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.
Brazilian Grand Prix
A Brazilian Grand Prix was first held in 1972 at Interlagos, although it was not part of the Formula One World Championship. Typical of European motorsports at the time, this race was done as a test to convince the FIA if the Interlagos circuit and its organizers could capably hold a Grand Prix. Like most major circuits used for Grands Prix in Latin America such as the Hermanos Rodríguez Autodrome in Mexico City and the Almirante Brown Autodrome in Buenos Aires, Interlagos was (and still is) located in the confines of a sprawling urban neighborhood in a very large city. The following year, however, the race was first included in the official calendar, and it was won by defending world champion and São Paulo native Emerson Fittipaldi. In 1974, Fittipaldi won again in rain soaked conditions, and the year after, another São Paulo native, Carlos Pace, won the race in his Brabham, followed by Fittipaldi. 1977 was won by Reutemann, but the drivers began complaining about Interlagos's very rough surface, and the event was then relocated for a year to the new Jacarepaguá circuit in Rio de Janeiro.