[6] The upgraded Mk II, introduced in October 1963, had Armstrong Selectaride electronically adjustable rear dampers and minor styling changes.

Changes on the Mk III, the final version of the series which was introduced in June 1965, included a minor reduction in overall length, deeper windscreen, equal size headlamps without chrome bezels, improved interior ventilation, wood-veneer dashboard, the addition of overriders to the bumpers, and a dual-circuit braking system.

The 1963 Sedanca was featured in an article by Paul Walton in the June 2008 issue of Ruoteclassiche, Italy's leading classic car magazine.

The fibreglass body, and the fact that the twin-tube frame was set in from the perimeter of the car, have contributed to the model's comparatively high survival rate.

It was used for development of the Jensen FF which was the first non-all-terrain production car equipped with four-wheel drive[9][10] A C-V8 Mk II was featured in the 1965 to 1966 ITC television series The Baron.

Famous owners of Jensen C-V8s include actor Sean Connery of James Bond fame who owned a MKII Reg AUW 70B, the pop star Susan Maughan, the guitarist Dave Hill from the glam-rock band Slade whose car carried the registration YOB 1 and Sir Greg Knight MP, the Chair of the All Party Parliamentary Historic Vehicles Group.