The Ford Focus RS has accounted for 1,674 sales through September 2016 (all figures here are through the same date). The Focus ST has sold the most units at 8,249, and the Fiesta ST pulled in 3,215 sales. If you were to run the numbers as percentages then the Focus RS would account for just 1% of Focus sales, although that number is skewed as you can't break down sales by sedan or hatchback. If you lump the Focus ST into the mix then the amount of turbo’d Focuses sold through September 2016 jumps to 7%. Again, that number should be higher, but even 7% isn’t awful when you consider that Americans supposedly aren’t into hot hatchbacks. Ditto for the Fiesta ST, which makes up 8% of all Fiesta sales (sedan included).