1975 Argentine Grand Prix

The close season had been fairly quiet – Jochen Mass had replaced Denny Hulme at McLaren, John Watson had joined Surtees and Mike Wilds, Rolf Stommelen and Jacques Laffite were confirmed at BRM, Hill and Williams respectively.

March had announced their retirement, but then in a dramatic U-turn confirmed their entry for 1975 with Vittorio Brambilla and Lella Lombardi.

There were contractual wrangles with Ronnie Peterson, reportedly discontent at Lotus and it was uncertain up until the start of practice whether he would be driving for them or Shadow.

Jean-Pierre Jarier proved the Shadow's effectiveness, putting in the fastest ever lap of the circuit, averaging 122 mph to gain his first pole from Carlos Pace and Carlos Reutemann.

However it was all in vain. On the warm-up lap, his crown-wheel-and-pinion stripped, leaving him a non-starter. Local hero Reutemann gratefully accepted the lead from Pace. James Hunt driving the newest Hesketh with new rubber suspension climbed from the 6th row up to third place, duelling with Niki Lauda. Jochen Mass and Jody Scheckter tangled. Meanwhile, John Watson was stranded with a loose fuel-pipe and was disqualified after attempting trackside repairs.

Wilson Fittipaldi crashed on lap 13, his car catching fire and requiring the fire engine to be deployed. By now, Hunt had passed Lauda and was catching the two Brabhams. Pace took the lead on lap 15, but spun on the very next lap. Reutemann having retaken the lead, was understeering badly and on lap 25 was passed by Hunt. There was a ferocious battle with Emerson Fittipaldi for the lead.

• This was the Formula One World Championship debut for Argentinian driver Nestor García-Veiga.
• This was the 100th Grand Prix start for McLaren. In those 100 races, McLaren had won 13 Grands Prix, achieved 47 podium finishes, 4 pole positions, 6 fastest laps and won 1 Driver's and 1 Constructor's World Championship.
• This race marked the Formula One World Championship debut for British constructor Frank Williams Racing Cars (as a constructor), Brazilian constructor Fittipaldi and Argentinian constructor Berta. Both Fittipaldi and Berta were the first constructors of their respective nations to participate in Formula One.
• This was the first pole position for American-British constructor Shadow. Shadow became the first American constructor to get a pole position.
• This was the first fastest lap set by a Hesketh.

Drivers' Championship standings Pos Driver Points 1   Emerson Fittipaldi 9 2   James Hunt 6 3   Carlos Reutemann 4 4   Clay Regazzoni 3 5   Patrick Depailler 2 Source:[8]

Constructors' Championship standings Pos Constructor Points 1   McLaren-Ford 9 2   Hesketh-Ford 6 3   Brabham-Ford 4 4   Ferrari 3 5   Tyrrell-Ford 2 Source:[8]

• Note: Only the top five positions are included for both sets of standings.