Full list of all 50 Forza Motorsport 3 achievements worth 1,000 gamerscore. It takes around 150-200 hours to unlock all of the achievements on Xbox 360.
Sell a car in the Auction House.
Sell a Tuning Setup, Design, or Vinyl Group from your storefront.
Win an auction by outbidding someone.
Achieve a gold trophy in every single race in the Event List in Season Play mode.
Own (at least) one car from every manufacturer.
Complete a Time Trial.
Buy something using the storefront.
Create a car tuning file for your car.
Complete the sixth year of Season Play.
Complete the fifth year of Season Play.
Reach Driver Level 50 in Season Play mode.
Level 45 in Season Play
Reach Driver Level 40 in Season Play mode.
Complete the fourth year of Season Play.
Race at every track location in the world.
Create a paint job or vinyl group.
Level 35 in Season Play
Reach Driver Level 30 in Season Play mode.
Level 25 in Season Play
Complete the third year of Season Play.
Reach Driver Level 20 in Season Play mode.
Complete your first Forza Motorsport movie.
Achieve Car Level 5 in Season Play mode.
Level 15 in Season Play
Complete the second year of Season Play.
Reach Driver Level 10 in Season Play mode.
Level 9 in Season Play
Level 8 in Season Play
Level 7 in Season Play
Achieve Car Level 4 in Season Play mode.
Level 6 in Season Play
Complete the first year of Season Play.
Level 5 in Season Play
Upload a photo or movie to Forzamotorsport.net.
Take a photo of your car.
Travel in excess of 200 mph.
Earn over 1,000 points in a single drift section.
Achieve Car Level 3 in Season Play mode.
Level 4 in Season Play
Complete your first weekend race in Season Play mode.
Level 3 in Season Play
Level 2 in Season Play
Achieve Car Level 2 in Season Play mode.
Complete your first weekday event in Season Play mode.
Level 1 in Season Play
Achieve Car Level 1 in Season Play mode.
Win a race using cockpit view.
Complete the very first race in the game.
Jump five feet.
Earn over 100,000 points in a single lap.