2005 Mercedes-Benz SLK55 AMG Roadster Offering an intoxicating roadster experience, the SLK55 AMG sets the standard in its class for power, style, innovation and safety, a road-ripping sports car with a monster 360-horsepower 5.4-liter V8 engine that blasts the car from a standstill to 60 mph in about 4.8 seconds.

Engine and Drivetrain AMG Built 5.5L SOHC 24-valve 90° V-8. High-pressure die-cast alloy cylinder block. Reinforced crankshaft and valvetrain. Alloy heads. Lightweight camshafts. Reinforced engine block, oil pan structure, pistons, connecting rods and crankshaft.

Net power 355 hp @ 5,750 rpm
Net torque 376 lb-ft @ 3,500 rpm
Compression ratio 11.0:1

Integrated sequential multipoint fuel injection and phased twin-spark ignition includes individual cylinder control of fuel spray, spark timing and phase, and antiknock. Electronic throttle. Two high-energy ignition coils and two spark plugs per cylinder. 100,000-mile spark plug intervals. Intake system Magnesium 2-stage resonance intake manifold increases intake runner length at lower rpm for improved response.

Transmission Standard AMG enhanced 7-speed automatic. Electronically controlled shifting. 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 second Reverse gear, and upshifts at lower rpm, to help improve control on slippery surfaces.

AMG SpeedShift™ programming provides up to 35% faster gear changes, automatically downshifts during braking, prevents unwanted upshifting while cornering, offers one-touch selection of the best gear for maximum acceleration (Shift into Optimum Gear), and features torque converter lockup in all forward gears. Fingertip manual mode allows direct-access shifting through forward gears via buttons on back of upper steering-wheel spokes (left button downshifts, right button upshifts) or via Touch Shift feature of shift lever, and will automatically intervene only to induce an upshift at redline, to downshift as needed upon full throttle, and to select 1st gear when the vehicle stops. In Standard and Comfort modes, the steering-wheel buttons operate the Touch Shift feature.

Rear-wheel drive. drive configuration  Rear axle ratio 3.06:1


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.

Performance Acceleration1 0-60 mph in 4.9 seconds.

Chassis Front Suspension Independent 3-link with antidive geometry with lowered ride height. Stabilizer bar. Rear Suspension Independent 5-arm multilink with lowered ride height, and geometry for antisquat and alignment control. Stabilizer bar.
Sport suspension Standard AMG sport suspension with AMG-calibrated coil springs and shock absorbers. Steering type Rack-and-pinion with integrated hydraulic damper


Wheels, Tires & Brakes Wheels Standard aluminum-alloy polished AMG multispoke design. 7.5J x 18 front, 8.5J x 18 rear. Tires Steel-belted radial 225/40 ZR18 front, 245/35 ZR18 rear, high-performance. AMG 18" wheels and accompanying high-speed-rated tires provide substantially increased treadwear and reduced ride comfort compared to H-rated tires. Serious wheel and tire damage may occur if the vehicle is operated on rough or damaged road surfaces or upon encountering road debris or obstacles.

Brakes Dual-circuit power-assisted 4-wheel disc brakes. 13.4" perforated and ventilated front discs with AMG 6-piston fixed-type callipers. 13.0" ventillated rear discs with AMG 4-piston fixed type callipers. Antilock Braking System (ABS) senses impending wheel lockup under heavy braking and pumps the front brakes individually or the rear brakes together (to help maintain stability) as needed up to 30 times per second, to prevent lockup and maintain steering ability. Brake Assist Brake Assist senses emergency braking via the speed at which the driver presses the brake pedal and immediately applies maximum available power boost, potentially reducing the overall stopping distance by eliminating the delay caused by a common human tendency not to brake hard enough, soon enough. Letting up on the brake pedal releases Brake Assist. Braking effectiveness also depends on proper brake system maintenance, and tire and road conditions.

Exterior Features Formula One-style grille with black crossfins. AMG-design Formula One-style front air dam with mesh air intakes, side skirts and rear apron. Color-keyed AMG-design rear lip spoiler Electrohydraulic retractable steel hardtop. A single button lowers or raises hardtop and all four side windows. Rear window pivots 180° while top folds. Trunk lid opens at front for top retraction and at rear for cargo-area access. AMG Dual-twin exhaust system with polished stainless-steel finishers. Dual automatically heated power mirrors. Auto-dimming left-side mirror. Parking-assist right-side mirror can tilt down upon shifting to Reverse. Electrically heated rear window with auto-shutoff based on time, driving speed and outside temperature. Dual aero-blade windshield wipers. Heated windshield washer nozzles. Variable-focus halogen headlamps with projector low beams and clear high-impact polycarbonate lenses. Halogen front foglamps, in front apron. Single red rear foglamp, integrated in left taillamp cluster. Driver-selectable light-sensing headlamps can be set to automatically illuminate at nightfall, and when entering dark tunnels or parking garages. Driver-programmable Daytime Running Lamps. Smoked rear lamps with dual-intensity LED brake and taillamps. Automatic lamp substitution uses a nearby lamp if a critical bulb fails. Touch Turn Signals flash three times with one touch of turn-signal lever, for lane-changing. Auxiliary LED turn signals in side mirror housings.
 
