Taking a leaf out of the BMW X6's page, the X4 is the company's second “Sports Activity Coupe”. Best described as a sleeker X3, the X4 is a mix of style and practicality in a rather stylish package. The X4 also gets BMW's 6 cylinder turbodiesel with the 2.0 liter diesel being the standard engine that sits on the fine line between power and economy.

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