Here is the full list of 534 cars that will be in the Forza Motorsport 4 game that you will be able to choose from. Forza Motorsport 4 Car List. 503 Cars (including 17 Unicorns) from 79 Forza Motorsport 4 is a game developed by Turn 10 for the Xbox 360, and is the successor to the very successful Forza Motorsport 3. The List of Tracks. American Le Mans Series Racing. Garage Thursday. Forza Motorsport NSX: 2005: Aston Martin: Forza Motorsport DB9 Coupe: 2010: Audi: Forza Motorsport R8 5.2 FSI quattro: 2008: Dodge: Xbox 360 Charger Stock Car: 2003: Nissan: Forza Motorsport ZVVF6m.