“We are working on a next generation of the SL,” Zetsche said. “The plan is to make a real wow car, a stunning car.” What he refused to comment on was a planned launch date, so it’s fair to assume it is a few years out. But what we are especially pleased to hear from Zetsche is the acknowledgement that a conservative SL, like the current car, is not in its best interest, sales wise. Bold styling choices are needed. “Whenever we accomplished that (bold styling) in the past, the SL has had a very good performance in the marketplace and that’s where we want to go,” the CEO added. On sale since 2013 and given a facelift last year, the SL is offered with a range of powerful engines, starting with the 3.0-liter bi-turbo V6 with 362 hp and going up to the 621-hp V12.