The race of high attrition, which was run in heat, was won by Rosberg driving the Williams-Honda; it would turn out to be the last victory (and last fastest lap) of his Formula One career. Rosberg was the only front running driver to finish strongly and one of only eight cars to be classified. It was the fifth and final Grand Prix win of Rosberg's career and confirmed his status as a street race specialist with three of his previous four wins being on the streets of Monaco (1983), Dallas (1984), and Detroit earlier in the 1985 season. Rosberg had some technical problems which could have lost him the race, his race engineer, Frank Dernie suggested a strategy to minimise loss of time. Rosberg gave the winner's trophy to Dernie.
