.0 gal.
Row 1 Headroom39.1 in38.4 in
Row 1 Shoulder Room55.5 in51.7 in
Row 1 Hip Room0.0 in53.4 in
Row 1 Legroom42.9 in41.6 in
Cargo Volume,
Minimum
8.5 ft39.9 ft3
Cargo Volume,
Maximum
13.5 ft39.9 ft3

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Option Package Details
Porsche Boxster S

Auto-dimming rearview mirror
FeatureValueRequested?
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Total Requested32581%
Total Not Requested7519%
Xenon HID headlights
FeatureValueRequested?
Xenon HID headlights500Yes
Headlight washers50Yes
Total Requested550100%
Total Not Requested00%
Wood/leather-wrapped steering wheel
FeatureValueRequested?
Wood/leather-wrapped steering wheel150Yes
Audio controls on steering wheel125Yes
Total Requested275100%
Total Not Requested00%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather1000Yes
Leather upholstery, extended coverage0No
Total Requested1000100%
Total Not Requested00%
Sport Chrono Package
FeatureValueRequested?
Chronometer100Yes
Electronic systems calibration selector200Yes
Total Requested300100%
Total Not Requested00%
Adaptive Sports Seats
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
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
Total Requested115085%
Total Not Requested20015%

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