Full list of all 62 Forza Motorsport 7 achievements worth 1,000 gamerscore. It takes around 120-150 hours to unlock all of the achievements on Xbox One.
Collected 700 cars
Completed a race on every track in Multiplayer
Fully Completed the Forza Driver's Cup Championship
Fully Completed the Breakout Championship
Collected 500 cars
Collected 300 cars
Fully Completed the Evolution Championship
Fully Completed the Masters Championship
Completed a race with every car from Porsche
Fully Completed the Seeker Championship
Completed all Showcase Events in the Forza Driver's Cup
Beat 10 Rivals while running with no Assists
Sold a car in the Auction House
Fully Completed the Domination Championship
Completed the Forza Driver's Cup
Completed the Masters Championship
Completed the Domination Championship
Earned 500,000 credits from Mods
Completed the Evolution Championship
Equipped and Fully Used 50 Mods
Completed the Spa-Francorchamps 100 showcase event with Extra Long Race Length enabled.
Completed the Breakout Championship
Finished an event and complete all challenges with 3 Legendary Mods
Completed 50 laps at night in Multiplayer
Completed 50 laps at night
Completed 300 laps in Multiplayer
Completed 100 laps in Multiplayer
Reached Car Collector Tier 8
Completed the Seeker Championship
Won a race with no Assists turned on in a Multiplayer race
Completed a race in the 2014 Ferrari FXX K on Mugello
Completed 50 laps in the rain in Multiplayer
Reached Car Collector Tier 7
Earned 50,000 credits from the community using your Design
Earned 50,000 credits from the community using your Tune
Unlock 100 Driver Gear suits
Unlock 50 Driver Gear suits
Collected 100 cars
Reached Car Collector Tier 6
Completed a race in the 1998 Porsche 911 GT1 Strassenversion on Maple Valley
Acquired 50 Mods
Shared one of your Tunes
Drove faster than 250 mph in any car
Shared a Replay
Shared a Photo
Created your own weather forecast in Freeplay
Won a race with Unbeatable Drivatar Difficulty
Entered Test Drive in any car
Used your first Mod
Reached Car Collector Tier 5
Completed a race in the 2017 Nissan GT-R on Suzuka
Started last and finished first in a Multiplayer race with 24 cars
Shared one of your Paints
Unlock 25 Driver Gear suits
Bought a car in the Auction House
Reached Car Collector Tier 4
Own the 2018 Porsche 911 GT2 RS
Unlock 10 Driver Gear suits
Completed a race in every Rain Weather Scenario
Completed your first race
Reached Car Collector Tier 2
Reached Car Collector Tier 3