The car was powered by one of three four cylinder engines of 1.6, 2.0 and 2.6 litres, producing respectively 81, 95 and 103 bhp.
The largest of these power units produced a maximum torque of 192 Nm., and was one of the largest post-war four cylinder engines produced.
Although the Sigma was merely an Australian version of Mitsubishi Motors'Colt Galant[3] which was already available in the UK, the company's plan was to circumvent the "gentlemen's agreement", a voluntary import quota which limited Japanese-manufactured imports to 11 per cent of the market (which typically amounted to fewer than 200,000 cars per year). However, the idea proved unsuccessful and most of the cars imported by Lonsdale remained unsold by the time the company ceased trading. The Colt Car Company continued to sell the vehicle in the UK for 1984, although rebranded as the Mitsubishi Galant.[4]
