The original Mario Kart 8 on Wii U featured several unlockable Mii costumes for scanning specific Amiibo figures. (Mario, Yoshi, Pac Man, etc)
Are these Amiibo costumes still present in Mario Kart 8 Deluxe? If so, were any new costumes added?
Yes, according to Nintendo they are still there, and that site lists the Amiibo that are compatible. This site breaks down which amiibo unlocks which suit.
For reference, here is the suit list for Mario Kart 8.
Old Suits (all of Mario Kart 8's suits are present):
Mario
Luigi
Peach
- Yoshi
- Donkey Kong
- Link
- Captain Falcon
- Kirby
- Samus
- Fox
- Toad
- Bowser
- Wario
- Rosalina
- Pikmin
- Animal Crossing
- Mega Man
- Pac-Man
- Sonic
New for Mario Kart 8 Deluxe:
- Splatoon
