2012 Mercedes-Benz SL-Class vs. 2012 Porsche 911
When comparing the 2012 Mercedes-Benz SL-Class's and the 2012 Porsche 911's specifications and ratings, the 2012 Mercedes-Benz SL-Class has the advantage in the areas of typical lower range of pricing for used cars, reliability and base engine power. The 2012 Porsche 911 has the advantage in the areas of fuel efficiency, resale value, interior volume and overall quality score. Based on this comparison of the 2012 Mercedes-Benz SL-Class's and the 2012 Porsche 911's specifications and ratings, the 2012 Porsche 911 is a better car than the 2012 Mercedes-Benz SL-Class.
2012 Mercedes-Benz SL-Class vs. 2012 Porsche 911 Pricing
A used 2012 Mercedes-Benz SL-Class ranges from $18,061 to $55,988 while a used 2012 Porsche 911 is priced between $54,176 to $110,330.
2012 Mercedes-Benz SL-Class vs. 2012 Porsche 911 Resale/Retained Value
Looking at the 5-year depreciation rate for both models, the 2012 Mercedes-Benz SL-Class loses 47.2 percent of its value and the 2012 Porsche 911 loses 26.7 percent of its value. This means the 2012 Porsche 911 retains 20.5 percentage points more of its value and has the advantage of higher resale value versus the 2012 Mercedes-Benz SL-Class.
2012 Mercedes-Benz SL-Class vs. 2012 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.
2012 Mercedes-Benz SL-Class vs. 2012 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 2012 Mercedes-Benz SL-Class’s base engine makes 382 horsepower, and the 2012 Porsche 911 base engine makes 345 horsepower. The SL-Class is rated to deliver an average of 17 miles per gallon, with a highway range of 464 miles. The 911 is rated to deliver an average of 21 miles per gallon, with a highway range of 439 miles.This gives the 2012 Porsche 911 the advantage in fuel efficiency and the 2012 Mercedes-Benz SL-Class the advantage in maximum range. Both models use gasoline.
Passenger Space Comparison
While both models are sports cars, the 2012 Porsche 911 has the advantage of offering more interior volume, reflected in more front head room. The 2012 Mercedes-Benz SL-Class has the advantage in the areas of front shoulder room, front leg room and cargo space.
Pricing
New Asking Price:
-
Used Asking Price:
18061 - 55988
5-Year Depreciation (lower is better):
0.472461
Pricing
New Asking Price:
-
Used Asking Price:
54176 - 110330
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
2012 Mercedes-Benz SL-Class Trim Levels
SL 550, SL 63 AMG
2012 Porsche 911 Trim Levels
Black Edition, Carrera, Carrera 4, Carrera 4 GTS, Carrera 4S, Carrera GTS, Carrera S, Turbo, Turbo S, Targa 4, Targa 4S
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
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:
382 hp @ 6000 rpm
Torque:
391 foot-lbs @ 2800 rpm
Power-to-Weight Ratio (higher is better):
0.093 hp per pound
Base Drivetrain Specifications
Horsepower:
345 hp @ 6500 rpm
Torque:
288 foot-lbs @ 4400 rpm
Power-to-Weight Ratio (higher is better):
0.106 hp per pound
Engine Specifications
Engine Size:
5.5 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
14 / 22 / 17
Range (city/hwy):
295 / 464 miles
Recommended Fuel Type:
Gasoline
Engine Specifications
Engine Size:
3.6 liters
Engine Configuration:
Flat/Horizontally Opposed
Number of Cylinders:
6
Transmission:
Manual
Standard/Optional Drivetrain Type:
RWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
18 / 26 / 21
Range (city/hwy):
304 / 439 miles
Recommended Fuel Type:
Gasoline
Standard/Optional Features
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Adaptive Cruise Control:
Available
Heated Steering Wheel:
Available
Sunroof/Moonroof:
Available
Android Auto:
N/A
Apple Car Play:
N/A
Cooled/Ventilated Seats:
N/A
Wireless Smartphone Charging:
N/A
Standard/Optional Features
Heated Seats
Available
Keyless Entry:
Standard
Keyless Ignition:
N/A
Leather Upholstery:
Standard
Navigation System:
Available
Adaptive Cruise Control:
N/A
Heated Steering Wheel:
N/A
Sunroof/Moonroof:
N/A
Android Auto:
N/A
Apple Car Play:
N/A
Cooled/Ventilated Seats:
Available
Wireless Smartphone Charging:
N/A
Safety Equipment
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
N/A
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
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
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
37.7 inches
Front Leg Room:
42.9 inches
Front Shoulder Room:
54 inches
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
10.2 cubic feet
Overall Interior Volume:
57.8 cubic feet
Interior Dimensions
Front Head Room:
37.8 inches
Front Leg Room:
41.6 inches
Front Shoulder Room:
51.5 inches
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
4.8 cubic feet
Overall Interior Volume:
68.0 cubic feet
Exterior Dimensions
Curb Weight:
4098 lbs
Width:
81.5 inches
Height:
51.1 inches
Length:
180.4 inches
Wheelbase:
100.8 inches
Ground Clearance:
Not yet available
Exterior Dimensions
Curb Weight:
3263 lbs
Width:
71.2 inches
Height:
51.6 inches
Length:
175.6 inches
Wheelbase:
92.5 inches
Ground Clearance:
4.6 inches
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/40R18
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.0 inches
Wheel Type:
aluminum alloy
Tire Size:
235/40R18