How does your website look? Is it well designed, easy to navigate, populated with a ton of great content? Now how does it look on the inside rather than the outside? All of those things are very important to automotive SEO but what's inside could be just as important. The way your site has been build and coded on the inside might not make any difference to you and me but Google will definitely notice.
For the rest of the story on how to do an SEO audit for your site head over to Wikimotive's Blog.