Mercedes-Benz SL-Class vs. Porsche 911
In comparing the Mercedes-Benz SL-Class's and the Porsche 911's specifications and ratings, the Mercedes-Benz SL-Class has the advantage in the areas of reliability and interior volume. The Porsche 911 has the advantage in the areas of resale value, overall quality score and base engine power. Based on this comparison of the Mercedes-Benz SL-Class's and the Porsche 911's specifications and ratings, the Porsche 911 is a better car than the Mercedes-Benz SL-Class.
Mercedes-Benz SL-Class vs. Porsche 911 Resale/Retained Value
Looking at the 5-year depreciation rate for both models, the Mercedes-Benz SL-Class loses 47.2 percent of its value and the Porsche 911 loses 26.7 percent of its value. This means the Porsche 911 retains 20.5 percentage points more of its value and has the advantage of higher resale value versus the Mercedes-Benz SL-Class.
Mercedes-Benz SL-Class vs. Porsche 911 Quality Rating
The iSeeCars Overall Quality rating for the Mercedes-Benz SL-Class is 7.4 out of 10 while the Porsche 911's quality rating is 8.2 out of 10. This results in the Mercedes-Benz SL-Class being ranked 9 out of 26 Best Luxury Convertibles and the Porsche 911 being ranked 2 out of 26. Out of 40 Best Luxury Sports Cars, the Mercedes-Benz SL-Class is ranked 16 and the Porsche 911 is ranked 5.
Mercedes-Benz SL-Class vs. Porsche 911 Reliability Rating
iSeeCars’ Reliability Rating for the Mercedes-Benz SL-Class is 7.9 out of 10. For the Porsche 911 the reliability rating is 7.9 out of 10. This gives the Mercedes-Benz SL-Class a slight advantage in reliability compared to the Porsche 911.
Engine Power and Fuel Efficiency Comparison
For engine performance, the Mercedes-Benz SL-Class’s base engine makes 375 horsepower, and the Porsche 911 base engine makes 379 horsepower.
Passenger Space Comparison
While both models are sports cars, the Mercedes-Benz SL-Class has the advantage of offering more interior volume, reflected in more cargo space.
Pricing
New Asking Price:
-
Used Asking Price:
-
5-Year Depreciation (lower is better):
0.472461
Pricing
New Asking Price:
149826 - 286624
Used Asking Price:
169909 - 314169
5-Year Depreciation (lower is better):
0.26718
Mercedes-Benz SL-Class Scores & Rankings
Overall Score:
7.370637 / 10
Reliability:
7.941273 / 10
Retained Value:
6.8 / 10
Safety:
Not available
Porsche 911 Scores & Rankings
Overall Score:
8.193415 / 10
Reliability:
7.88683 / 10
Retained Value:
8.5 / 10
Safety:
Not available
Mercedes-Benz SL-Class Rankings
Ranking
1 out of / 40Ranking
1 out of / 26Ranking
7 out of / 40Ranking
7 out of / 26Ranking
7 out of / 26Ranking
8 out of / 19Ranking
9 out of / 26Ranking
12 out of / 23Ranking
14 out of / 40Ranking
14 out of / 18Ranking
16 out of / 40Ranking
18 out of / 26Ranking
20 out of / 30Ranking
31 out of / 40Porsche 911 Rankings
Ranking
1 out of / 26Ranking
2 out of / 40Ranking
2 out of / 26Ranking
2 out of / 26Ranking
2 out of / 26Ranking
2 out of / 19Ranking
4 out of / 40Ranking
5 out of / 40Ranking
5 out of / 23Ranking
6 out of / 40Ranking
8 out of / 26Ranking
9 out of / 40Ranking
15 out of / 18Ranking
23 out of / 30Available Body Styles
Convertible
Available Body Styles
Convertible, Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Mercedes-Benz SL-Class Trim Levels
AMG SL 43, AMG SL 55, AMG SL 63
Porsche 911 Trim Levels
Carrera, Carrera 4, Carrera 4 GTS, Carrera 4S, Carrera GTS, Carrera S, Targa 4, Targa 4 GTS, Targa 4S, Targa 50 Years Porsche Design, Turbo, Turbo S, Carrera T, Dakar, GT3, GT3 RS, GT3 Touring
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specifications
Horsepower:
375 hp @ 6750 rpm
Torque:
354 foot-lbs @ 3000 rpm
Power-to-Weight Ratio (higher is better):
Not yet available
Base Drivetrain Specifications
Horsepower:
379 hp @ 6500 rpm
Torque:
331 foot-lbs @ 1950 rpm
Power-to-Weight Ratio (higher is better):
0.108 hp per pound
Engine Specifications
Engine Size:
2 liters
Engine Configuration:
Inline
Number of Cylinders:
4
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
Not yet available
Range (city/hwy):
Not yet available
Recommended Fuel Type:
Not yet available
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
Not yet available
Range (city/hwy):
Not yet available
Recommended Fuel Type:
Not yet available
Standard/Optional Features
Android Auto:
Standard
Apple Car Play:
Standard
Cooled/Ventilated Seats:
Standard
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Wireless Smartphone Charging:
Standard
Adaptive Cruise Control:
Available
Heated Steering Wheel:
N/A
Sunroof/Moonroof:
N/A
Standard/Optional Features
Android Auto:
N/A
Apple Car Play:
N/A
Cooled/Ventilated Seats:
Available
Heated Seats
N/A
Keyless Entry:
N/A
Keyless Ignition:
N/A
Leather Upholstery:
Available
Navigation System:
N/A
Wireless Smartphone Charging:
N/A
Adaptive Cruise Control:
N/A
Heated Steering Wheel:
N/A
Sunroof/Moonroof:
N/A
Safety Equipment
360-Degree Camera:
Standard
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Pedestrian Detection:
Standard
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Safety Equipment
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
N/A
Pedestrian Detection:
N/A
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
Not yet available
Front Leg Room:
Not yet available
Front Shoulder Room:
Not yet available
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
7.5 cubic feet
Overall Interior Volume:
76.0 cubic feet
Interior Dimensions
Front Head Room:
Not yet available
Front Leg Room:
Not yet available
Front Shoulder Room:
Not yet available
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
4.6 cubic feet
Overall Interior Volume:
68.0 cubic feet
Exterior Dimensions
Curb Weight:
Not yet available
Width:
82.7 inches
Height:
53.5 inches
Length:
185.2 inches
Wheelbase:
106.3 inches
Ground Clearance:
Not yet available
Exterior Dimensions
Curb Weight:
3508 lbs
Width:
79.7 inches
Height:
51.1 inches
Length:
177.9 inches
Wheelbase:
96.5 inches
Ground Clearance:
4.6 inches
Standard Wheel/Tire Information
Wheel Size:
19.0 x 9.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/45R19
Standard Wheel/Tire Information
Wheel Size:
Not yet available
Wheel Type:
Not yet available
Tire Size:
Not yet available