was launched in 1990 in two variants—a 55 bhp petrol-powered Deluxe version and a 37 bhp diesel-powered Diesel DX version. The Ambassador Nova received a newly designed steering wheel, new steering column, better brakes and electricals. The brake pedal was now top-hinged, while the earlier central instrumentation flanked by two glove compartments was replaced by a more conventional setup with a single glovebox. It also had some cosmetic changes which included a new radiator grille, while retaining the square turn signals of the earlier Mark IV. Ambassador 1800 ISZ, Classic In an attempt to increase its appeal, in 1992 another version became available. Dubbed the Ambassador 1800 ISZ, this model featured a 75 bhp 1817 cc Isuzu inline-four engine and a five-speed manual gearbox with a floor shift. This also had the benefit of allowing the option of bucket seats, as opposed to the earlier bench seats. Also, the entire dashboard was redesigned. Instrumentation panels were shifted from the centre of the dashboard to the right, behind the steering wheel. Seat belts became standard. The Isuzu 1817 cc engine that was used in its luxury model HM Contessa 1.8 GL that produced a power of 88 bhp was slightly detuned for the new Ambassador. The same power plant was available since 1985, for the special order armour plated, VIP models. By the early 1990s, this 1817 cc/ 75 bhp (at 5000 rpm), OHC, Isuzu engine, that had four in-line cylinders and a max torque of 13.8 Kgm at 3000 rpm, was available as an option, in all the Ambassadors commonly available for sale and this very reliable modern Japanese engine proved to be a success that would last its entire production run. This model gained the "Classic" moniker at the 1998 Delhi Motor Show, and Ambassador Classics have since been available with the gamut of 1.5 to 2.0-liter petrol, CNG, and diesel engines installed across the Ambassador lineup. The 1500 diesel engine, the main seller for Hindustan, did not pass Bharat IV emissions and as of 2011 it was no longer allowed to be sold in 13 of India's major cities. This meant the end of the Classic range, as it eliminated most of the taxi market. Final Generation Ambassador Grand The Ambassador Grand was launched in 2003 and as per the manufacturer, the new version had 137 changes compared to its predecessor. The changes included a switch to body