By the late eighties, Hindustan had tied-up with Isuzu of Japan and started manufacturing their 1.8 L 4ZB1 petrol engine and matching five-speed gearbox for installation in the Contessa. The new car was called the Contessa Classic with distinctive "CLASSIC" and "1.8GL" badging on the trunk lid. The car was an instant success and set a new standard for refinement, power and luxury in the Indian market. The BMC-engined model was phased out in short order. The car achieved an increased top speed of around 160 km/h.