Written for the do-it-yourselfer, good enough for the pro! Find hidden rust, spot crash damage, detect body filler, size up a car with a 10-minute walk-around, find mechanical problems, road-test the vehicle, plus checklists to insure you get what you pay for.
From Wikipedia: The Haynes Owner's Workshop Manuals (commonly known as simply Haynes Manuals) are a series of practical manuals from the Haynes Publishing Group aimed at both DIY enthusiasts and professional garage mechanics. The series primarily focuses upon the maintenance and repair of automotive vehicles, covering a wide range of makes and models (300 models of car and 130 models of motorcycle), but it also includes manuals in the same style for domestic appliances and personal computers, digital photography and model railways, men and babies, sex, and women. The last four were made slightly tongue in cheek, but have proved very popular.
I laughed at this because the picture are so outdated. That being said, it has some good general information about what to look for a new car. It's flaw is it might be a little too detailed. It's info overload.