The amount of search engine optimization (SEO) your auto repair website needs to get top search result position dependents on how competitive your online market is. If your website competition has little or no SEO, getting your auto repair website to place at the top of the search results is usually easy. On the other hand if you have got super aggressive competitors with websites SEO'd to the 9th degree getting your website onto a search engine's first page will take a lot more SEO work!
Auto repair SEO is like running from an angry bear. You don't need to run faster than the bear. You only need to run faster than the other guy (your competition)!
Likewise, automotive website SEO doesn't need to be extensive or state of the art for everyone. The auto repair SEO required on your auto repair website only needs to be slightly better than your closest competitor's website. Once your website places ahead of them for your desired keywords any more SEO work is a wasted effort (and $$$). Have a look at Robert Maxim's auto repair SEO services.