The team was founded by Henri Julien, a French mechanic who ran the Garage de l'Avenir in Gonfaron, a small village in the Var department of southern France. In the late 1950s and early 1960s Julien attended minor racing events as a participant, and his accumulated technical knowledge led him to begin building his own race cars. His first machine, the AGS JH1, appeared in 1969 as a single-seater for the French Formule France category. It was designed by Julien's former apprentice, the Belgian mechanic Christian Vanderpleyn, who remained with the team until 1988.
AGS moved into Formula 3 with cars that were competitive but unable to challenge the dominant Martini machinery of the period. In 1978 the team stepped up to the European Formula 2 Championship, still using self-penned, self-built, and self-run cars. After two points-less seasons, the early 1980s brought gradual improvement. In 1984, works driver Philippe Streiff won the final Formula 2 race in AGS machinery, a notable achievement for so small an operation.
AGS competed in Formula 3000 in 1985 and 1986 with the JH20, based on a Duqueine chassis and powered by a Cosworth DFV. Results were mediocre. In late summer 1986, however, the team entered Formula One for the first time at the Italian Grand Prix in Monza.
The car for that debut — the JH21C — was a distinctive hybrid, combining former AGS Formula 3000 components with Renault F1 parts. Power came from a Motori Moderni turbo engine, the only occasion those Carlo Chiti-developed units were supplied to a customer team. Ivan Capelli drove. The car failed to finish in either of its two 1986 appearances.
For the full 1987 season, Vanderpleyn designed the naturally aspirated JH22, using a Cosworth DFZ. Pascal Fabre drove, finishing eight of the first nine races without ever threatening the points. He failed to qualify on three occasions. In the final two races Fabre was replaced by Roberto Moreno, who scored AGS's first World Championship point in Adelaide — a result that left the team level on points with the better-funded Ligier and the returning March at season's end.
AGS began 1988 with the JH23 and Philippe Streiff as sole driver. A major sponsorship from the French Bouygues construction group provided financial stability and funded work on a new factory outside Gonfaron. Streiff qualified well and showed genuine pace, though finishing results were limited by mechanical unreliability. Disaster struck before the 1989 season when Bouygues withdrew mid-commitment, after construction of the new facility had already begun. Julien was forced to sell the team to French entrepreneur Cyril de Rouvre to save it. Shortly before the 1989 season, Streiff was paralysed in a testing accident in Brazil, ending his racing career.
Gabriele Tarquini replaced Streiff and delivered the team's most competitive racing of its Formula One career. He was close to the points at Monaco and in the United States, then finished sixth in the Mexican Grand Prix — AGS's best-ever result. After those highlights the team declined: qualifying was increasingly difficult under the pre-qualification system introduced that year to manage an expanded 39-car entry list, and Tarquini and Yannick Dalmas frequently failed even to pre-qualify. The new management installed by de Rouvre changed frequently; Vanderpleyn departed for Coloni.
No improvement came in 1990. Dalmas scored ninth in Spain — the team's last points result — but AGS could not pre-qualify consistently. By 1991 the team was openly in crisis: at the first two Grands Prix in Brazil and Phoenix, team mechanics paid for their own hotel accommodation out of pocket. Tarquini's eighth place in Brazil was the last classified finish an AGS car ever achieved.
De Rouvre sold the team to Italian entrepreneurs Patrizio Cantu and Gabriele Rafanelli. They made few technical changes — a new car, the JH27, appeared in late autumn — but the financial problems were unresolved. After the 1991 Spanish Grand Prix at Jerez, the team shut its doors permanently.
In its six seasons of Formula One, AGS scored a total of two World Championship points and competed almost entirely at the back of the grid. Its significance lies less in results than in what it represented: an independent constructor run from a village garage in rural Provence, built by craftsmen rather than engineers with factory resources, that nonetheless reached and competed in the pinnacle of the sport for several years. AGS survived beyond its Formula One closure as a driving school operating near Le Luc, not far from the village of Gonfaron where it all began.
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