The Toro Rosso STR6 is a Formula Oneracing car developed by Scuderia Toro Rosso for the 2011 Formula One season. It is the second car that the team has built entirely on their own following the introduction of regulations that banned the use of "customer chassis", a chassis developed by one team and purchased by another (prior to 2010 Toro Rosso used a customer chassis from its "big brother" Red Bull Racing).
The Toro Rosso STR6 was powered by the Type 056 engine from Ferrari, the same engine that powered the works Ferraris but Toro Rosso STR6 was opted 2010-spec Ferrari 056 engine due to cheap price reasons. Alguersuari recorded the cars highest qualifying position with 6th at the Belgian Grand Prix and he also recorded the cars best finish with a pair of 7th places at the Italian and Korean Grands Prix. Buemi and Alguersuari combined to score 41 points in 2011 giving the team 8th in the Constructors Championship. Buemi scored 15 of the points to finish the Drivers' Championship in 15th place while Alguersuari scored 26 to finish 14th.
The drivers proved well-matched, with Buemi having a slight edge over Alguersuari. However, the Swiss left the team and championship at the end of the year to join newly-reformed Toyota Racing for newly-reformed World Endurance Championship from 2012 onwards.
The team eventually finished seventh in the Constructors' Championship, with 11 points.