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
Luxury vehicle the United States, the mid-luxury segment is dominated by Mercedes-Benz and BMW, as executive cars from lesser-known manufacturers such as Citroën and Infiniti have not had much success. Vehicles in this segment include the mid-range models of several luxury car manufacturers. Executive cars such as the BMW 5 Series are crucial to a luxury automaker's bottom line, and although not the highest-selling model, they generate a significant amount of profits due to the lucrative technology options. Also known as full-size luxury cars, grand saloons, flagship car, or premium large cars, while "Oberklasse" is used in Germany. Many of these are