[HOT NEWS] 2017 Mercedes-AMG S63 Cabriolet The weather outside can be frightful between the months of November and April at our Michigan headquarters, but at Car and Driver, testing cars is a year-round job. That means we sometimes end up in the incongruous position of reviewing cars like the 2017 Mercedes-AMG S63 cabriolet when the thermometer drops below freezing. Yet the middle sibling in Mercedes’ S-class cabriolet lineup is more capable of offering year-round enjoyment to those in wintry climes than you might expect.