The BMW X4 is new for the 2015 model year, and it doubles down on the German automaker's success with the X6--its first foray into the hazy world of coupe-like crossovers. Assembly takes place at BMW's U.S. facility in Greer, South Carolina, alongside the X3, the X5 and the X6. Smaller and X3-based, the X4 makes its world debut at the...
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