10/20, 13/35 & Fifteen models – 1923 to 1930

10/20 – 1923 to 1926, 10.2 h.p. 1,393cc 4-cylinder side valve engine with 3-speed gearbox.
This is Triumph’s first motor car. Built to a high quality in low numbers. We have recorded 59 and two survive with their original style bodywork. 5 body styles were available; 2/3-Seater All-Weather Tourer – £395, ‘Sports’ – £305, Four-Door Weymann Saloon – £425, 4-Seater Tourer – £460 and Three-Door Weymann Tourer – £unknown.
13/35 – 1924 to 1926, 13.35 h.p. 1,873cc 4-cylinder side valve engine with 3-speed gearbox.
This is the first British car to have hydraulic brakes (all following Triumph models retained hydraulic brakes). It was a development of the 10/20 with wider track and longer wheelbase. We have only recorded one 13/35 model, suggesting that Triumph did not put the 13/35 into production. 2 body styles were available; 5-Seater Tourer – £unknown and 4-Door Saloon – £495.

Fifteen – 1926 to 1930, 14.9 h.p. 2,169cc 4-cylinder side valve engine with 3-speed gearbox.
Built to the same dimensions as the 13/35, but with a larger capacity engine, the Fifteen was the last of larger conventional cars built by Triumph, before they concentrated on small and then sportier cars. We have recorded 110 and three survive with their original style bodywork. 5 body styles were available; 2/3 Seater Tourer – £395, 4/5-Seater Tourer – £395, 2 x Coachbuilt Saloons – £495 and Fabric Saloon – £475.