Full list of all 58 Forza Motorsport 4 achievements worth 1,250 gamerscore. It takes around 150-200 hours to unlock all of the achievements in the base game.
The base game contains 48 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 250 Gamerscore.
Get any Car Manufacturer to Affinity level 50.
Finish 1st in every single race in the Event List in Career play mode.
Own the five most expensive cars in the game (not including DLC).
Own every Ferrari included on Disc 1.
Finish a race on every race track in Forza Motorsport 4.
Be the winning bidder on any "unicorn" car in the Auction House.
Complete 10 Autocross events without hitting gate cones.
Take a photo of any car in every Home Space.
Beat a Ferrari 330 P4 in any race while driving a Ford GT40 Mark II.
Sell a car tuning, paint job, or vinyl group from your storefront.
Reach 88 mph in a DeLorean.
Post a time in every Rivals mode event.
Create a car tuning file for your car.
Create a paint job or vinyl group for your car.
Reach 240 mph in any car.
Complete the tenth year of Season Play.
Upload a movie to Forzamotorsport.net.
Fully explore any car in Autovista.
Complete the ninth year of Season Play.
Level 50 in Career
Share a car in your garage with your Car Club.
Complete the eighth year of Season Play.
Level 40 in Career
Visit the Message Center on at least five unique days.
Complete the seventh year of Season Play.
Complete the sixth year of Season Play.
Level 30 in Career
Earn a perfect Drift score.
Race and defeat an opponent in Rivals mode.
Complete a lap around the TopGear Test Track while driving a KIA cee'd.
Complete the fifth year of Season Play.
Level 20 in Career
Complete the third year of Season Play.
Earn a perfect Drafting score.
Complete the fourth year of Season Play.
Earn a perfect Speed score.
Level 10 in Career
Create or join a Car Club.
Complete the second year of Season Play.
Complete the first year of Season Play.
Knock down a gold bowling pin in Car Bowling.
Earn a perfect Pass score.
Create a custom playercard with badges and titles.
Level 1 in Career
Earn a perfect Turn score.
Import a file from Forza Motorsport 3.
Complete the very first race in the game.
Use Kinect to drive any car in Free Play.
Complete 5 online circuit races in the 1982 Porsche 911 Turbo 3.3.
Win online in the 1973 Porsche 911 Carrera RS.
Win online in the 2003 Porsche Carrera GT.
Complete 3 online circuit races in the 2007 Porsche 911 GT3 RS (997).
Earn 30,000CR in the 2007 Porsche 911 Turbo (997).
Earn 30,000CR in the 2008 Porsche #7 Penske Racing RS Spyder Evo.
Complete 3 online circuit races in the 2010 Porsche Panamera Turbo.
Complete 5 online circuit races in the 2010 Porsche 911 Sport Classic.
Win online in the 2011 Porsche #45 Flying Lizard 911 GT3-RSR (997).
Win online at the Nürburgring Nordschleife Full track in the 2012 Porsche 911 GT2 RS.