When Maggie buys Herbie from Crazy Dave, she pays $75, which was the same amount of money that Jim Douglas paid to buy him in the original Un amour de Coccinelle (1968).
For this film's "sneak preview screening" day, (on Sunday, June 19, 2005), Disney offered free tickets to anyone named Herbert or any derivation thereof (Herb, Herbie, et cetera).
Director Angela Robinson said in the commentary that she purposely left hidden crew equipment and cheap camera tricks in the film to give Herbie fans something to look for that was fun, and also just to simply aggravate her editor, who practically begged her to fix the problems before the film was released.
Cameo: (Dodge Charger from Fast and Furious (2001)) When Maggie is pretending to race in a stock car in the junkyard, it's the same Dodge Charger from the end of Fast and Furious (2001). You can tell by the damage to the left fender and the roof.