90 Mk II otrzymał większy silnik o pojemności 2267 cm³ z Humbera Hawk.
Sunbeam-Talbot 90 Mark II is powered by a larger engine than the Mark I (2267 cc v. 1944 cc) which give it a significantly better performance. Other modifications made to this popular marque are a stiffer chassis frame with coil-spring IFS, anti-sway bar at the front, transverse bar at the rear, hypoid bevel rear axle with higher gearing, and a new heating and ventilation system. The Mark II could be identified by the modified front end which include two small air-intakes next to the radiator grille, the new style bumpers and separate sidelamps. Sunbeam-Talbot 90 Mark II Drophead Coupé, which is approximately 60 lb lighter than the Saloon version, have wind-up windows not only in the doors but also in the rear quarters.