Mercedes-Benz SL550

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Engine

5,461-cc DOHC 32-valve V-8. Die-cast aluminum alloy cylinder block. Aluminum alloy heads

Net power 382 hp @ 6,000 rpm
Net torque 391 lb-ft @ 2,800 - 4,800 rpm
Compression ratio 10.7:1
Fuel requirement Premium unleaded gasoline, 91 pump octane.

Fuel and ignition system

Sequential fuel injection and ignition. Four valves per cylinder with continuously variable intake and exhaust valve timing.

Transmission

Driver-adaptive electronic 7-speed automatic. Driver-adaptive programming adjusts shift points to the driver's current driving style. Touch Shift allows driver to manually downshift and allow upshifts by nudging the shift lever left or right from the Drive position. Shift into Optimum Gear programming allows one-touch selection of the best gear for maximum acceleration or engine braking by holding the shift lever to the left of Drive for one second. Driver-selectable Comfort mode starts vehicle moving in 2nd gear or a 2nd Reverse gear, and upshifts at lower rpm, to help improve control on slippery surfaces.

Drive configuration Rear-wheel drive.

Rear axle ratio 2.65:1

Traction Control & Stability Systems

Electronic Stability Program (ESP®) ESP compares the driver's intended course, via steering and braking inputs, to the vehicle's response, via lateral acceleration, rotation (yaw), and individual wheel speeds. ESP then brakes individual front or rear wheels and/or reduces excess engine power as needed to help correct understeer (plowing) or oversteer (fishtailing). ESP also integrates all-speed traction control, which senses drive-wheel slip under acceleration and individually brakes the slipping wheel or wheels, and/or reduces excess engine power, until control is regained.1 View the interactive Feature Spotlight

Performance

Acceleration1 0 — 60 mph in 5.3 seconds.
Fuel economy
- EPA estimate2 14 mpg
- Highway estimate3 21 mpg
Emission certification bin 5 (ULEV of LEV II)

Exterior Dimensions

Wheelbase 100.8 in
Overall length 178.5 in
Overall height 51.0 in (top up)
Overall width 80.0 in (including mirrors)
Front track TBARear track TBA
Coefficient of drag 0.29 cd (top up)
Curb weight 4,220 lb

Interior Dimensions

Headroom 37.7 in (top up)
Legroom 42.9 inShoulder room 54.0 in
Trunk capacity 10.2 cu ft (top up), 7.2 cu ft (top down)
Cabin capacity 57.8 cu ft (interior volume plus trunk space)

Exterior Features

Dual chrome exhaust tips.
Electrohydraulic retractable aluminum hardtop, operated via console control or SmartKey remote. Rear window pivots 180° while top folds for more space-efficient stowage of folded top in trunk.
Easy-Pack system tilts up folded roof at the touch of a button for easier access to trunk.
Removable trunk separator for increased trunk space (over 0.74 cu ft).1
Attachable fine-mesh wind deflector (fastens to roll bar).
Dual heated power mirrors linked to driver's seat memory.
Auto-dimming left-side mirror.
Electrically heated rear window with auto-shutoff based on time, driving speed, and outside temperature.
Heated washer nozzles. Heated wiper parking position.
Rain-sensing variable intermittent wipers measure rainfall on windshield and adjust wiper speed and frequency accordingly.
Halogen front foglamps. Single red rear foglamp integrated within left taillamp cluster.
Driver-selectable light-sensing headlamps can be set via the Auto position of the headlamp switch to automatically illuminate in darkness.
Programmable daytime running lamps with auto-on override in darkness.
Dual-intensity LED brakelamps and taillamps.

Interior Features

Multifunction steering wheel provides convenient additional controls for basic audio and phone1 functions, as well as operation of the multifunction display.
Power windows with one-touch express-up/down for front windows and one-touch express-down for rear windows, via front window controls. Auto-dimming rearview mirror.
4-way (tilt/telescoping) power steering column position-linked to driver's seat memory.
Programmable easy-exit feature moves driver's seat back and/or raises steering column.
Electronic cruise control.
Shelf behind seats with retractable luggage straps.
Dual enclosed storage compartments beneath luggage shelf.
Locking the car from outside automatically locks all of these compartments for added convenience when parking with the top down.
Dual-zone climate control with individual driver and passenger controls for temperature and airflow direction, with dual automatic modes.
Climate control compensates for driving speed, window and hardtop positions, and ambient temperature.
REST mode can ventilate the cabin or help keep the cabin warmer using residual heat for up to 30 minutes after the car has been turned off.
Electrostatic dust and pollen filter. Integrated activated charcoal filter with smog-sensing automatic recirculation of filtered cabin air. Sun sensor helps compensate for the effects of direct sunlight on the occupants.
Humidity/dewpoint sensor reduces window fogging during humid weather and helps prevent overdrying of cooled air.
Tunnel mode offers one-touch closing (and reopening) of all windows and cabin air intake by pressing and holding the air-recirculation button.
Seat-belt usage sensors allow climate control system to focus first on occupied seats.

Instrumentation

Electronic analog speedometer, tachometer, and gauges for fuel level and coolant temperature. .
Automatic illumination of displays and controls based on ambient lighting.
Dual multifunction displays in speedometer and tachometer faces indicate Touch Shift gear selection and Shift mode, and can be scrolled via steering-wheel controls to operate and display various menus and vehicle features: odometer and resettable trip meter; outside temperature indicator; Maintenance System (see below), engine oil-level check, and digital speedometer; radio station, 6-disc CD changer, iPod playlist/track (with accessory iPod Integration Kit), and SIRIUS Satellite Radio; DVD-based navigation system route guidance; Distronic adaptive cruise control settings;1 vehicle reminder and malfunction messages; driver-programmable settings for instrument cluster, lighting, and vehicle and convenience features; trip computer (elapsed time, fuel consumption, and distance to empty); and mobile phonebook.
Mercedes-Benz Maintenance System displays distance remaining to next basic maintenance service, indicates type of service due, and provides automatic reminder feature when service interval draws near.
Tire-pressure monitoring system alerts driver to a loss of tire pressure via the multifunction display and can illuminate a warning lamp.

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