The BMW M Division has expanded its fast SUV model portfolio with a couple of closely related alternatives to the Porsche Macan and Mercedes-AMG GLC 63: they are the new X3 M Competition and X4 M Competition, the latter being the more curvy-roofed "sports activity coupe" variation on the familiar theme. But are these new, high-rise M cars also 'proper' ones? Matt Saunders drove both at and around
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