Here are some cheats and tips for the game Need For Speed Most Wanted.
One Stop Shop marker:
Press Up(2), Down(2), Left, Right, Up, Down at the “Press Start” screen.
A special marker for the Junkman Engine part will appear in the back
room of the One Stop Shop in career mode.
Castrol Syntec Ford GT:
Press Left, Right, Left, Right, Up, Down, Up, Down at the “Press Start”
screen.
Porsche Cayman:
Press L, R(3), Right, Left, Right, Down at the “Press Start” screen.
Burger King challenge:
Press Up, Down, Up, Down, Left, Right, Left, Right at the “Press Start”
screen. A confirmation message stating that you have unlocked a
“Special Challenge Event” will appear.