Sato joined the new Super Aguri F1 team for , run by Japanese former driver Aguri Suzuki. The new outfit was in effect a Honda B-team but ran the first half of the season with a modified version of a 2002 Arrows A23 chassis. Nevertheless, Sato's reputation improved thanks to his professional attitude and competitive spirit. The team introduced a new car, the SA06 at the and by the end of the season Sato was outpacing the Midland cars. At the season finale in Brazil Sato finished tenth just two places short of a points finish and comfortably ahead of both Toro Rossos and the Spyker MF1s.