On 15 August 1992, the Proton Saga Iswara was launched. It shares the older Mitsubishi platform used in the original Proton Saga, but its exterior and interior styling are unique to Proton. The Saga Iswara was widely used as taxicabs in Malaysia during the 1990s and 2000s, and many continue in service. On 21 May 1993 the Proton Wira was introduced, a car which was better equipped and larger than the Saga and Saga Iswara. The Wira is based on the fourth-generation 1991 Mitsubishi Lancer and was sold in a four-door saloon guise at launch. The Proton Wira Aeroback, a five-door hatchback variant featuring a Proton-designed rear-end joined the range in 1993. The Wira saloon and hatchback shared six different engines by 1996, all of which were sourced from Mitsubishi Motors. The engines included the 4G13 1.3L and 4G15 1.5L carried over from the Proton Saga, the newer 4G92 1.6L, 4G93 SOHC and DOHC 1.8L and the 4D68 2.0L diesel. The Wira was the first Proton car to be produced in right-hand drive (RHD) and left-hand drive (LHD) configurations, and remains the only Proton car made available with a diesel engine.