Julio,
The quick answer is both and maybe more. I am listing some areas you may want to look into expecting you to use on line resources to get the details.
I would suggest you use the Moz Pro tool to fix any on page issues. Then i would then use the page grader to make sure you have A grade pages for each critical key word sets. I would use the key word tracking tool in Moz Pro to validate that these URLs are validating on the key word tracking tool.
On the local side I would be sure to embed proper schema into the page as well as GPS coordinates. You should also utilize the Moz local tool as suggested above. I would also make sure you upload relevant photos into G+ with Alt text that includes the key word strings you are targeting.
I would write relevant blogs including photos over time (months) that integrate these key word strings. As you do these be sure to post these to Google Plus.
I might also suggest a Pinterest page with Photos of your vehicles with good Alt text. This is also a great way to do brochures with text describing each photo.
These are the quick and dirty things you can do.
A longer term project is to utilize Moz open site explorer to understand your competitive link picture and add relevant links until you are in line with the competition.
All of this may require some research and time on your part. Be sure to search these forums as well as use the on line educational resources to learn about these different ways to increase your visibility.
Ron