Only about 65 Sunbeams of this type were built.
Initially launched for 1926 as the 30/90, it featured a straight eight engine of either 4825cc or 5028cc with a four speed gearbox and Claudel Hobson carburettor. These engines had 9 bearing crankshafts and dry sump lubrication. Semi-elliptic front suspension and cantilever rear suspension were again used. It was fitted with a mechanical brake servo.
For 1927, it became the 30 with 4828cc engine and 35 with 5447cc engine.
Both types were available in saloon and limousine body styles, and the 30 was available as a tourer.