Start the game with the mostwanted.exe -cheats -funlabs
command line to enable cheat mode. Then, press ~ during
game play to display the console window. Enter one of the following
codes to activate the corresponding cheat function.

Code
Toggle God mode godmode <0 or 1>
Team god mode godmodeteam
Toggle no clipping noclip <0 or 1>
Toggle mission failure mw_failmission <0 or 1>
Toggle mission victory mw_winmission <0 or 1>
Toggle HUD mw_showhud (0/1/2)
Toggle AI thinking mw_aidisablethink <0 or 1>
Toggle AI actions mw_aidisableact <0 or 1>
Toggle level selection mw_givealllevels <0 or 1>