The body of the SLK-Class is shaped by its rich racing heritage and its broad shoulders and athletic stance ignite immediate passion for the open road. The body rests on alloy wheels which feature five thin, tapered spokes with a luminous silver finish. Staggered in width, the rear wheels and high-performance tires are wider than the fronts, for greater acceleration grip without sacrificing crisp steering feedback. A retractable hardtop folds into the trunk with just a single push of a button. Aluminum trim on the console and doors adds to the modern style and performance feel. The thick, leather-wrapped steering wheel features a racing-inspired flat-bottom design. Plus, the steering wheel has buttons which allow you to control the audio interface and make calls via your Bluetooth enabled phone. The Cockpit Management and Data (COMAND) system features a high-resolution color-LCD display. This is utilized to manage audio, video, and other hands free calling and navigation functions. Direct-steer automatically varies the steering ratio based on how far you turn the steering wheel. The sport suspension allows for a sharper handling response and a more aggressive stance. Various engines are available per package level to suit your needs. Powerful 4-wheel disc brakes give you the stopping power you need. Driver and passenger knee air bags supplement the dual-stage front air bags. The NECK PRO head restraints protect you in the event of a rear impact exceeding a preset threshold. Finally, the Electronic Stability Program detects wheelspin, severe understeer, or oversteer. ESP can brake individual wheels and reduce engine power to help bring the vehicle under control.