The Lancer Evolution series were homologated for the Group A class, and their competitiveness against World Rally Cars from other manufacturers was therefore limited. The WRC was formed from well-known and popular international rallies, most of which had previously been part of the European Rally Championship and/or the International Championship for Manufacturers, and the series was first contested in 1973. The World Rally Car is the current car specification in the series. It evolved from Group A cars which replaced the banned Group B supercars. World Rally Cars are built on production two-litre four-cylinder cars, but feature turbochargers, anti-lag systems, four-wheel-drive, sequential gearboxes, aerodynamic parts and other enhancements bringing the price of a WRC car to around US$1 million (€700,000).