For the 21st consecutive year, Marlboro was the team's title sponsor, with additional sponsorship from Hugo Boss, Shell and Goodyear. The MP4/9 was the first and only McLaren F1 car to utilise Peugeot engines.
Marlboro's long-standing relationship with the team spanned 21 years, backed by additional sponsorship from prominent brands like Hugo Boss, Shell, and Goodyear. Notably, the MP4/9 was the first and only McLaren F1 car to run on Peugeot engines.