The engine was coupled by a single-disc dry clutch to a four-speed transmission, with gear ratios of 3.34:1, 1.97:1, 1.39:1, and 1:1, and a reverse of 2.73:1. The stock rear axle ratio at the beginning of the construction period was 1:3.42; From the 41st vehicle, it was changed to 1:3.64 to give better acceleration. It allows a top speed of and acceleration from 0 to 100 km/h (62 mph) in 9.3 seconds. Faster acceleration was provided with ratios of 1:3.89 and 1:4.11. The lowest final gear ratio, of 1:3.25, delivered a top speed of up to , making the 300 SL the fastest production car of its time.