2016 ford focus st
2013 VW mk6 or 2019 mk7 gti
2009 honda civic si
2009 chevy cobalt ss
2017 Subaru wrx
mazda speed 3 would be awesome too
I know these arent the most popular cars in the world or anything but there is a great majority of people who own these cars and also play forza. it would be pretty cool to see these cars make it into the game at some point.