Top speed ratings are slippery things, as manufacturers test their cars under varying conditions that can affect the final score (remember, a paltry 1 percent error is 2 mph at 200 mph), they often couch results in terms of “more than X miles per hour” and the Europeans commonly provide speeds that are suspiciously round numbers in kilometers that convert to decidedly non-round mph.
As a result, a top speed list that isn’t generated from a group of cars tested in the same place on the same day will always be suspect. However, we enjoy such unprecedented speed in 2017 that it seems worth a try to round up the ten very fastest cars money can buy right off the showroom floor.