With the X4 xDrive35i engine-upgrade model no longer available, leaving the new-for-2016 BMW X4 M40i as the sole six-cylinder model in the lineup. The M Sport package for the X4 xDrive28i gets a ...

The X4 is one of two coupe-like SUVs in BMW's lineup, positioned below the X6. In BMW's SUV lineup, the X4 slots above the the new X2 and X3, but below the larger and more expensive X5 and X6.