Mass won the 1975 Spanish Grand Prix after leader, Rolf Stommelen's car hit a protective barrier, exploded into flames and catapulted into the crowd at the Montjuich circuit. Four spectators were killed and twelve were injured. Stommelen suffered multiple fractures and was in a critical condition after the accident. Mass was declared the winner in his Texaco McLaren-Ford, when the race was stopped immediately after the accident.