Instruct: Classify Amazon reviews into positive or negative sentiment
Query: worst purchase ever

I am very glad that I spent very little on this book. It was a waste of what I did spend. One would think, that by looking at the cover and title, that this book would be about actually working on your car. It is not. It basically tells you to take your car to the mechanic every other page. I was very excited when I first opened the book, and flipped through the index, and it had a section titled "DIY: clean your fuel injectors" I was wanting to do this so I flipped to the corresponding page. It described how to pour injector cleaner into the gas tank.I kept on flipping through, and found more wastes of time,and even some incorrect information.I used to own a copy of "Auto Repair for Dummies" I intended to order that, but ordered this instead because it was cheaper. Auto Repair for Dummies tells you how to work on your own car so you can avoid most expensive mechanic fees. Do not waste your time on this book! BLEH