It’s been more than four years since I last drove a Buick Regal and while it hasn’t changed all that much mechanically, the evolutionary updates to this midsize sedan have generally if not universally been a good thing. As I familiarize myself with the vehicles on the market today for my day job as an industry analyst, I got to spend several days with the performance pinnacle of the current Buick lineup, the 2015 Regal GS with all-wheel-drive and the operative word is smoothness.

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