Forza Horizon 3/Cars, Forza Wiki

Cars in Forza Horizon 3 can be purchased from the Autoshow or Auction House. They are also rewarded to players from Horizon Wheelspins, discovering Barn Finds, unlocking Skill Shop perks and winning Forzathon events. Players may also increase their vehicle roster by purchasing downloadable content. Each car is categorised within a division that puts it against similar cars. The Performance Index determines the performance capabilities of a car, with D featuring the slowest and S2 the fastest car

Mosler MT900S, Forza Wiki

Audi RS 3 Sportback, Forza Wiki

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Cars, Forza Wiki

Forza Motorsport 3 - Wikipedia

Forza Horizon 3 All Cars Photography Project (1st wave of invites sent, please check PM's) - Photography - Official Forza Community Forums

Vehicles - Forza Horizon 3 Guide - IGN