AGS JH25B

The AGS JH25B was a Formula One car designed by Michel Costa for use in the 1991 Formula one season by the French AGS team. It was powered by the 3.5-litre Ford DFR V8. The car was driven by Italian drivers Gabriele Tarquini, Fabrizio Barbazza, and Swedish driver Stefan Johansson.

The AGS JH25B's best – and only – result was 8th place by Tarquini at the United States Grand Prix. The car was unable to qualify for many of the 1991 races, and on the rare occasion it qualified, was retired from the race.

Automobiles Gonfaronnaises Sportives was experiencing financial problems and the team was not able to upgrade the car further. The car got slower and slower as spare parts were used up. The team was sold to Italian businessmen Patrizio Cantù and Gabriele Raffanelli, and from the Italian Grand Prix, the JH25B was replaced by the JH27. The new chassis was considered worse than the JH25B, and three races later, AGS closed down.