It was also used in the 1976 British Grand Prix, but was not qualified. In fact, only one race pre-2014 featured a number 13 car starting in Formula One history: the 1963 Mexican Grand Prix. The number 13 was not used, as per racing tradition. These permanent numbers lead to a few quirks, namely Tyrrell holding onto numbers 3 and 4 for all 21 years, and the numbers 27 and 28 becoming iconic Ferrari numbers. These permanent numbers lasted until 1995, in part due to a lack of teams. 1 holder, or when teams left F1 and left gaps in the numbers. Teams only changed numbers when the Drivers' Champion was not driving for the previous No. Since the 1973 World Champion, Jackie Stewart, left F1 at the end of that season, the team leader for the constructors champion ( Ronnie Peterson) drove the No.

But midway through that year, permanent numbers were trialled, and in 1974, permanent numbers were issued based on the Constructors' Championship positions in 1973. Up to 1973, the numbers were given out by the race organisers. Until 2013, the numbers were allocated with two rules: the previous season's World Champion used the number 1 following the Champion and his team-mate (car number 2), the teams were ordered by their position in the previous season's Constructors' Championship. This number cannot be reallocated unless the driver has not driven in the sport for two seasons. Only the World Champion is allowed to use number 1. Currently, drivers are allowed to pick their own number for their career from 0, 2 through 99. A Formula One car number is the number on a car used to identify a car and its driver.

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