Locking & Security SmartKey uses an electronic code to unlock steering column and ignition. Removing SmartKey from ignition disables engine computer. SmartKey remote control integrates door lock/unlock buttons, trunk opener, removable valet key, and panic alarm. Driver may selectively unlock only the driver's door and fuel filler, or both doors plus the trunk and fuel filler. SmartKey remote locking uses redundant infrared and radio-frequency signals for improved range, and rolling-code signal for protection from cloning. SmartKey infrared-remote opening/closing of windows. operation of retractable hardtop. Driver-programmable user-recognition feature links each SmartKey to driver's preferences for driver's seat memory settings1 (all three presets), various climate control settings, and programmable vehicle preferences. Driver-programmable driveaway locking can automatically lock the doors when the car reaches 9 mph. Night security illumination uses the car's exterior lights to help illuminate a path after parking. Driver-programmable intervals of up to 60 seconds. Locator lighting can help light a return path when the car is remote-unlocked in darkness. Unlocking car activates illuminated entry system. Automatic antitheft alarm system with remote panic feature. Emergency trunk release, located inside trunk and illuminated for 60 minutes after trunk lid is closed. Tele Aid GPS-based Stolen Vehicle Recovery allows law enforcement agencies to track and recover stolen vehicle. Tele Aid Remote Door Unlock allows owner to have doors automatically unlocked in the event the SmartKey becomes locked inside vehicle. Tele Aid Automatic Alarm Notification alerts Mercedes-Benz to contact vehicle owner if antitheft alarm sounds.

Interior Features
Dual-zone CFC-free automatic climate control with dual rotary temperature controls, automatic control of blower speed and airflow distribution (with manual override). Dash-top diffuser vent. Rear-cabin air vents at rear of front console. Electrostatic dust and pollen filter. Tunnel mode offers one-touch closing of all windows and cabin air intake by holding the air-recirculation button. REST mode can ventilate cabin or help keep cabin warmer using residual heat for up to 30 minutes after car is turned off. Multifunction steering wheel provides convenient, additional controls for basic functions of audio system and optional phone, plus operation of multifunction display. Fingertip shift buttons behind steering-wheel spokes. Power front side windows, with one-touch express-up/down. One-button lowering or raising of all four windows via power top switch. Fine-mesh wind deflector attaches to roll bars. 4-way power steering column, position linked to driver's seat memory, with driver-programmable easy-exit feature. Electronic cruise control. Delayed-shutoff courtesy lamps. Dual front reading lamps. Automatic ambient interior lighting of console and footwells. Entrance lamps in both doors. Illuminated console storage area. Illuminated vanity mirrors. Auto-dimming rearview mirror. Enclosed storage in console and on rear cabin wall. Illuminated glovebox. Pockets in both doors. Parcel net in right front footwell. Retractable dual cupholder. Illuminated, carpeted trunk. Movable rigid cover allows increased storage capacity when hardtop is up.
 
Seating & Trim 8-way power sport seats, each with 3-position memory. Driver's seat memory includes steering column and outside mirror positions. AMG-design sport seats with Silver-painted magnesium trim. Heated seats. AMG-design two-tone Nappa leather upholstery. AMG-design leather-trimmed 3-spoke sport steering wheel and shift knob. AMG-design aluminum trim on dash and console with Silver trim on doors. Rubber-studded brushed aluminum pedals. Stainless-steel door sill trim.

Audio , Navigation and Communication. AM/FM stereo/weatherband radio with 9 speakers and in-dash single-CD player. In-dash audio system operating panel integrates controls and displays for the radio, CD player, optional glovebox-mounted 6-disc CD changer and optional portable digital telephone. Fiber-optic network offers precise, high-speed communication among components. Factory preparation for optional CD changer and cellular phone, and SIRIUS Satellite Radio 1 prewiring, using fiber-optic network. Tele Aid system uses GPS satellites plus a cellular link to provide 24-hour live assistance for emergency aid (SOS button), information (i-button) or Roadside Assistance (wrench button). Tele Aid basic services include Automatic Collision Notification (engages SOS function if an air bag or ETD deploys), Stolen Vehicle Tracking, Remote Door Unlock service and Dealer Connect.
 
Restraint Systems Integrated Restraint System Driver and passenger are each provided with a front air bag, knee air bag, side-impact head/thorax air bag, and 3-point seat belt with Emergency Tensioning Device (ETD) and belt force limiter.Adaptive dual-stage front air bags are deployed in response to frontal impact severity exceeding a preset threshold. ETDs are deployed in a front or rear impact exceeding a preset threshold of severity, or certain rollovers. An ETD will not deploy if seat belt is unfastened. Automatic Collision Notification engages Tele Aid SOS function if an air bag or ETD deploys.Front seat belts include lower points attached to seat frames. Dual height adjustable head restraints. Dual heat-treated micro-alloy steel roll bars.4

Instrumentation Electronic analog speedometer, tachometer, fuel gauge and quartz clock, all with black faces and white markings. Silver instrument tubes. AMG-design gauges with 200-mph speedometer,2 tachometer, fuel gauge and quartz clock, all with black faces and white markings. Black instrument tubes. Digital display for odometer and Touch Shift gear/mode selection. Multifunction display in instrument cluster can be scrolled via steeringwheel controls to operate and display various menus and vehicle features: Resettable trip meter and outside temperature indicator. Digital speed, coolant temperature, Maintenance System, and engine oil-level check. Radio station, CD player, CD changer1. Navigation system route guidance1. Vehicle reminder and malfunction messages. Driver-programmable settings for instrument cluster, lighting, vehicle and convenience features. Trip computer (elapsed time, fuel consumption,distance to empty). Mobile phone book. 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. System also monitors brake-pad wear. Audible reminders and messages for open door; exterior lamp failure; low fuel, engine oil, coolant and washer fluid; and to release parking brake, switch off headlamps and remove ignition key.