I bought this book because I am in the market for a Jag and I am new to the make. I wanted some specifications, history, options, problem areas to look for ect. I was extremely disappointed. This book is very lacking in content. It only list a very very few specification for a few models and gives hardly any detail on options that were available through the years. The same could be said for any reviews on the cars. The XJ12 info was especialy lacking, and this happens to be a model of particular intrest to me. There was no mention of problem areas for this model, such as where they rust, what common mechanical problems they have ect. The last two books I have bought in this series were disappointments. From now on I will review the book more before I decide to throw money away.