Dealer Authority | 929 followers on LinkedIn. Stand out from the crowd with custom digital advertising utilizing SEO, PPC, and Social Media. dealerauthority.com | Dealer Authority is a team of automotive digital marketing experts specializing in search engine optimization, social media, pay-per-click, and consulting. We work with dealerships that understand the importance of a strong digital strategy but don’t have the time or the resources in-house at the dealership.