Forza Motorsport 4 Cheats

Exclusive Taste (50): Own the five most expensive cars in the game (not including DLC).
Expert (25): Complete the fifth year of Season Play.
Factory Driver (60): Get any Car Manufacturer to Affinity level 50.
Ferrari Collector (40): Own every Ferrari included on Disc 1.
Flat Out (5): Earn a perfect Speed score.
Forza Faithful (15): Import a file from Forza Motorsport 3.
Forza World Tourer (60): Finish a race on every race track in Forza Motorsport 4.
Grease Monkey (10): Create a car tuning file for your car.
Here's My Card (10): Create a custom playercard with badges and titles.
Kingpin (5): Knock down a gold bowling pin in Car Bowling.
Legend (50): Complete the tenth year of Season Play.
Legendary Battle (15): Beat a Ferrari 330 P4 in any race while driving a Ford GT40 Mark II.
Look Ma, No Controller! (5): Use Kinect to drive any car in Free Play.
Masters (25): Complete the seventh year of Season Play.
My Car is Your Car (10): Share a car in your garage with your Car Club.
Nice Pass (15): Earn a perfect Pass score.
On Location (20): Take a photo of any car in every Home Space.
Outta Time (10): Reach 88 mph in a DeLorean.
Painter (10): Create a paint job or vinyl group for your car.
Perfect Turn (15): Earn a perfect Turn score.
Professional (25): Complete the sixth year of Season Play.
Rivals Shootout (10): Race and defeat an opponent in Rivals mode.
Semi-Pro (25): Complete the fourth year of Season Play.
Show Off (10): Upload a movie to Forzamotorsport.net.
Slipstreamin' (5): Earn a perfect Draft score.
Speed Demon (10): Reach 240 mph in any car.
Sportsman (25): Complete the third year of Season Play.
Star in a Reasonably Priced Car (10): Complete a lap around the TopGear Test Track while driving a KIA cee'd.
Unicorn Hunter (10): Be the winning bidder on any "unicorn" car in the Auction House.
Welcome to Forza Motorsport (15): Complete the very first race in the game.

May Top Gear Pack Achievements
Amateur (25): Complete the first year of Season Play.
Autocrosser (10): Complete 10 Autocross events without hitting gate cones.
Awesome Drift (20): Earn a perfect Drift score.
Born Competitor (30): Post a time in every Rivals mode event.
Bucket List (80): Finish 1st in every single race in the Event List in Career play mode.
Car Explorer (10): Fully explore any car in Autovista.
Champion (25): Complete the ninth year of Season Play.
Clubbed Up (15): Create or join a Car Club.
Clubman (25): Complete the second year of Season Play.
Daily Rewards (5): Visit the Message Center on at least five unique days.
Driver Level 1 (20): Reach Driver Level 1 in Career mode.
Driver Level 10 (20): Reach Driver Level 10 in Career mode.
Driver Level 20 (20): Reach Driver Level 20 in Career mode.
Driver Level 30 (20): Reach Driver Level 30 in Career mode.
Driver Level 40 (20): Reach Driver Level 40 in Career mode.
Driver Level 50 (20): Reach Driver Level 50 in Career mode.
Elite (25): Complete the eighth year of Season Play.
Entrepreneur (10): Sell a car tuning, paint job, or vinyl group from your storefront.
Exclusive Taste (50): Own the five most expensive cars in the game (not including DLC).
Expert (25): Complete the fifth year of Season Play.
Factory Driver (60): Get any Car Manufacturer to Affinity level 50.
Ferrari Collector (40): Own every Ferrari included on Disc 1.
Flat Out (5): Earn a perfect Speed score.
Forza Faithful (15): Import a file from Forza Motorsport 3.
Forza World Tourer (60): Finish a race on every race track in Forza Motorsport 4.
Grease Monkey (10): Create a car tuning file for your car.
Here's My Card (10): Create a custom playercard with badges and titles.
Kingpin (5): Knock down a gold bowling pin in Car Bowling.
Legend (50): Complete the tenth year of Season Play.
Legendary Battle (15): Beat a Ferrari 330 P4 in any race while driving a Ford GT40 Mark II.
Look Ma, No Controller! (5): Use Kinect to drive any car in Free Play.
Masters (25): Complete the seventh year of Season Play.
My Car is Your Car (10): Share a car in your garage with your Car Club.
Nice Pass (15): Earn a perfect Pass score.
On Location (20): Take a photo of any car in every Home Space.
Outta Time (10): Reach 88 mph in a DeLorean.
Painter (10): Create a paint job or vinyl group for your car.
Perfect Turn (15): Earn a perfect Turn score.
Professional (25): Complete the sixth year of Season Play.
Rivals Shootout (10): Race and defeat an opponent in Rivals mode.
Semi-Pro (25): Complete the fourth year of Season Play.
Show Off (10): Upload a movie to Forzamotorsport.net.
Slipstreamin' (5): Earn a perfect Draft score.
Speed Demon (10): Reach 240 mph in any car.
Sportsman (25): Complete the third year of Season Play.
Star in a Reasonably Priced Car (10): Complete a lap around the TopGear Test Track while driving a KIA cee'd.
Unicorn Hunter (10): Be the winning bidder on any "unicorn" car in the Auction House.
Welcome to Forza Motorsport (15): Complete the very first race in the game.

Extra Autovista Cars
1931 Bentley 8 Litre: Complete 9 Autovista Challenges.
Halo 3 Warthog: Complete all Autovista challenges.