Here is the full list of all 62 NASCAR Heat 3 achievements.
Maxed out all stats on 1 employee (any series)
Hired the maximum number of employees (any series)
Owned the maximum number of cars (any series)
Won 25 races
Was the Split Screen champion after 4 races
Won a race at every dirt track
Won a Split Screen race
Raced in the NASCAR Camping World Truck series on a team
Won an Xtreme Dirt championship
Won the Xtreme Dirt series playoffs
Completed one career season
Completed an Xtreme Dirt season
Maxed out a single stat on an employee
Maxed out all departments (any series)
Maxed out a single department
Earned a spot in the Xtreme Dirt playoffs
Won 10 races
Got a rival
Won a race at every super speedway track
Completed a challenge
Completed 10 Multiplayer races
Trained your first employee
Raced in the Xtreme Dirt series on a team
Hired your first employee
Won a race with a 100% race length
Won a race in Career
Completed a race with a 100% race length
Created a custom car paintjob
Created a character
Completed a Multiplayer race
Won a Multiplayer race
Won a race
Won 56 races
Won 77 races
Won 94 races
Won 200 races
Raced at every track
Won a race at every road track
Won a race at every short track
Won a race at every speedway track
Completed a NASCAR Camping World Truck season
Completed a full NASCAR Xfinity season
Completed a full Monster Energy NASCAR cup season
Won a NASCAR Camping World Truck championship
Won a NASCAR Xfinity championship
Won a Monster Energy NASCAR championship
Won the NASCAR Camping World Truck playoffs
Won the NASCAR Xfinity playoffs
Won the Monster Energy NASCAR playoffs
Got a friend
Completed 5 career seasons
Completed 10 career seasons
Earned a spot in the NASCAR Camping World Truck playoffs
Earned a spot in the NASCAR Xfinity playoffs
Earned a spot in the Monster Energy NASCASR playoffs
Raced in the NASCAR Xfinity series on a team
Raced in the Monster Energy NASCAR series on a team
Earned 50 million dollars
Completed half of the challenges
Completed all challenges
Won 10 Multiplayer races
Earned a badge in NASCAR Heat Champions