The Corona 1900S Sporty Sedanwas a concept car displayed at the 1963 Tokyo Motor Show. The 1897cc 3R engine from the Crown was fitted to a Corona RT20 sedan instead of the standard 1500 cc engine, increasing power to 80 PS (59 kW). It was not sold in Japan but in 1964 it was sold in the American market as the RT30L Tiara, replacing the identical looking 1500 cc RT20L.