Specifications

Dimensions


Key Features

The 2014 SLK350 Roadster
MSRP $56,225*
Passenger capacity
2
Trunk capacity
10.1 cu ft (top up)/6.4 cu ft (top down)
Transmission type
7-speed automatic
Engine
3.5L V-6
Power
302 hp @ 6,500 rpm
Acceleration, 0-60 mph
5.4 sec
City fuel economy
21 mpg
Highway fuel economy
29 mpg

Interior Dimensions

Headroom
39.1 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
162.8 in
Overall height
51.2 in (top up)
Overall width
79.0 in (w mirrors)71.5 in (w/o mirrors)
Wheelbase
95.7 in
Coefficient of drag
0.30 cd 
Curb weight
3,417 lbs

Specs

  • Engine, Drivetrain, and Performance

    Engine, Drivetrain, and Performance

    Engine
    Net power
    302 hp @ 6,500 rpm
    Net torque
    273 @ 3,500-5,250 rpm
    Compression Ratio
    12.0 : 1
    Construction
    Diecast alloy block and alloy heads
    Fuel requirement
    Premium unleaded gasoline
    Fuel tank (capacity-reserve)
    18.5 gallons
    Fuel economy
    City fuel economy
    21 mpg
    Highway estimate
    29 mpg
    Emission certification
    Bin5/ULEVII
    Drivetrain
    Automatic Transmission
    7-speed automatic
    Drive configuration
    Rear-wheel drive
    Final-Drive ratio
    3.07:1
    Performance
    Acceleration, 0-60 mph
    5.4 seconds
  • Chassis and Traction Control/Stability Systems

    Chassis and Traction Control/Stability Systems

    Chassis
    Front suspension
    3-arm multilink
    Rear suspension
    5-arm multilink
    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 System (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
    Brakes
    Dual-circuit 4-wheel disc with single-piston sliding front and rear calipers
    Adaptive Brakes
    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.[*5]
    Brake Assist
    Brake Assist (BAS®) 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.
    Wheels/Tires
    Wheels
    18-inch 5-spoke alloy (7.5x18 front, 8.5x18 rear)
    Tires
    225/40R18 front and 245/35R18 rear, high-performance
  • Safety and Security Systems

    Safety and Security Systems

    Restraint Systems
    8-way air bag protection
    The SLK's sophisticated restraint system includes front air bags with dual deployment thresholds, as well as new head air bags, plus thorax side-impact air bags and knee bags for both driver and passenger.[*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.
    Emergency Tensioning Devices (ETDs)
    If a collision exceeds a preset threshold, the ETDs instantly remove slack from the seat belts.[*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.
    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.