Now I know what you’re thinking. (Maybe) But I am reviewing them both without making it Game Review #5 and #6 because they are very similar games.
The only things different about the two games is that Mario Kart 8 Deluxe has more characters, more vehicles, more wheels, more Hang-glides, more items and battle arenas (Instead of some of the tracks). The New characters in Mario Kart 8 Deluxe are Dry Bones, Bowser Jr, Gold Mario (a different colour of Metal Mario), King boo, Inkling Boy and inkling girl. (Inkling boy and girl both have 3 colours)
There are 4 Modes in Mario kart 8 and Mario Kart 8 Deluxe. Grand Prix (available in single player and multiplayer), Time Trial (Only in single player), Vs Race (available in single player and multiplayer) and Battle (available in single player and multiplayer). In Grand Prix you are put into a cup which is 4 races back to back. Here are all of the cups and the track in them.
Mario Kart Stadium
Sweet Sweet Canyon
Shy Guy Falls
Moo Moo Meadows
Cheep Cheep Beach
Dry Dry Desert
Donut Plains 3
Piranha Plan Slide
Egg Cup (DLC for Wii u)
Excitebike Arena (based on Excitebike)
Mute City (based on F-Zero)
Triforce Cup (DLC for Wii u)
Wario's Gold Mine
Ice Ice Outpost
Hyrule Circult (based on Legend of Zelda)
Crossing Cup (DLC for Wii u)
Animal Crossing (based on Animal Crossing)
Bell Cup (DLC for Wii u)
Neo Bowser City
Super Bell Subway
Big Blue (based on F-Zero)
The tracks Mount Wario and Rainbow Road (The Rainbow Road in the Lightning Cup) are a different type of track because instead of doing 3 laps of the track you must go to 3 different parts of the track.
In Time Trial you must pick a track and race a ghost created by people across the world, there are no items except 3 mushrooms (Speed is the key if you want to win)
In Vs Race all you do is pick a character, vehicle, wheels, hang-glider, rules and track and race.