Below is the list of the Hitboxes used by each Car:
Breakout Hitbox
Animus GP
Breakout
Breakout Type S
Cyclone
Komodo
Samurai
Dominus Hitbox
'70 Dodge Charger R/T
‘89 Batmobile
Aftershock
Chikara/Chikara G1/Chikara GXT
DeLorean
Diestro
Dominus
Dominus GT
Ecto-1 (Ghostbusters)
Gazella GT (Hot Wheels)
Guardian/Guardian G1/Guardian GXT
Hotshot
Ice Charger
Imperator DT5
K.I.T.T. (Knight Rider)
Masamune
Maverick/Maverick G1/Maverick GXT
McLaren 570S
MR11 (Hot Wheels)
Nemesis
Peregrine TT
Ripper
Ronin/Ronin G1/Ronin GXT
Samus’ Gunship (Nintendo Exclusive)
Werewolf
Hybrid Hitbox
‘99 Nissan Skyline GT-R R34
Endo
Esper
Insidio
Jäger 619 RS
Nimbus
Venom
X-Devil
X-Devil MK2
Merc Hitbox
Battle Bus
Merc
Octane Hitbox
Armadillo (Xbox Exclusive)
Backfire
Bone Shaker
Fast 4WD (Hot Wheels)
Fennec
Gizmo
Grog
Harbinger/Harbinger GXT
Hogsticker (Xbox Exclusive)
Jurassic Jeep Wrangler
Luigi NSR (Nintendo Exclusive)
Marauder
Mario NSR (Nintendo Exclusive)
Mudcat/Mudcat G1/Mudcat GXT
Octane
Octane ZSR
Proteus
Road Hog
Road Hog XL
Scarab
Sweet Tooth (PlayStation Exclusive)
Takumi
Takumi RX-T
Triton
The Dark Knight Rises Tumbler
Twinzer
Vulcan
Zippy
Plank Hitbox
‘16 Batmobile
Artemis/Artemis G1/Artemis GXT
Centio
Mantis
Paladin
Sentinel
Twin Mill III