Edmunds.com: New Mercedes-Benz SL-Class Convertible Outstanding in Every Respect

With a significant styling refresh, more power and a new transmission, the Mercedes-Benz SL-Class reaffirms its position at the top of the luxury roadster hierarchy, says Edmunds.com in a new review. Powering the 2017 Mercedes-Benz SL 450 is a turbocharged 3.0-liter V6 that produces 362 horsepower and 369 pound-feet of torque. A nine-speed automatic transmission…