Save with all versions of BMW M3 GTR at the start of the game.
It’s called “BMW” (I think it’s clear why).
BMW versions available:
BMW from the beginning of the game;
BMW from the beginning of the game with a full Junkman;
BMW from the end of the game;
Need for Speed: Most Wanted (2005): Save Game (Save Game with all versions of BMW M3 GTR) Free Download
BMW from the end of the game with a full Junkman;
BMW Street (bonus);
BMW Street, strange version, opens with a trainer. has 416 km / h and fast acceleration, good control.
All BMWs except STREET versions have BMW vinyls
Bonus: There’s a Reizor Mustang in the garage with its own vinyl, styling and tuning! It rides as much as the original BMW.
Instructions: Copy the BMW folder from the archive to My Documents -> NFS Most Wanted.