2019 Mercedes-Benz SL 450 Roadster Specifications

Vehicle Type

Two-seat roadster with power-operated retractable hard top

Chassis

Aluminum unibody

Drive Configuration

Rear Wheel Drive

Exterior Dimensions (in)

Wheelbase

101.7

Length

182.3

Width (w/ mirrors)

82.6

Width (w/o mirrors)

76.7

Height

51.2

Track (front / rear)

62.8 / 63.0

Ground Clearance (max load)

3.7

Curb Weight (lbs)

3,825

Interior Dimensions (in)

Head room

39.1

Leg room

42.9

Shoulder room

55.5

Capacities (cu-ft)

Cabin Volume

50.5

Trunk Size (top up / down)

13.5 / 8.5

Suspension

Front

Independent multi-link suspension with coil spring, Single-tube shock absorber with continuously adjustable damping and
tubular torsion bar

Rear

Independent multi-link suspension with coil spring, Single-tube shock absorber with continuously adjustable damping and
tubular torsion bar

Steering

Type

Speed-dependent, electro-mechanical rack-and-pinion

Ratio

15.7 : 1

Turning Circle (ft)

36.2

Brake Disc Diameter / Thickness (in)

Front

13.5 / 1.4

Rear

12.6 / 0.94

Standard Wheels (in)

Front

8.5 x 19 (Cast)

Rear

9.5 x 19 (Cast)

Standard Tires

Front

255 / 40 R18

Rear

285 / 35 R18

Engine

Engine Type

3.0L V6 biturbo

Engine Material

Aluminum-Alloy

Valvetrain / Arrangement

DOHC, 4-valves per cylinder

Displacement (cc)

2,996

Bore (in / mm)

3.46 / 88.0

Stroke (in / mm)

3.23 / 82.1

Compression Ratio

10.5 : 1

Horsepower @ rpm

362 @ 5,500 – 6,000

Torque @ rpm

369 @ 1,800 – 4,500

Redline (rpm)

6,500

Transmission

Transmission Type

9G-TRONIC 9-speed automatic

Shift Controls

Wheel-mounted shift paddles

Gear Ratios:

1st

5.35 : 1

2nd

3.24 : 1

3rd

2.25 : 1

4th

1.64 : 1

5th

1.21 : 1

6th

1.00 : 1

7th

0.86 : 1

8th

0.72 : 1

9th

0.60 : 1

Reverse

4.80 : 1

Final Drive

3.07 : 1

Performance

0-60 mph (sec)

4.9

Top Speed (mph)

155 (electronically limited)

Fuel Economy

City / Highway / Combined (mpg)

20 / 28 / 23

Fuel Tank (gallons)

19.8

MSRP*

SL 450 Roadster

$89,150