BMW's decision to carve a sleeker shape from its X3 crossover once seemed curious but it's now commonplace. Now the 2019 BMW X4 shows that the concept not only endures, but also evolves. When it goes on sale in July, the 2019 BMW X4 will cost more than $51,400, including destination, which is nearly $3,000 more than the model it replaces. The 2019...
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