Here is the full list of all 57 Forza Motorsport achievements.
Reach Car Level 50 in 10 cars
Complete 4 Tours in Career Mode
Swap an engine in any car
Complete 3 Tours in Career Mode
Gain at least 12 positions in any Multiplayer race
Complete 2 Tours in Career Mode
Apply a Wide Body conversion to any car
Complete 300 laps in Multiplayer
Finish in top three of a series with a stock car in Builders Cup
Share one of your Tunes
Complete 50 laps at night
Win a Timed Race in Free Play
Beat 20 Rivals
Beat 10 Rivals
Share a Photo
Share one of your Designs
Reach Car Level 50 in any car
Complete 1 Tour in Career Mode
Complete 50 laps in the rain
Complete 100 laps in Multiplayer
Beat 5 Rivals
Post a lap time on any track in Rivals Time Attack
Hold an S Safety Rating across 5 consecutive Featured Multiplayer events
Post the best Qualifying Lap Time in a Featured Multiplayer event
Complete a clean Qualifying lap in Featured Multiplayer
Complete your first Featured Multiplayer Event
Earn a spot on the podium in Featured Multiplayer
Maintain a speed of 180mph or higher for 3 seconds
Finish a race with no more than one Fuel Lap left in your car
Change your tires during a race to use a different tire compound
Reach Car Level 25 in any car
Complete 10 races with AI set to the fastest difficulty
Complete a Quick Race in Free Play
Create and complete a race in the rain in Free Play
Complete 1 Series in Career Mode
Buy your first car
Complete the Builders Cup Intro Series
Make an upgrade to any car
Change your Fuel and Tire setup for the first time
Finish with no penalty with full Forza Race Regulations enabled
Score a perfect 10 on any Track Segment
Score a 9 or better on any Track Segment
Receive your first gift car
Change your Driver Suit
Complete your first race
Earn 10,000 credits from the community using your Design
Earn 10,000 credits from the community using your Tune
Share a Replay
Reach max brand discount by owning 5 level 50 cars from a manufacturer
Reach Car Level 50 in 30 cars
Hold an S Safety Rating across 10 consecutive Featured Multiplayer events
Complete a lap at sunset at Spa Francorchamps
Complete a race in the 2021 Porsche 911 GT3 on the Kyalami Grand Prix Circuit
Complete a race in a 2023 Cadillac Cadillac Racing V-Series.R on Le Mans Full Circuit
Complete a race in the 2020 Toyota GR Supra on the Hakone Club Circuit
Complete a race in the 2020 Ferrari Roma on the Mugello Full Circuit
Complete a race in the 1973 Pontiac Firebird Trans Am SD-455 on the Eaglerock Club Circuit