If the offerings of BMW’s M Performance line can be likened to cupcakes, the initial U.S.-market model is a cupcake without frosting. (Note that M Performance does
not mean M: These will be hotter than typical Bimmers, but not as reworked or expensive as full-bore M cars.) The frosting in this analogy that’s being reserved for European M Performance vehicles: a new
triple-turbocharged inline-six diesel installed in the X5, X6, and 5-series. Instead, the M Performance line will launch in the States with packages for the refreshed 2013 X6. These will include unique trim pieces and extra power for its single-turbo inline-six and twin-turbo V-8 engines, both of which run on gasoline.
