The NASCAR Expansion Add-on for Forza Motorsport 6 has 16 achievements worth 210 gamerscore.
Complete a lap of Homestead in under 30.5 seconds
Complete the full NASCAR World Tour
Drive 50 miles in Team Penske NASCAR models
Finish The Road to Le Mans Expedition
Drive 50 miles in Chip Ganassi Racing NASCAR models
Drive 50 miles in Joe Gibbs Racing NASCAR models
Finish the One Lap of America Expedition
Drive 50 miles in Stewart-Haas Racing NASCAR models
Finish the Passport to the World Expedition
Finish the NASCAR Icons Tour Expedition
Drive 50 miles in Hendrick Motorsports NASCAR models
Complete 1 NASCAR Showcase Event
Finish your first NASCAR race
Race in a NASCAR multiplayer league
Race in a NASCAR multiplayer hopper
Complete all 10 NASCAR Showcase events