極品飛車9可以說是極品飛車系列里最為經典的一代，耐玩性最高，下面是一些游戲的秘籍，使用方法也很簡單，就是在剛進游戲，出現click any key to continue（點擊任意鍵繼續）的時候輸入：

iammostwanted 獲得所有車輛。

burgerking 進入額外的Burger King挑戰模式。

castrol 獲得隱藏車輛 Castrol Ford GTI。

在"點擊以繼續"畫面或主選單輸入以下密碼

inthezoneskin = Autozone Vinyl Unlocked! 解開
syntecskin = Castrol Syntec Vinyl Unlocked! 解開
*5grand5grand = Castrol Cash Unlocked! 解開
shinycarsarethebestcars = Chrome Cars Unlocked! 解開
cooperlogofreeforyou = Cooper Tire Logo Unlocked! 解開
chasingmobile = Corvette Z06 Interceptor Unlocked For Quick Race! 解開可以在快速競賽中使用Corvette Z06 Interceptor
guesswhoisback =Cross Corvette Z06 Unlocked For Quick Race! 解開可以在快速競賽中使用Cross Corvette Z06
trashtalking = Rhino Unlocked For Quick Race! 解開可以在快速競賽中使用Rhino
bigredfiredrive = Fire Truck Unlocked For Quick Race! 解開可以在快速競賽中使用消防車
*friendlyheadlocksapplied = Infinite Crew Charge! 解開無限隊員能量值
*nosforeverever = Infinite Nitrous! 解開無限氮氣
slowitdownwhenyouwant = Infinite Speedbreaker! 解開無限子彈時間
*speed3foryou = Mazda Speed3 Unlocked! 解開 Mazda Speed3
*lotsoffreelogos = Need for Speed Carbon Logo Vinyls Unlocked! 解開極十車身圖案
*lotsoffreevinyls = Need for Speed Carbon Special Logo Vinyls Unlocked! 解開極十特別車身圖案
watchoutthebigtruckishere = Dump Truck Unlocked For Quick Race! 解開可以在快速競賽中使用Dump Truck
pharrellvinylgogo = Pharrell Vinyl Unlocked! 解開
chasingheadlocksappliedrashtalk = Mazda Dealership Unlocked! 解開Mazda Dealership
givemethedb9 = 2005 Aston Martin DB9 Unlocked! 解開Aston Martin DB9
givemethechargersrt8 = 2006 Dodge Charger SRT8 Unlocked! 解開Dodge Charger SRT8
canyonalltheway = All Tracks Unlocked! 解開所有車子