Here is the full list of all 40 NASCAR 14 achievements worth 1,000 gamerscore.
Make it to pit road with a flat tire
Win a race with the HUD turned off
Start and finish a race without any driving assists
Pass a total of 250 cars
Drive as 10 different drivers
Win a race after Qualifying first and leading the most laps
Run a custom tuning setup in a race
Be the Lucky Dog driver in a race
Be involved in a wreck at Talladega
Qualify on Pole 20 times
DNF from a race by critically damaging your car
Win a race while driving a Chevy
Win a race while driving a Ford
Win a race while driving a Toyota
Sign 10 Sponsors to your car
Research everything in the R&D department
Invest in all areas of the Race Shop
Win the Sprint Cup in Career
Win the Sprint Cup in Career on at least 90% difficulty
Finish your first Sprint Cup Season in Career
In Career, win a race using only refurbished parts
Finish a full season with over 2,400 points
Finish all the 2013 Highlights with at least a Bronze award
Finish all the 2013 Highlights with at least a Silver award
Finish all the 2013 Highlights with at least a Gold award
Win a League Season
Take part in an Online Race
Win your first Online Race
Win 10 Online Races
Win 20 Online Races
Participate in 50 Online Races
Participate in 100 Online Races
Save an Online Replay
Make a custom brush in the Paint Booth
Create a custom paint scheme
Take a picture using Photo Mode
Win the Sprint Cup in Chase Mode
Win the Sprint Cup in Single Season Mode
Win the All-Star Race
Run 10 laps in a single Track Testing session