Factual error: Although taking place in North Dakota, the Jeep and cop car have the older Illinois plates.
Audio problem: When Tori finds the Leprechaun in Mr. O'Grady's wheelchair, she runs out of the room. We hear her crying in horror but her lips do not move at all.
Continuity mistake: When the man opens the locker, the leprechaun jumps out and kills him by pogo-sticking him to death. He never pogo's on anything but the man's chest, yet the victim has big bloody welps all over his face.
Continuity mistake: At the beginning of the movie when Danny grabs the gun to shoot the Leprechaun, he fires only two shots and has to reload but when he opens the gun chamber to reload, you can see that there are no used shells in the chamber.
Other mistake: After the Leprechaun has used the small car with the pitchfork and rammed the pick up truck, it rolls down the hill 3 or 4 times. The leprechaun opens the door and all 4 characters are not in the vehicle. They have not only managed to all exit the vehicle and hide behind a boulder but have all managed to not receive so much as a single scratch and Jennifer Aniston's hair is still perfectly brushed.
Revealing mistake: Just before the leprauchan claws out the eye from the police officer's corpse, the corpse's eyelid moves.
Visible crew/equipment: When the Leprechaun is in the wheelchair chasing Tori, the wheels from the camera dolly are reflected in the side of the wheelchair.
Visible crew/equipment: The wires that cause the suitcase to wobble are visible, especially when Mrs. O'Grady gets close to it.
Continuity mistake: The paint marks on Nathan's right arm change shape.
Continuity mistake: When Tori and Nathan are first in the diner, it is dark outside. When Alex and Ozzie join them in the next diner shot, it is still daylight outside.
