Anything that can be produced can be produced wrong, and in most collecting hobbies involving manufacturing on a large scale, production errors are a specialty. Hot Wheels collecting is no exception. Collectors looking for something to make their collection unique seek out errors.

This guide discusses the various types of production line errors, with pictures from my collection. It is separated into several sections, which you can reach via the links below.

Is This An Error?
Pre-Production Errors
Packaging Errors
Wheel Errors
Missing Pieces
Picasso!
Values
Photo Gallery - All of the pictures, including new items!

I would like to thank all of the people who have given, traded, and sold me error cars. This guide is dedicated to you folks.