The 2015 AMG GT SLS Final Edition Convertible, 1 of only 350. The SLS’s naturally aspirated 6.2-liter M159 V-8 makes 583 horsepower at 6800 rpm and produces 479 lb-ft of torque at 4750. That thunderous output is transmitted to the rear wheels through a seven-speed dual-clutch automatic. The power level is entirely on par with the SLS GT; speculation that the Final Edition would get a dollop of extra horsepower was unfounded. In testing, the SLS GT roadster stormed from rest to 60 mph in 3.7 seconds (the coupe did it in 3.8). An estimated top speed at 197 mph.
