for Australian road conditions. Mitsubishi Motors codenamed these cars as "YF" and "YFW"—"W" for "wide". To emphasise the size advantage of the Mitsubishi over other medium cars, it was named Magna—deriving from the Latin word magnus, meaning "big". The only major aesthetic difference of the Magna relative to its Japanese donor was the wider body, as the general styling and side profile were similar also thanks to shared tooling for doors, guards and pillars. While still smaller and lighter than its then current RWD rivals, the Ford Falcon and Holden Commodore, the Magna trumped the latter for interior space due to the inherently superior packaging offered by the FWD layout. As the enlarging added minimal weight and the overall footprint remained smaller compared to rivals, the Magna could make do with a big-bore four-cylinder engine instead of the more traditional six-cylinder engines used by Holden and Ford. Even despite a , fuel efficiency was not significantly better. In particular, average fuel consumption was officially rated at in city driving and in highway driving. The widening approach proved successful for the Australian market, making the Magna a strong competitor against all original competitors envisaged by MMAL, being the Toyota Corona, Holden Camira, Nissan Bluebird, Ford Telstar, plus the larger Holden Commodore. The platform widening also helped influence Honda, Mazda, Nissan, and Toyota to do the same for their mid-size models in international markets, such as in the case of the "wide-bodied" Toyota Camry (XV10) of 1991. The engine of the Magna was the Australian-made 2.6-litre transversely-mounted inline-four cylinder engine. Codenamed 4G54 and marketed as Astron II, it was a development of the Astron engine (codenamed 4G52) fitted to Sigma. It initially produced at 5000 rpm and at 3000 rpm. Astron II was an eight-valve single overhead cam (SOHC) design with advanced features for the time, such as hydraulic mounts and "Silent Shaft" counterbalancing technology, designed and licensed to other automakers by Mitsubishi Motors to reduce the vibrations inherent in large four-cylinder engines. In the TM series, these engines were carbureted, with Mitsubishi's "ECI Multi" electronic fuel injection (EFI) version launched with the TN series, boosting power to . Magna was fitted with either a five-speed manual or a four-speed ELC automatic transmission with electronic control and overdrive (a button on the shift lever providing the ability to switch between the default three-speed mode or overdrive four-speed). The Executive and luxury Elite