In 2006, Senna competed in the Formula Three support races at the 2006 Australian Grand Prix, winning three of the four races. Driving a Spiess Opel powered Dallara F304, Senna set the Formula Three lap record of 1:50.8640 in the first race of the meeting which as of 2016 remains the fastest ever non-F1 lap of the Melbourne Grand Prix Circuit. Senna finished 3rd in the race, the only one of the 4 races he did not win over the weekend.