Mercedes-Benz SL Mercedes-Benz SL 2009 Porsche 911 Porsche 911 2021

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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: $108,495

Mercedes-Benz SL SL550   
Difference: $24,265

Calculate Payments

  Down Payment Interest Rate Term
Model Year20092009200920092021202120212021
ModelSLSLSLSL911911911911
TrimSL550SL600SL63 AMGSL65 AMGCarreraCarrera STurboTurbo S
Body2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Base Price $98,500 $139,100 $135,000 $194,700 $112,000 $127,900 $183,600 $216,300
Obstacle detection, rear 1,140   1,140          
Premium I Package 3,750              
Illuminated door sill trim plates 700 700 700 700        
Adaptive cruise control 2,230 2,230 2,230 2,230        
Wood trim     0 0 1,990 1,990 1,990 0
Adaptive sport seats plus         3,825 3,825 1,145  
Adaptive cruise control, all-speed         2,490 2,490 2,490 2,490
Illuminated carbon fiber door sill trim plates         1,275 1,275 1,275 1,275
Upholstered instrument panel, leather         3,490 3,490    
Body kit         750 750 750 750
Synthetic suede steering wheel         910 910 910 910
Metallic paint (extra cost)         710 710    
Premium Package Plus         3,970 3,970    
Interior ambient lighting             510 510
Proximity key             1,090 1,090
Cooled or ventilated front seats             840 840
Obstacle detection, rear 1,060   1,060          
Premium I Package 3,488              
Illuminated door sill trim plates 651 651 651 651        
Adaptive cruise control 2,074 2,074 2,074 2,074        
Wood trim     0 0 1,692 1,692 1,692 0
Adaptive sport seats plus         3,251 3,251 973  
Adaptive cruise control, all-speed         2,117 2,117 2,117 2,117
Illuminated carbon fiber door sill trim plates         1,084 1,084 1,084 1,084
Upholstered instrument panel, leather         2,967 2,967    
Body kit         638 638 638 638
Synthetic suede steering wheel         774 774 774 774
Metallic paint (extra cost)         604 604    
Premium Package Plus         3,375 3,375    
Interior ambient lighting             434 434
Proximity key             927 927
Cooled or ventilated front seats             714 714
Options (change) 7,820 2,930 4,070 2,930 19,410 19,410 11,000 7,865
Options (change) 7,273 2,725 3,785 2,725 16,502 16,502 9,353 6,688
Destination 875 875 875 875 1,350 1,350 1,350 1,350
Gas Tax 1,300 2,600 2,600 2,600 0 0 0 0
Total Price $108,495 $145,505 $142,545 $201,105 $132,760 $148,660 $195,950 $225,515

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While we strive for accuracy, the site is not error-free, and prices can change at any time.

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TrueDelta Value Comparison: Mercedes-Benz SL vs. Porsche 911

Lowest Adjusted Price: Mercedes-Benz SL SL550
Lowest Adjusted Invoice: Porsche 911 Turbo S
TrueDelta Adjusted Price Difference: $27,750
TrueDelta Adjusted Invoice Difference: $89,588
Model Year20092009200920092021202120212021
ModelSLSLSLSL911911911911
TrimSL550SL600SL63 AMGSL65 AMGCarreraCarrera STurboTurbo S
Body2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Engine382hp V8510hp V12518hp V8604hp V12379hp H6443hp H6572hp H6640hp H6
TransmissionT7T5T7T5S8M7S8S8
DrivetrainRWDRWDRWDRWDRWDRWDAWDAWD
EPA Fuel Economy (city/highway)/ MPG/ MPG/ MPG/ MPG/ MPG/ MPG/ MPG/ MPG
Audio (watts, speakers)510, 10510, 10510, 10510, 10?, 8?, 8555, 12555, 12
Tire (rear if not all the same)255/40-18255/40-18255/35-19255/35-19235/40-19245/35-20255/35-20255/35-20
Total Price$108,495$145,505$142,545$201,105$132,760$148,660$195,950$225,515
Adjustments for Features-4,085-5,035-4,085-5,135-6000-5,900-10,600
Feature-Adjusted Total Price$104,410$140,470$138,460$195,970$132,160$148,660$190,050$214,915
Cost Above Minimum$0$36,060$34,050$91,560$0$16,500$57,890$82,755

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Features Comparison: Mercedes-Benz SL vs. Porsche 911

