The game follows the same path as its predecessors by taking the player on a quest to win new tracks and vehicles. This installment has the added twist of going international, with the challenge now spanning locales around the world. Test Drive 4 features 14 modern and classic street-legal vehicles, covering a wide range of makes and styles. Only a few vehicles are available to the player from the outset, with the rest needing to be won or purchased as the game progresses. There are six tracks with locations in five different countries.