One of the recent rumors involves the Bavarian car maker who is apparently thinking of developing an BMW X4 Series as a result of the success they had with the X6 model.
The BMW X4 could use a version of the platform featured on the new X3 while in terms of design the company might create a combination between the X Coupe concept and the X6.
Another argument that could support the BMW X4 Series rumors is the fact that the German manufacturer has developed several niche models recently, with the BMW Gran Coupe (8 Series) presented in Beijing last week as the latest addition.

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Source: Autocar