Model Year20092009200920092021202120212021
ModelSLSLSLSL911911911911
TrimSL550SL600SL63 AMGSL65 AMGCarreraCarrera STurboTurbo S
Body2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Hardtop conv.2dr Convertible2dr Convertible2dr Convertible2dr Convertible
Transmission and Drivetrain 
7-speed manually-shiftable automatic$1200 $1200     
5-speed manually-shiftable automatic $1000 $1000    
8-speed automated manual    $1300 $1300$1300
7-speed manual     $300  
RWD$0$0$0$0$0$0  
AWD      $1700$1700
Accessories 
Adaptive cruise control$600$600$600$600    
Adaptive cruise control, all-speed    $850$850$850$850
Power trunk closer$350$350 $350    
Proximity key$250$250 $250$250$250$250$250
Remote app    $25$25$25$25
Wind blocker    $300$300$300$300
Wind blocker, small$100$100$100$100    
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0$0$0$0    
Automatic braking, high-speed or partial    $200$200$200$200
Ceramic brake rotors       $4000
Forward collision warning    $200$200$200$200
Knee airbag, passenger    $75$75$75$75
Radar- or camera-based collision preparation system    $0$0$0$0
Rearview camera    $200$200$200$200
Secondary collision brake assist    $25$25$25$25
Side curtain airbags    $350$350$350$350
Temporary spare tire$150$150$150$150    
Torque vectoring, brake-based     $100$100$100
Cargo Management 
Air-conditioned storage compartment$50$50$50$50    
Storage compartment under front seat(s)$50$50$50$50    
Climate Control 
Water-repellent front-door glass    $15$15$15$15
Wiper de-icer$25$25$25$25    
Drivetrain 
Electronically-variable engine mounts (performance-oriented)      $500$500
Limited-slip rear differential     $300$300$300
Engine / Motor 
Automatic start / stop    $150$150$150$150
Rear-engine configuration    $0$0$0$0
Regenerative braking    $0$0$0$0
Exterior 
Active front spoiler      $500$500
Active grille shutters    $0$0$0$0
Active rear spoiler    $300$300$300$300
Body kit  $0$0$0$0$0$0
Glass roof panel(s) $300 $300    
Painted brake calipers (optional)     $0$0$0
Power convertible top    $4000$4000$4000$4000
Power retractable hardtop$6750$6750$6750$6750    
Retractable rear spoiler    $400$400  
Tall rear wing-type spoiler      $500$500
Infotainment 
4G LTE connectivity    $0$0$0$0
App support    $0$0$0$0
Apple CarPlay support    $100$100$100$100
Audio controls on steering wheel$125$125$125$125    
Bluetooth audio streaming    $25$25$25$25
CD changer, in-dash$325$325$325$325    
CD player    $125$125$125$125
DVD-Audio-compatible player    $0$0$0$0
DVD-compatible player$0$0$0$0    
Handwriting recognition    $200$200$200$200
HD radio    $50$50$50$50
In-vehicle Internet    $150$150$150$150
iPod integration$100$100$100$100    
Navigation map updates, three years    $0$0$0$0
Off-road navigation system    $0$0$0$0
Surround sound$250$250$250$250  $250$250
Traffic information    $25$25$25$25
USB port    $25$25$25$25
Wi-Fi hotspot    $50$50$50$50
Instruments, Lights, and Mirrors 
Auto-dimming headlights    $200$200 $200
Auto-dimming passenger-side mirror    $75$75$75$75
Boost gauge    $75$75$75$75
Chronometer      $100$100
Fog lights$125$125$125$125    
LED headlights    $1000$1000$1000$1000
Mirror tilt-down in reverse$25$25$25$25    
Performance meter      $150$150
Turn signals on or near mirrors$25$25$25$25    
Xenon HID headlights$500$500$500$500    
Seats and Interior Trim 
Cooled or ventilated front seats$300$300 $300$300$300$300$300
Folding second row seats w/o opening to trunk    $75$75$75$75
Illuminated carbon fiber door sill trim plates    $300$300$300$300
Illuminated door sill trim plates$200$200$200$200    
Leather-wrapped steering wheel$150       
Massage, driver seat $100$100$100    
Massage, passenger seat $100$100$100    
Memory system, passenger seat$150$150$150$150    
Neck-level heating, front seats$150$150 $150    
No leather in second row$-300$-300$-300$-300    
Power headrest height adjuster, driver seat$50$50$50$50    
Power headrest height adjuster, passenger seat$50$50$50$50    
Power thigh bolsters, driver seat    $100$100$100$100
Power thigh bolsters, passenger seat    $100$100$100$100
Synthetic suede headliner $650$650$650    
Synthetic suede steering wheel  $150$150$150$150$150$150
Wood/leather-wrapped steering wheel $150      
Suspension, Wheels, and Tires 
Active stabilizer bars       $500
Adaptive dampers - electrical    $500$500$500$500
Adaptive hydraulic struts, auto-leveling and ht. adjustable$4000$4000$4000$4000    
Alloy wheels$350$350$350$350$350$350 $350
Electronic systems calibration selector      $200$200
Polished alloy wheels      $350 
Rear wheel steering      $1500$1500
Sport suspension (upgrade)  $0$0    
Transmission 
Launch control  $100     
Steering-wheel-mounted transmission controls  $100$100  $100$100
Total Value of Features$16,100$17,050$16,100$17,150$12,615$12,015$17,915$22,615
Value of Feature Adjustments$4,085$5,035$4,085$5,135$600$0$5,900$10,600
Value of Feature Adjustments-3,805-4,691-3,806-4,782-810-322-378

