The World Rally Championship for Manufacturers (or WRC Manufacturers' Championship) is a title awarded by the FIA to the most successful manufacturer over a World Rally Championship season, as determined by a points system based on rally results. 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; the series was first contested in 1973. The first official rallying Manufacturers' Champion was Alpine-Renault. On seventeen occasions the Manufacturers' Champion team has not contained the World Drivers' Champion for a given season.