The Volkswagen Group MQB platform is the company's strategy for shared modular design construction of its transverse, front-engine, front-wheel-drive layout automobiles. It was first introduced in the Volkswagen Golf Mk7 in late 2012. Volkswagen spent roughly $8bn developing this new platform and the cars employing it. The platform underpins a wide range of cars from the supermini class to the mid size SUV class. MQB allows Volkswagen to assemble any of its cars based on this platform across all of its MQB ready factories. This allows the Volkswagen group flexibility to shift production as needed between its different factories. Beginning in 2012, Volkswagen Group marketed the strategy under the code name MQB, which stands for Modularer Querbaukasten, translating from German to "Modular Transversal Toolkit" or "Modular Transverse Matrix". MQB is one strategy within VW's overall MB program which also includes the similar MLB strategy for vehicles with longitudinal engine orientation.

The SEAT León, also spelled Leon in some other languages, is a small family car built by the Spanish car manufacturer SEAT since October 1999.