The NA series was released to Australia during January 1983 in short- (SWB) and long-wheelbase (LWB) three-door wagon formats, with the 2.6-litre petrol or 2.3-litre turbo diesel, both mated to a five-speed KM145 manual transmission. Brakes were ventilated front discs and rear drums. The five-door, high-roof LWB model was introduced in May 1984 with the same powertrain options. The five-door offered a luxury Superwagon trim and also had a shorter final drive than the SWB models, to make up for the increased weight.
The NB of November 1984 included a revised grille, deleted the LWB three-door body style and the diesel engine for the remaining SWB three-door. Mitsubishi Australia released the NC series in November 1985, introducing optional power steering, while the long-wheelbase five-door switched to a low-roofed design.
A KM148 automatic gearbox became optional on the petrol Superwagon for the October 1986 ND update, while the 2.5-litre turbo diesel replaced the old 2.3-litre unit. For the October 1987 NE series, the Japanese 2.6-litre petrol was replaced with the Australian-made Astron II version. Brake dimensions were also increased across the range.
The NE three-door Sports and five-door Superwagon added a limited slip differential, front bumper overriders, spare wheel cover, side pin striping, 16-inch chrome wheels, and optional two-tone paint over the base cars. The most expensive models also received an inclinometer, volt meter, oil pressure gauge, stereo cassette player, remote fuel filler release, suspension driver's seat, carpeting, and tweed and velour cloth trim (over tweed cloth and vinyl).
September 1988's NF facelift saw the introduction of a 3.0-litre V6 engine in the top-line Superwagon, delivering 105 kW (143 PS; 141 hp) and 228 N⋅m (168 lb⋅ft) via a five-speed V5MT1 manual or four-speed KM148 automatic. Suspension became a three-link coil spring design at the rear. Rear disc brakes were fitted to the V6 only.
The final NG refresh from September 1989 to April 1991 was a minor trim and equipment readjustment. The KM148 automatic transmission was replaced by the V4AW2 with lockup. High-end NG models (i.e. not the base Commercial trim) now received chrome, truck-style side mirrors. An intercooler was also added to the 2.5-litre turbo diesel models in 1990.