Being at the core of Opel’s design philosophy, sculptural design with a clear sense of precision also plays a major part in the interior design. Instrument panel and center stack are clearly structured and horizontally aligned to the driver. As the driver control center, the cockpit enhances the active driving feeling. An extensive engine portfolio ranging from gasoline to diesel and LPG that can be mated to manual and automatic transmissions is available to ensure good driving performance.
Opel was marketed in Malaysia beginning from the 1970s, and early models exported were Kadett, Gemini, and Manta. Opel had moderate sales from the 1980s until the early 2000s, when Malaysian car buyers favoured Japanese and Korean brand cars such as Toyota, Honda, Hyundai (Inokom) and Kia (Naza), which offered more competitive prices. Sales of Opel cars in Malaysia were dropped then, as Opel's prices were slightly higher than the same-segment Japanese, Korean, and local Proton and Perodua cars, and they were hard to maintain, had bad aftersales services, and spare parts were not readily available.
Another unique aspect to Opel nomenclature is its use of the "Caravan" (originally styled as 'Car-A-Van') name to denote its station wagon body configuration, (similar to Volkswagen's Variant or Audi's Avant designations), a practice the company observed for many decades, which finally ceased with the 2008 Insignia and 2009 Astra, where the name "Sports Tourer" is now used for the estate/station wagon versions.
The GSi's engine mapping had been carried out by Opel tuning specialists Irmscher. A model with the 82 PS (60 kW) 1.4 L multi point fuel injected engine, which was otherwise mechanically identical to the GSi, also became available as the Nova SRi in the United Kingdom. In January 1988, a turbocharged version of the Isuzu diesel engine was introduced, with power increased to 67 PS (49 kW).