Asides from having assumed a new form due to the innovative unibody construction, Pontons were also upgraded thanks to a large number of engine and suspension tweaks.
The previously popular independent suspension, comprising front coil springs and rear de Dion axle, introduced on the second Grosser series, was replaced with a contemporary front double wishbone with coil springs mated to a stabilizer bar setup and a rear swing axle with radius arms and coil springs ensemble. Among other technical aspects, steering was controlled through a recirculating ball system while braking was made through a power assist circuit connected to all-wheel drum brakes.