Mercedes-benz-sl-class roadster
The sixth-generation Mercedes-Benz SL roadster scheduled to be unveiled next month at the Detroit auto show will have a new, all-aluminum body shell.

The 2013 SL that goes on sale next spring will weigh 275 pounds less than the current car because of the rigid new aluminum structure.

The SL550 will be powered by a new direct-injection V-8 engine and feature two new technologies:

• The Magic Vision Control windshield wiper and washer channels water to the windshield just in front of the wiper blade and eliminates splash. It also makes it less likely that washer fluid will fly into the passenger compartment when the roof is down. The wiper blade is heated.

• To improve sound from the audio system when the top is up or down, the FrontBass system uses free spaces in the car structure ahead of the foot wells as resonance chambers for the woofer speaker system. The result is better sound, while freeing up space in the doors and interior.

The 2013 SL is one of three redesigned or refreshed Mercedes models planned for 2012 introductions. The GL SUV will be redesigned and the GLK SUV will receive a midcycle refreshening next year.

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