The Mark IV featured a redesigned rear design similar to the Triumph Stag and Triumph 2000 models, both also designed by Michelotti. The front end was revised with a new bonnet pressing eliminating the weld lines on top of the wings/fenders, door handles were recessed, the convertible top received squared-off corners. The interior was revised to include a full-width dashboard, with instruments ahead of the driver rather than over the centre console, initially finished in black plastic and beginning in 1973 finished in wood.