Specifications

Dimensions


Key Features

The 2015 SLK55 AMG Roadster
MSRP $70,850*
Passenger capacity
2
Trunk capacity
10.1 cu ft (top up)
6.4 cu ft (top down)
Transmission type
7-speed AMG SPEEDSHIFT®
Engine
5.5L AMG V-8
Power
415 hp @ 6,800 rpm
Acceleration, 0-60 mph
4.5 sec
City fuel economy
19 mpg
Highway fuel economy
28 mpg

Interior Dimensions

FRONT

Headroom
38.0 in
Legroom
42.5 in
Shoulder room
52.2 in

CARGO AREA

Trunk capacity
10.1 cu ft (top up)
6.4 cu ft (top down)

More Exterior Dimensions

Overall length
163.2 in
Overall height
51.2 in (top up)
Overall width (with mirrors)
79.0 in

Wheelbase
95.7 in
Coefficient of drag
0.3
Curb weight
3,583 lbs

Specs

  • Engine, Drivetrain, and Performance

    Engine, Drivetrain, and Performance

    Engine
    Net power
    415 hp @ 6,800 rpm
    Net torque
    398 @ 4,500 rpm
    Compression ratio
    12.6:1
    Construction
    Diecast alloy block and alloy heads
    Fuel requirement
    Premium unleaded gasoline
    Fuel capacity
    18.5 gallons
    Fuel economy
    City fuel economy
    19 mpg
    Highway estimate
    28 mpg
    Emission certification
    ULEV of LEVII
    Drivetrain
    Automatic Transmission
    7-speed AMG SPEEDSHIFT®
    Drive configuration
    Rear-wheel drive
    Final-Drive ratio
    2.82:1
    Performance
    Acceleration, 0-60 mph
    4.5 sec
  • Chassis and Traction Control/Stability Systems

    Chassis and Traction Control/Stability Systems

    Chassis
    AMG Sport Suspension
    The 4-wheel multilink AMG Sport Suspension is precisely calibrated and extensively enhanced to sharpen its track reflexes while maintaining its composed comfort. Stiffer tuning of the springs, shock absorbers, bearings and stabilizer bars team up with increased negative camber at the rear axle, for quicker, flatter cornering.
    Steering type
    Rack-and-pinion with speed-sensing power assist and Direct-steer
    Turning circle
    34.5 ft, curb-to-curb
    Traction Control and Stability
    Electronic Stability Program (ESP)
    This safety breakthrough first introduced by Mercedes-Benz continually monitors your driving inputs and the vehicle's motion to help keep it going in your intended direction, especially in corners and during evasive maneuvers. If it detects wheelspin, severe understeer (plowing), or oversteer (fishtailing), ESP® can brake individual wheels and reduce engine power to help bring the vehicle under control.[*4]
  • Brakes, Wheels, and Tires

    Brakes, Wheels, and Tires

    Brakes
    Adaptive braking technology
    Adaptive braking technology integrates a suite of advances. If you lift off the accelerator quickly, Predictive Brake Priming sets the pads closer to the discs for more immediate response when you apply the brakes. In the rain, Automatic Brake Drying periodically applies the brakes just enough to sweep water build-up from the discs. During uphill starts, Hill-Start Assist helps prevent unwanted rollback. And a brake HOLD feature can make long red lights or stopped traffic a little easier.
    Antilock Braking System (ABS)
    ABS senses impending wheel lockup under heavy braking and pumps the front brakes individually or the rear brakes together. This intelligent system can pump the brakes as needed up to 30 times per second, to prevent lockup and preserve the driver's steering ability.
    Brake Assist (BAS®)
    Brake Assist senses emergency braking via the speed at which the driver presses the brake pedal and immediately applies maximum available power boost. Brake Assist can potentially reduce 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.[*5]
    Wheels/Tires
    Wheels
    18-inch AMG 5-spoke alloy (8.0x18 front, 9.0x18 rear)
    Tires
    235/40R18 front and 255/35R18 rear, high-performance
  • Safety and Security Systems

    Safety and Security Systems

    Safety Features
    ATTENTION ASSIST®
    The first system of its kind, ATTENTION ASSIST continuously monitors different parameters of driving behavior, and can automatically alert the driver with both visual and audible warnings if it detects signs of drowsiness on long trips.
    Mercedes-Benz mbrace
    From your car, your computer or your compatible smartphone, mbrace® offers the industry's most comprehensive range of features for more connected, safe and productive drive time. From making your everyday life easier to helping out in an emergency, mbrace combines advanced cloud-based and GPS technology with 24-hour support from helpful experts. The mbrace hardware is standard, and a trial period for each of the three mbrace Packages is included.
    Restraint Systems
    8-way air bag protection
    A suite of standard air bags offers advanced protection. Driver and passenger knee air bags supplement the dual-stage front air bags. Dual torso-level side-impact air bags are complemented by head-level air bags designed to offer protection even with the hardtop and side windows lowered.[*6]
    NECK-PRO head restraints
    In the case of a rear impact exceeding a preset threshold, NECK-PRO active head restraints move forward and slightly upward, reducing the distance between the head restraints and the heads of occupants. This action helps to reduce the possibility or severity of whiplash-type neck injuries.[*6]
    Seat belt technology
    Equipped with Emergency Tensioning Devices (ETDs) and belt force limiters, 3-point seat belts are arguably our most important passive safety feature. If a collision exceeds a preset threshold, the ETDs instantly remove slack from the seat belts. Belt force limiters allow a slight amount of give in the seat belts, to reduce the peak seat-belt forces on the occupant.[*6]
    Locking & Security
    SmartKey
    The SmartKey remote control integrates remote door locks and trunk opener, a removable valet key, and a remote panic alarm. You may selectively unlock only the driver's door and fuel filler, or both doors plus the trunk and fuel filler. You can close all open windows from outside the vehicle, simply by holding down the "lock" button on the SmartKey remote while aiming it at the infrared sensor in the driver's door handle.
    Locator lighting
    Locator lighting uses the car's lights to help illuminate a return path when the car is remote-unlocked in darkness. Unlocking the car also activates the illuminated entry system.
    Night security illumination
    The exterior lights can be programmed to turn on for a preset interval when you remote-lock your vehicle in darkness, to help light a path for you as you leave.
    Antitheft alarm with remote panic feature
    The standard antitheft alarm system is armed automatically when you lock your Mercedes from the outside. It sounds the horn and flashes the exterior lights if a door, the trunk or the hood is opened without first unlocking the vehicle. You can also sound the alarm by pressing the red "panic" button on your SmartKey remote when you're within range of your vehicle.