Need for Speed: Most Wanted cheats & codes for PC

Cheat Codes:

Write following codes at the intro screen. This is the screen that says "CLICK to Continue" right after the intro movies and before the main menu. If entered correctly, a message will come up letting you know what you have unlocked!

Code:
castrol - Unlock Castrol SYNTEC Ford GT in Bonus Cars
burgerking - Unlock Burger King Special Event in Challenge Series

Unlock Additional cars:
Defeat the indicated Blacklist Boss to win the corresponding car.

Mercedes-Benz SL 500: Blacklist Boss 11
Mercedes-Benz SLR McLaren: Blacklist Boss 3
Mitsubishi Eclipse: Blacklist Boss 14
Mitsubishi Lancer Evolution VIII: Blacklist Boss 11
Mustang GT: Blacklist Boss 12
Audi TT 3.2 Quattro: Blacklist Boss 15
Aston Martin DB9: Blacklist Boss 7
Audi A3 3.2 Quattro: Blacklist Boss 15
Audi A4 3.2 FSI Quattro: Blacklist Boss 14
BMW GTR (Race version): Blacklist Boss 1
Cadillac CTS: Blacklist Boss 12
Corvette C6: Blacklist Boss 5
Corvette C6.R: Complete 100% of the game
Dodge Viper SRT 10: Blacklist Boss 6
Ford GT: Blacklist Boss 4
Lamborghini Gallardo: Blacklist Boss 6
Lamborghini Murcielago: Blacklist Boss 4
Lotus Elise: Blacklist Boss 8
Renault Clio V6: Blacklist Boss 13
Subaru Impreza WRX STi: Blacklist Boss 9
Toyota Supra: Blacklist Boss 13
Vauxhall Monaro VXR: Blacklist Boss 10
Mazda RX-7: Blacklist Boss 9
Mazda RX-8: Blacklist Boss 12
Mercedes-Benz CLK 500: Blacklist Boss 8
Pontiac GTO: Blacklist Boss 10
Porsche 911 Carrera S: Blacklist Boss 7
Porsche 911 Turbo S: Blacklist Boss 5
Porsche Carrera GT: Blacklist Boss 3
Porsche Cayman S: Blacklist Boss 10

Car upgrade test:

If you don't know which car is the best to use when upgraded, you can upgrade all the cars that are unlocked for free in the main menu! Go to "My Cars", select a car that is available, and upgrade it with the parts that are available. By doing this, you will not waste all your money in Career mode.

Bonus $10,000:

To get an extra $10,000 in career mode, have a Need For Speed Underground or Need For Speed Underground 2 career game saved on your hard drive. After the prologue you will have $40,000.

Higher Heat levels:

You start Campaign mode only being able to achieve Heat levels 1 and 2 (City Police). By defeating certain Blacklist Rivals, you can then achieve the higher Heat levels:
Heat level 3 (State Police): Defeat the Blacklist Rival #13.
Heat level 4 (Undercover State Troopers): Defeat the Blacklist Rival #9.
Heat level 5 (Federal Authorities): Defeat the Blacklist Rival #5.
Heat level 6 (Cross' Street Racin' Unit): Defeat the Blacklist Rival #1 (final level only).
After you beat the Rockport's Most Wanted level, Heat level 5 will then consist of both the Federal Authorities and Cross' Street Racin' Unit.

Don't have money?

If your ever low on cash and need some more, you can re-do past races. Just go to the blacklist, press the up button to see past blacklist members, and choose a race to re-do. Even if you've already won it, you can do it again to win more money.

How to Unlock the 5 Ford GT, 5 SLR Mclaren Bodykits:

Normally, you can only have 2 bodykits for the Ford GT and Mercedes SLR MClaren.
There is a way, to unlock 3 additional Bonus bodkyits in the Black Edition.

You will have to do quick races, win each race 3 times with the same car, wich is fully stock.
You can choose these cars for the race:
Fiat Punto
Volkswagen Golf
Renault Clio V6

Good luck with unlocking..
In the Ford GT There's only 1 new bodykit which is less extreme then the first 2 you will get.
In the SLR, all bodykits are a bit alike the 2nd normal bodykit.

Avoid and remove strikes:

After getting busted and taking a strike, turn off the system the next time you get pulled over. Resume the game and those strikes will be removed.

Nitrous and grip:

Hitting nitrous torques the chassis back, giving the rear tires immensely more weight under the new acceleration. The end effect is that you will go straight. If your tail is sliding out or you are about to spin out of control, hit your nitrous to get straighten out. This is a great trick in combination with Speedbreaker. With the correct timing, you can take most corners at any speed.