Research 2020 Mercedes-Benz SL-Class specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

SL 450 SL 450 Roadster


Brake Type 4-Wheel Disc
Brake ABS System 4-Wheel
Disc - Front (Yes or ) Yes
Drum - Rear (Yes or )
Rear Drum Diam x Width (in)
Disc - Rear (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 14.2
Rear Brake Rotor Diam x Thickness (in) 12.6

Cargo Area Dimensions

Trunk Volume (ft³) 8.5


Tons/yr of CO2 Emissions @ 15K mi/year 8.0


Engine Order Code
Engine Type Twin Turbo Premium Unleaded V-6
Displacement 3.0 L/183
SAE Net Horsepower @ RPM 362 @ 5500
Fuel System Gasoline Direct Injection
SAE Net Torque @ RPM 369 @ 2000

Exterior Dimensions

Height, Overall (in) 51.2
Min Ground Clearance (in) 3.7
Track Width, Rear (in) 63
Track Width, Front (in) 62.8
Width, Max w/o mirrors (in) 73.9
Length, Overall (in) 182.3
Wheelbase (in) 101.7

Fuel Tank

Fuel Tank Capacity, Approx (gal) 19.8

Interior Dimensions

Passenger Volume (ft³) 50.5
Front Head Room (in) 39.1
Front Hip Room (in) 53.6
Passenger Capacity 2
Front Leg Room (in) 42.9
Front Shoulder Room (in) 55.5


EPA Fuel Economy Est - Hwy (MPG) 28
EPA Fuel Economy Est - City (MPG) 20
Fuel Economy Est-Combined (MPG) 22


Turning Diameter - Curb to Curb (ft) 36.2
Steering Type Rack-Pinion


Vehicle Name Mercedes-Benz SL
Body Style Roadster


Suspension Type - Rear (Cont.) Multi-Link
Suspension Type - Front Multi-Link
Suspension Type - Rear Multi-Link
Suspension Type - Front (Cont.) Multi-Link


Front Tire Size P255/35YR19
Rear Tire Order Code R66
Spare Tire Order Code
Spare Tire Size
Rear Tire Size P285/30YR19
Front Tire Order Code R66


Eighth Gear Ratio (:1) 0.72
Second Gear Ratio (:1) 3.24
First Gear Ratio (:1) 5.35
Trans Description Cont. Again
Trans Description Cont. Automatic w/OD
Trans Type 9
Trans Order Code 421
Drivetrain Rear Wheel Drive
Seventh Gear Ratio (:1) 0.86
Final Drive Axle Ratio (:1) 3.07
Reverse Ratio (:1) 4.80
Sixth Gear Ratio (:1) 1.00
Fifth Gear Ratio (:1) 1.21
Fourth Gear Ratio (:1) 1.64
Third Gear Ratio (:1) 2.25


EPA Classification Two-Seaters

Weight Information

Base Curb Weight (lbs) 3826


Front Wheel Material Aluminum
Spare Wheel Size (in)
Rear Wheel Size (in) 19 X 9.5
Spare Wheel Material
Front Wheel Size (in) 19 X 8.5
Rear Wheel Material Aluminum