The race marked the twelfth Argentine Grand Prix and the second time the event utilized the lengthened six-kilometre configuration of the track. This layout extended toward the Curvon Salotto, circling the lake located to the north-east of the circuit.
The preceding close season featured several driver transitions and team developments. Jochen Mass joined McLaren to replace Denny Hulme, while John Watson moved to Surtees. Other confirmed entries included Mike Wilds at BRM, Rolf Stommelen at Hill, and Jacques Laffite at Williams. Although March had initially announced a retirement from the sport, the team reversed the decision to enter Vittorio Brambilla and Lella Lombardi for the 1975 season.
Contractual uncertainty surrounded Ronnie Peterson during the lead-up to the event. Amid reports of discontent at Lotus, his participation remained unconfirmed until the start of practice, as negotiations fluctuated between his current team and Shadow.
Jean-Pierre Jarier secured his first career pole position driving for Shadow, recording the fastest ever lap of the circuit with an average speed of 122 mph. This result marked the first pole position for the Shadow team and the first time an American constructor achieved a pole position in Formula One. Jarier qualified ahead of Carlos Pace and Carlos Reutemann.
Two drivers failed to start the race despite their entries. Nestor García-Veiga, who was set to make his Formula One World Championship debut, withdrew following a crash during pre-race testing. His vacancy on the grid, along with that of Jarier, was not filled.
The race began with a significant mechanical failure for the pole-sitter. During the warm-up lap, the crown-wheel-and-pinion on Jean-Pierre Jarier’s Shadow stripped, preventing him from starting the race. This allowed Carlos Reutemann to take the lead at the start.
James Hunt, driving a Hesketh 308 equipped with new rubber suspension, advanced from the sixth row of the grid to third place, engaging in a duel with Niki Lauda. In the midfield, Jochen Mass and Jody Scheckter were involved in a collision. John Watson was disqualified from the event after he attempted to perform trackside repairs on a loose fuel-pipe that had left him stranded.
On lap 13, Wilson Fittipaldi crashed his self-constructed Fittipaldi chassis. The car caught fire, necessitating the deployment of a fire engine. By this stage of the race, Hunt had overtaken Lauda and began closing the gap to the leading Brabhams. Carlos Pace took the lead on lap 15 but spun on the following lap, allowing Reutemann to reclaim the front position.
Reutemann’s Brabham BT44B suffered from severe understeer, and on lap 25, he was overtaken by Hunt. A ferocious battle for the lead subsequently developed between Hunt and Emerson Fittipaldi. Fittipaldi eventually secured the lead and the win, while Reutemann finished third, marking his best home race result to that date.
The 1975 Argentine Grand Prix served as a significant milestone for several constructors and drivers:
McLaren: The race was the 100th Grand Prix start for the team. At this point in their history, McLaren had achieved 13 wins, 47 podiums, 4 pole positions, 6 fastest laps, and one Drivers' and Constructors' Championship title.
New Constructors: The event marked the Formula One World Championship debuts for Frank Williams Racing Cars, the Brazilian constructor Fittipaldi, and the Argentinian constructor Berta. Fittipaldi and Berta were the first constructors from their respective nations to enter the series.
Hesketh: The team recorded its first fastest lap during this event.
Tyres: This was the final race for Firestone tyres in Formula One. The Parnelli team, driven by Mario Andretti, utilized the brand before Firestone withdrew to focus on USAC racing in America.
Driver Debuts: The event was the scheduled debut for Argentinian driver Nestor García-Veiga, though he did not start the race.