Compare 2020 Mercedes-Benz SL Class vs 2020 Porsche 911

2020 Mercedes-Benz SL Class
2020 Porsche 911
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Select style
SL 450 Roadster
Style MPG City MPG Hwy Invoice MSRP
SL SL 450 Roadster 20 28 $85,540 $91,000
SL SL 550 Roadster 17 25 $107,818 $114,700
Select style
Carrera 4 Convertible
Style MPG City MPG Hwy Invoice MSRP
911 Carrera 4 Convertible 18 24 N/A $117,500
911 Carrera 4 Coupe 18 24 N/A $104,700
911 Carrera 4S Convertible 18 23 N/A $133,400
911 Carrera 4S Coupe 18 23 N/A $120,600
911 Carrera Convertible 17 24 N/A $110,200
911 Carrera Coupe 18 24 N/A $97,400
911 Carrera S Convertible 18 23 N/A $126,100
911 Carrera S Coupe 18 24 N/A $113,300
Pricing
Invoice Price
$85,540
Coming Soon
Manufacturer Suggested Retail Price
$91,000
$117,500
Monthly Payment Estimate
$1517 / month
$1958 / month
The Car Connection's Take
TCC Rating
6.0
7.0
TCC’s Bottom Line
The 2020 Mercedes-Benz SL-Class may be the end of the line for the luxury roadster. The 2020 Porsche 911 improves upon the sports car icon’s incredible performance while adding needed safety and connectivity features.
TCC Likes
TCC Dislikes
Fuel Economy
City
20 mpg 18 mpg
Highway
28 mpg 24 mpg
Vehicle
EPA Classification
Two Seaters Minicompact Cars
Interior Dimensions
Passenger Volume (ft³)
50.5 -
Front Hip Room (in)
53.6 -
Front Head Room (in)
39.1 -
Passenger Capacity
2 4
Front Shoulder Room (in)
55.5 -
Front Leg Room (in)
42.9 -
Exterior Dimensions
Track Width, Front (in)
62.8 62.7
Min Ground Clearance (in)
3.7 -
Length, Overall (in)
182.3 177.9
Height, Overall (in)
51.2 51.1
Track Width, Rear (in)
63 61.2
Wheelbase (in)
101.7 96.5
Width, Max w/o mirrors (in)
73.9 72.9
Cargo Area Dimensions
Trunk Volume (ft³)
8.5 -
Brakes
Rear Brake Rotor Diam x Thickness (in)
12.6 13
Brake Type
4-Wheel Disc 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Front Brake Rotor Diam x Thickness (in)
14.2 13
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes
Fuel Tank
Fuel Tank Capacity, Approx (gal)
19.8 17.6
Steering
Turning Diameter - Curb to Curb (ft)
36.2 36.8
Steering Type
Rack-Pinion Rack-Pinion
Tires
Rear Tire Size
P285/30YR19 P295/35YR20
Rear Tire Order Code
R66 NA
Front Tire Size
P255/35YR19 P235/40YR19
Spare Tire Size
NA NA
Front Tire Order Code
R66 NA
Spare Tire Order Code
NA NA
Weight Information
Base Curb Weight (lbs)
3826 3614
Wheels
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
NA NA
Front Wheel Size (in)
19 X 8.5 19 X 8.5
Spare Wheel Size (in)
NA NA
Rear Wheel Material
Aluminum Aluminum
Rear Wheel Size (in)
19 X 9.5 20 X 11.5
Engine
SAE Net Torque @ RPM
369 @ 2000 331 @ 1950
Engine Order Code
NA NA
Displacement
3.0 L/183 3.0 L/182
SAE Net Horsepower @ RPM
362 @ 5500 379 @ 6500
Engine Type
Twin Turbo Premium Unleaded V-6 Twin Turbo Premium Unleaded H-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
Mileage
Fuel Economy Est-Combined (MPG)
22 20
EPA Fuel Economy Est - Hwy (MPG)
28 24
EPA Fuel Economy Est - City (MPG)
20 18
Transmission
First Gear Ratio (:1)
5.35 4.89
Eighth Gear Ratio (:1)
0.72 0.61
Final Drive Axle Ratio (:1)
3.07 3.39
Third Gear Ratio (:1)
2.25 2.15
Trans Type
9 8
Drivetrain
Rear Wheel Drive All Wheel Drive
Fifth Gear Ratio (:1)
1.21 1.18
Trans Description Cont. Again
NA NA
Seventh Gear Ratio (:1)
0.86 0.76
Reverse Ratio (:1)
4.80 3.96
Second Gear Ratio (:1)
3.24 3.17
Trans Order Code
421 G1G
Fourth Gear Ratio (:1)
1.64 1.56
Trans Description Cont.
Automatic w/OD Auto-Shift Manual w/OD
Sixth Gear Ratio (:1)
1.00 0.94
Summary
Vehicle Name
Mercedes-Benz SL Porsche 911
Body Style
Roadster Cabriolet
Suspension
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link
Suspension Type - Front
Multi-Link Strut
Suspension Type - Front (Cont.)
Multi-Link Strut
Suspension Type - Rear
Multi-Link Multi-Link
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.0 8.9

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