The World Rally Championship Manufacturers' Championship (WMC) is awarded by the FIA to the most successful WRC constructor over a season, as determined by a point 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.[1] The first official rallying Constructors' Champion was Alpine-Renault. On seventeen occasions has the World Constructors' Champion team not contained the World Drivers' Champion for a given season.
In the 45 seasons the Championship has been awarded, only 13 different constructors have won it; Lancia being the most successful, with 10 titles including 6 consecutive from 1987 to 1992. Only seven countries have produced winning constructors: France (3), Japan (3), Italy (2), the United Kingdom (2), Germany (2), United States (1) and South Korea (1).
Key
Podiums
The number of times the champion finished in the top three in a rally
Margin
The margin of points by which the champion defeated the runner-up(s)