At the Australian Grand Prix and the Malaysian Grand Prix races, an official complaint was launched by other teams against the rear diffusers of the Williams FW31, Toyota TF109 and the Brawn BGP 001 saying that they were illegal,[3] but after analysing the cars the FIA deemed that the cars were legal.

Both cars were therefore excluded from the qualifying classifications and started the race from the pitlane, fitted with replacement wings.

[citation needed] Jarno Trulli started the season perfectly with third place before a strong finish in Malaysia.

In Japan he endured a terrible leg injury after crashing out during qualifying meaning he was out of action before the end of the season.

Kamui Kobayashi spent the majority of 2009 in the GP2 Series and being Toyota test driver before getting to drive the car in Brazil.

Nick Heidfeld, Pedro de la Rosa, Romain Grosjean and Lucas di Grassi tested the tires before it returned to the sport in 2011.