The Omega 3000 was the sports version of the Omega A model range. It featured a straight-6, 3.0 litre, twelve valve engine, which produced . Other modifications from the base model included a lowered suspension and limited slip differential, as well as different fascias and a rear spoiler. The car had a top speed of , and accelerated from 0–100 km/h in 8.8 seconds. The catalyzed version of the engine originally only had . The uncatalyzed model was discontinued in August 1988. In countries where the Omega 3000 was sold as a Vauxhall, it was called the Carlton GSi 3000.