SMZ S-3A is a two-seater four-wheeled motorized carriage, mass-produced by the Serpukhov Motorcycle Plant from 1958 to 1970 (since 1962, a modernized version of the S-3AM was produced). The car used a motorcycle engine Izh-49 with a power of 8 hp. S-3A replaced the S-3L three-wheeled motorized carriage on the assembly line, on the basis of which it was developed.