Continuity mistake: When Jingle, Jangle, and Mrs. Claus pay a visit to Mother Nature, Mother Nature calls her sons beside her - Snow Miser and Heat Miser. She then turns to Snow Miser and asks him to allow a little snow fall in the South, and then turns to his brother, Heat Miser, and asks to allow just "one Spring day at the North Pole." The words are correct dialog, but she should have said each of those lines to the OTHER brother. (00:39:40)
Continuity mistake: When the girl is driving the truck, you can plainly see the front bumper get bent, but a few scenes later it is straight again.
Continuity mistake: When Nicole takes Whitfield for his first ride in Herbie, the car rears up onto its back wheels. But in the very next shot of Whitfield's startled reaction, the rear-screen projection of the street behind them is footage taken from a level view, not an elevated one. (00:15:50)
Other mistake: When the Vikings are chasing the main characters in the boats, the Vikings' ship isn't moving although they are still rowing.
Factual error: The film is set in the 1920's. When the policeman appears towards the end of the film on his helmet is a post-1952 helmet plate with the crown of Queen Elizabeth II.