Jus picked up a 2016 640i on Euro Delivery & it's fantastic.... IMO the M4 exterior looks better, but 6 interior is more upscale to my taste. The glove box also reminds me of a 777 overhead bin, so since I care most about interiors, I selected a 6! Keep in mind supposedly all new 6-series body style comes out for MY2017 reveal I think is this November..? Something to consider. Both great machines
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