The latest, and perhaps last, edition of the SL Roadster is available in two trim levels: SL 450 and SL 550. The base model comes equipped with a 3.0-liter turbocharged V6 that delivers 362 hp and 369 lb-ft to the rear wheels, mated to a nine-speed automatic transmission. The SL 550 gets a stronger 4.7-liter turbocharged V8 that develops 449 hp and 516 lb-ft. No other transmissions or drivetrains are offered.
The starter model is anything but basic, with leather upholstery, 16-way heated power seats with memory, Keyless-GO, hands-free access, and dual-zone climate control. The eight-inch Comand interface grants access to navigation, Bluetooth, Apple CarPlay, Android Auto, HD Radio, and SiriusXM, played back through a nine-speaker Harman Kardon sound system.
The upper trim gets heated and ventilated multi-contour seats with massage functions as well as Airscarf neck warmers for both seats and active parking assist. Other available features include Nappa leather upholstery, soft-close doors, and a 12-speaker Bang & Olufsen sound system.