Toyota Mark X late 1960s. Instead of being based on a modified Supra chassis "A" series platform, the Mark X continues to use the Toyota "X" platform, and does not share its platform with the Toyota "S" series platform used under the Toyota Crown and the Lexus GS. The continuation of describing this vehicle as the "X" series is a reference to the first dedicated Mark II platform introduced in 1972. Major changes to the Mark series are the engine and footwork. Toyota discontinued the straight-six engines used in the Toyota Verossa, which included the JZ series and the G series engines, and
2009–11 Toyota vehicle recalls 2009–11 Toyota vehicle recalls The 2009-11 Toyota vehicle recalls involved three separate but related recalls of automobiles by Toyota Motor Corporation, which occurred at the end of 2009 and start of 2010. Toyota initiated the recalls, the first two with the assistance of the U.S. National Highway Traffic Safety Administration (NHTSA), after reports that several vehicles experienced unintended acceleration. The first recall, on November 2, 2009, was to correct a possible incursion of an incorrect or out-of-place front driver's side floor mat into the foot pedal well, which can cause pedal entrapment. The second recall, on January 21, 2010, was