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Specifications Comparison: Mercedes-Benz SL vs. Porsche 911

Model Year20092021
ModelSL911
Body2dr Hardtop conv.2dr Convertible
Wheelbase100.8 in96.5 in
Length180.4 in177.9 in
Width71.5 in72.9 in
Height51.1 in51.1 in
Curb Weight4,221 lb.3,509 lb.
Fuel Capacity21.1 gal.16.9 gal.
Row 1 Headroom37.7 in0.0 in
Row 1 Shoulder Room54.0 in0.0 in
Row 1 Hip Room53.9 in0.0 in
Row 1 Legroom42.9 in0.0 in
Cargo Volume,
Minimum
7.2 ft34.6 ft3
Cargo Volume,
Maximum
10.2 ft34.6 ft3

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Option Package Details
Mercedes-Benz SL SL550

Premium I Package
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Power decklid350No
Proximity key250Yes
Neck-level heating, front seats150No
Power 4-way lumbar adjuster, driver seat50Yes
Power seatback bolsters, driver100Yes
Power 4-way lumbar adjuster, passenger seat50Yes
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Total Requested95066%
Total Not Requested50034%

Option Package Details
Porsche 911 Carrera

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700No
Radar- or camera-based collision preparation system0No
Automatic braking, high-speed or partial200No
Forward collision warning200No
Total Requested00%
Total Not Requested1100100%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather1000Yes
Leather upholstery, extended coverage0No
Total Requested1000100%
Total Not Requested00%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Power thigh support length adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support length adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Total Requested150088%
Total Not Requested20012%
Premium Package Plus
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Auto-dimming headlights200No
Proximity key250Yes
Interior ambient lighting150Yes
LED headlights500No
Heated front seats200Yes
Steering-linked headlights150Yes
Headlight washers50Yes
Cornering lights50Yes
Power thigh support length adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support length adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Auto-dimming rearview mirror150Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Total Requested257577%
Total Not Requested77523%

Option Package Details
Porsche 911 Carrera S

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700No
Radar- or camera-based collision preparation system0No
Automatic braking, high-speed or partial200No
Forward collision warning200No
Total Requested00%
Total Not Requested1100100%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather1000Yes
Leather upholstery, extended coverage0No
Total Requested1000100%
Total Not Requested00%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Power thigh support length adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support length adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Total Requested150088%
Total Not Requested20012%
Premium Package Plus
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Auto-dimming headlights200No
Proximity key250Yes
Interior ambient lighting150Yes
LED headlights500No
Heated front seats200Yes
Steering-linked headlights150Yes
Headlight washers50Yes
Cornering lights50Yes
Power thigh support length adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support length adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Auto-dimming rearview mirror150Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Total Requested257577%
Total Not Requested77523%

Option Package Details
Porsche 911 Turbo

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700No
Radar- or camera-based collision preparation system0No
Automatic braking, high-speed or partial200No
Forward collision warning200No
Total Requested00%
Total Not Requested1100100%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Front sport buckets100Yes
Total Requested30060%
Total Not Requested20040%

Option Package Details
Porsche 911 Turbo S

Adaptive cruise control, all-speed
FeatureValueRequested?
Adaptive cruise control, all-speed700No
Radar- or camera-based collision preparation system0No
Automatic braking, high-speed or partial200No
Forward collision warning200No
Total Requested00%
Total Not Requested1100100%

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