BMW 640d Gran Coupe vs. Mercedes CLS 350 CDI vs. Porsche Panamera
6 Series Gran Coupe | July 8th, 2012 by Horatiu Boeriu
AutoExpress magazine pits the all-new BMW 640d Gran Coupe against some of its segment competitors, the Mercedes-Benz CLS 350 CDI and Porsche’s four-door gran tourer, …
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