The World Drivers' Championship is awarded to the most successful Formula One driver over a season, as determined by a points system based on Grand Prix results, and has been awarded since the first Formula One season in 1950. The World Constructors' Championship is awarded to the most successful Formula One constructor over a season, as determined by a points system based on Grand Prix results. The Constructors' Championship was first awarded in 1958. Different car make/engine combinations are considered to be different constructors for the purposes of the Championship. Constructors' Championship points are calculated by adding points scored in each race by any driver for that constructor. Up until 1979, most seasons saw only the highest-scoring driver in each race for each constructor contributing points towards the Championship. On only ten occasions has the World Constructors' Champion team not contained the World Drivers' Champion for that season.