The world premiere of the new SL and two all-new hybrid models took centre stage on the Mercedes-Benz stand at the opening of the 2012 North American International Auto Show in Detroit. 
For the first time, the all-new SL Roadster is made almost entirely from aluminium and weighs up to 140 kg less than its predecessor thanks to intelligent lightweight design. The result is more agility and dynamic character combined with improved comfort and increased crash safety. 
The new BlueDIRECT engines are more powerful, yet up to 29 percent more fuel efficient than the engines in the outgoing model
 “In 2011 we sold more than 1.36 million cars worldwide – more than ever before. 2012 will see us push forward with our product offensive and repeat two things that worked extremely well last year – we will launch another six new models and we will set the bar even higher by making green cars cooler and cool cars greener,” says Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars, at the NAIAS press conference. To back this up, Mercedes-Benz presented the sixth generation SL. Compared with its highly successful predecessor, the new model offers a considerable boost in sporting character and comfort and sets new benchmarks in the luxury roadster class. Plus, it comes with a full serving of everyday usability.
Classic proportions and outstanding aerodynamics
The stylish luxury sports car has classic proportions with a long hood and a compact cockpit set well back. Finely honed details and air vents with chromed fins from the dynamic tradition of Mercedes-Benz Design add visual emphasis to the SL legend.
Moreover, the new SL boasts outstanding aerodynamics. Alongside the lowest drag coefficient (cd = 0.27 in the SL 350), it also offers the lowest level of wind noise – almost on par with a closed saloon – as well as the very best airflow and noise characteristics with the top down.
“The new SL offers everything that defines an absolutely top-class premium roadster,” said Dr. Joachim Schmidt, Executive Vice President Mercedes-Benz Cars, Sales and Marketing. “It is two things rolled into one – a dynamic sports roadster and a luxurious coupé. Or, as we say, it is both athlete and connoisseur.”