Motor1.com typically won’t do instrumented overall performance testing on new vehicles, but Vehicle and Driver has accomplished just that for decades. Previous calendar year BMW pulled the covers from its mildly up to date 5 Series, including the snazzy M550i xDrive packing a 523-horsepower (390-kilowatt) twin-turbocharged V8 under the hood. BMW says it reaches 60 mph in a scant 3.6 seconds, but the C&D group identified otherwise. Ultimately, so did BMW. A lot more on that in a little bit.
Very last calendar year, assessments by the magazine could only muster a 4.1-next sprint to 60 for the beefy Bimmer.