The BMW X4 is an as-yet un-released new crossover coupe, built to fit alongside the X3, just as X6 sits beside the X5. While it won't be launched in production form until sometime in 2014, likely as a 2015 model, a concept version of the model has given us a very good look at what we might expect. As a coupe-like crossover, design is one of the...
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