The new Opel Astra OPC (Opel Performance Center) version Brand Opel The new Opel Astra GTC is being given a sharper edge: at the 2012 Geneva Motor Show, its high-performance OPC version (Opel Performance Center) has its world premiere. From spring 2012, the new car crowns Opel's racy compact coupé offer. ... By Car Division, 26 March, 2012