 Top speed was 135 km/h (84 mph) or 145 km/h (90 mph), depending on the final drive ratio fitted.This was the first Mercedes-Benz to use an independent suspension setup, with a double wishbone front axle, double-joint swing axle at the rear, and separate wheel location, coil springs and damping.The W22 series had a four-speed manual gearbox with synchromesh on the top two ratios.