1975 Spanish Grand Prix
It was the 21st Spanish Grand Prix since the race was first held in 1913. It was the fourth, and last, Grand Prix to be held on the Montjuïc street circuit. The race was shortened to 29 of its scheduled 75 laps, a race distance of 109 kilometres. The race was won by German driver Jochen Mass driving a McLaren M23. It would be the only Formula One win of his career. Mass had just a second lead over the Lotus 72E of Belgian driver Jacky Ickx when the race was declared. Argentine racer Carlos Reutemann was declared third in his Brabham BT44B, a lap behind the race leaders after a penalty was given to Jean-Pierre Jarier. This was the final win by a German driver until Michael Schumacher won the 1992 Belgian Grand Prix.
1970 Spanish Grand Prix
Prior to the race, the organisers of the Grand Prix sparked anger amongst the members of FOCA when they limited the number of starters to only sixteen. To add to the chaos, none of the laps set on Friday were counted towards qualifying. On the morning before the race, the matter seemed resolved and the organisers initially reversed their decision, and those who failed to qualify looked as if they would be allowed to start. The Commission Sportive Internationale then stepped in and forced the Spanish organisers to revert to the original limit of sixteen starters, and the cars that failed to qualify were wheeled off the grid.
The race was won by defending world champion Jackie Stewart, driving a March 701. American driver Mario Andretti took his first Formula One podium in third place. The race was marred by a serious accident involving Jackie Oliver and Jacky Ickx. Both their cars burst into flames, and Ickx was slightly burned after his race overalls became soaked in burning fuel. He recovered sufficiently to be able to compete in the next race, however, at Monaco. Bruce McLaren scored his last podium, points and race finish.