In Prost became the first French Formula One World Champion. He won five of the sixteen Grands Prix during the season. He had also won the San Marino Grand Prix, but was disqualified after his car was found to be 2 kg underweight in post-race scrutineering. Prost finished 20 points ahead of his closest rival, Michele Alboreto. Prost's performance in 1985 earned him the Légion d'honneur distinction in France.