Mercedes-Benz SL Mercedes-Benz SL 2008 Porsche 911 Porsche 911 2008

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

Join Us

Mercedes-Benz SL vs. Porsche 911 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 911 Invoice Comparison

Lowest Total Price: $109,970

Porsche 911 Carrera S   
Difference: $81,835

Lowest Total Invoice: $95,830

Porsche 911 Carrera S   
Difference: $82,792

Calculate Payments

  Down Payment Interest Rate Term
Model Year20082008
ModelSL911
TrimSL65 AMGCarrera S
Body2dr Hardtop conv.2dr Convertible
Base Price $187,200 $94,100
Base Invoice $174,096 $82,209
Obstacle detection, rear 1,130 530
Wood trim 0 890
Adaptive Sports Seats   3,055
Auto-dimming rearview mirror   385
Metallic paint (extra cost)   690
Floor mats   140
Bluetooth cell phone link   960
Navigation system   2,110
Heated front seats   500
CD changer, remote   650
Audio controls on steering wheel   990
Synthetic suede steering wheel   1,105
Upholstered instrument panel, leather   3,005
Obstacle detection, rear 1,051 451
Wood trim 0 757
Adaptive Sports Seats   2,597
Auto-dimming rearview mirror   327
Metallic paint (extra cost)   587
Floor mats   119
Bluetooth cell phone link   816
Navigation system   1,794
Heated front seats   425
CD changer, remote   553
Audio controls on steering wheel   842
Synthetic suede steering wheel   939
Upholstered instrument panel, leather   2,554
Options (change) 1,130 15,010
Options (change) 1,051 12,761
Destination 875 860
Gas Tax 2,600 0
Total Price $191,805 $109,970
Total Invoice $178,622 $95,830

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 Mercedes-Benz SL dealer quotes or Porsche 911 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: Mercedes-Benz SL vs. Porsche 911

Lowest Adjusted Price and Invoice: Porsche 911 Carrera S
TrueDelta Adjusted Price Difference: $72,325
TrueDelta Adjusted Invoice Difference: $73,936
Model Year20082008
ModelSL911
TrimSL65 AMGCarrera S
Body2dr Hardtop conv.2dr Convertible
Engine604hp V12355hp H6
TransmissionT5M6
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)11/18 MPG16/23 MPG
Audio (watts, speakers)250, 8235, 9
Tire (rear if not all the same)255/35-19235/35-19
Total Price$191,805$109,970
Adjustments for Features-9,5100
Feature-Adjusted Total Price$182,295$109,970
Total Invoice$178,622$95,830
Adjustments for Features-8,8560
Feature-Adjusted Total Invoice$169,766$95,830

Return to top

Features Comparison: Mercedes-Benz SL vs. Porsche 911

Model Year20082008
ModelSL911
TrimSL65 AMGCarrera S
Body2dr Hardtop conv.2dr Convertible
Transmission and Drivetrain 
5-speed manually-shiftable automatic$1000 
6-speed manual $150
RWD$0$0
Accessories 
Power trunk closer$350 
Proximity key$250 
Tilt/telescoping steering wheel, manual $250
Tilt/telescoping steering wheel, power$350 
Wind blocker $300
Wind blocker, small$100 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Knee airbag, driver$75 
Obstacle detection, front$150 
Temporary spare tire$150 
Cargo Management 
Air-conditioned storage compartment$50 
Storage compartment under front seat(s)$50 
Climate Control 
Automatic air recirculation$100 
Dual-zone climate control$125 
Residual heat$50 
Water-repellent front-door glass $15
Wiper de-icer$25 
Engine / Motor 
Rear-engine configuration $0
Exterior 
Body kit$0 
Power convertible top $4000
Power retractable hardtop$6750 
Retractable rear spoiler $400
Infotainment 
Off-road navigation system $0
Satellite radio$200 
Surround sound$250 
Telematics service, such as OnStar$200 
Instruments, Lights, and Mirrors 
Cornering lights$50 
Fog light, rear$100 
Mirror tilt-down in reverse$25 
Turn signals on or near mirrors$25 
Seats and Interior Trim 
Cooled or ventilated front seats$300 
Folding second row seats $300
Memory system, passenger seat$150 
No leather in second row$-300 
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Power thigh bolsters, driver seat $100
Power thigh bolsters, passenger seat $100
Power thigh support length adjuster, driver seat$100 
Power thigh support length adjuster, passenger seat$100 
Synthetic suede headliner$650 
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500
Adaptive hydraulic struts, auto-leveling and ht. adjustable$4000 
Sport suspension (upgrade)$0 
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$15,625$6,115
Value of Feature Adjustments$9,510$0
Value of Feature Adjustments-8,8560

Return to top

Specifications Comparison: Mercedes-Benz SL vs. Porsche 911

Model Year20082008
ModelSL911
Body2dr Hardtop conv.2dr Convertible
Wheelbase100.8 in92.5 in
Length178.5 in175.6 in
Width71.5 in71.2 in
Height51.0 in51.6 in
Curb Weight4,564 lb.3,341 lb.
Fuel Capacity21.1 gal.17.0 gal.
Row 1 Headroom37.7 in38.0 in
Row 1 Shoulder Room54.0 in51.7 in
Row 1 Hip Room53.9 in53.4 in
Row 1 Legroom42.9 in41.6 in
Row 2 Headroom0.0 in31.5 in
Cargo Volume,
Minimum
7.3 ft34.8 ft3
Cargo Volume,
Maximum
10.2 ft34.8 ft3

Return to top

Option Package Details
Porsche 911 Carrera S

Auto-dimming rearview mirror
FeatureValueRequested?
Auto-dimming rearview mirror150Yes
Auto-dimming driver-side mirror75Yes
Total Requested225100%
Total Not Requested00%
Navigation system
FeatureValueRequested?
Navigation system600Yes
Off-road navigation system0No
Total Requested600100%
Total Not Requested00%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather1000Yes
Leather upholstery, extended coverage0No
Total Requested1000100%
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 4-way lumbar adjuster, driver seat150Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
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
Total Requested130087%
Total Not Requested20013%

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 Convertibles
See TrueDelta's information for all Mercedes-Benz models.