The season brought the Williams-Honda partnership its first and only Drivers' Championship title in the hands of Nelson Piquet. Piquet won three races and scored 76 points – 73 after dropped scores (best eleven results counted) in relation to the Drivers' Championship. His teammate Mansell was in second place with six victories and 61 points for the season. The Williams team won the Constructors' Championship for the second year running, scoring 137 points, 61 points ahead of their nearest rivals, McLaren. Despite this success, Honda ended their partnership with Williams at the end of the year in favour of McLaren and continuing with Lotus.