Approximately 315 Three-Litre were made.
In 1930, the Sixteen suspension was changed to semi-elliptics all the way round. Around 3,495 examples of the 1926-1930 type were made.
Production of the 1926-30 the Twenty type ran to around 2560 units. In 1930, the 20 was revised with a new 3317cc OHV six (rating 23.8 hp), Zenith carburettor and a slightly larger chassis. Other revisions included vacuum servo brakes and a silent third gearbox.
In 1930, for Twenty-Five a vacuum brake servo was added and Stromberg carburettor fitted.
Sunbeam made one final attempt on the Land Speed Record in 1930 with The Silver Bullet, built for Kaye Don. Despite it dramatic appearance and supercharged twin V12s totalling 48000cc, it was a disaster and achieved nothing.
W ubiegłym roku Henry Segrave na dwusilnikowym Sunbeamie Golden Arrow pobił światowy rekord prędkości, osiągając 372,5 km/h.