List of things the 03 turtles have stolen:
Their first car — stolen from the purple dragons
That piece of heart underwear Mikey slammed into — stolen from a clothesline and thrown off the roof
The helicopter — stolen from the shredder
A tank — stolen from some soldiers
Those cloaks that are used when making a Mikey edit — stolen from a clothesline(?)
That convertible space car — stolen from an alley
Multiple pieces of cleaning equipment — stolen from the janitors closet of a prison
Several guns — stolen from some soldiers
Prime Leader Zanramon’s personal space cruiser — stolen from the hangar to escape
Prime Leader Zanramon’s personal space cruiser 2.0 — stolen from the hangar for shits and giggles
A doom buggy — stolen from conspiracy theorists/terrorists/H.A.T.E. survivalists
Two Junklantist guard suits — stolen from two unconscious guards
A train minus the conductor’s carriage — stolen from the EDF
The Heart of Tengu — stolen from The Foot
A briefcase full of money — stolen from Hun, Touch and Go
An old brown van — stolen from a group of robbers dressed as cowboys
(SAINW) A Karai-bot — stolen from The Foot
The Sword of Tengu — stolen from The Shredder
That truck filled with children’s toys for orphans — stolen by Mikey from three guys who stole it from some other guy
A child sized outfit big enough to fit a mutant turtle — stolen from clotheslines(?)
From this we can deduce that the turtles really like forms of grand theft auto, of this list 10 of said stolen items being vehicles
And of course an honorary mention:
That time they got accused of kidnapping the president of the United States of America
