This book in your glovebox is filled with helpful information By Benjamin Preston Although it might be as long as a novel, your car’s owner’s manual isn’t exactly a page-turner. But if you haven’t ...

In our tests, we've found that in some cars a manual transmission can improve gas mileage by a significant 2 to 5 mpg, compared with an automatic, and can cut a car's price by $800 to $1,200.