Powered by a DOHC, water-cooled, four-cylinder inline engine with four Keihin carburetors, the engine capacity was increased to 606 cc from the S500's 531 cc. The engine produced 57 hp (43 kW) at 8,500 rpm and had a top speed of 90 mph (140 km/h). With the convertible weighing in at mere 1,576 lb (715 kg), the extra sheet metal of the coupe only added 33 lb (15 kg) to the overall weight. Suspension was independent with sealed roller chain drive to each rear wheel.[2]