Watch the BMW X6 M and Mercedes-AMG GLE63 S Coupe go Head 2 Head

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Now in its second generation, the 2015 BMW X6 M is facing competition from the all-new 2016 Mercedes-AMG GLE63 S. But which of the two luxury SUV coupes is best? Host Jonny Lieberman finds out on this episode of “Head 2 Head.” Power for the Mercedes-AMG GLE63 S comes from a twin-turbo 5.5-liter V-8 ratedNow in its second generation, the 2015 BMW X6 M is facing competition from the all-new 2016 Mercedes-AMG GLE63 S. But which of the two luxury SUV coupes is best? Host Jonny Lieberman finds out on this episode of "Head 2 Head."