The breakdown for FM6's 3000 points (in-game figure in brackets):
Badges Unlocked: 350pts (50)
Cars Owned: 250pts (50)
Days Played: 500pts (50)
Driver Level: 350pts (100)
Gamerscore: 500pts (1000)
Miles Driven: 350pts (2000)
Paid DLC Owned: 150pts (5)
Perfect Passes: 50pts (50)
Showcases Completed: 250pts (30)
Unique Mods Used: 250pts (50)
FM2 Score: 123/500
FM3 Score: 976/1000
FM4 Score: 2000/2000
FH1 Score: 2000/2000
FM5 Score: 2540/3000
FH2 Score: 3000/3000
F&F Score: 500/500
FM6 Score: 1095/3000
Current Forza Rewards Score: 12,234
Tier: 8
I should actually be a bit higher, since gamerscore is sitting at 0 for FM6, but I'm not too concerned
. Apparently I've already maxed out badges and cars owned, and I've put almost 800 miles in!