If your dealership’s goal on Instagram is to ultimately make sales. There are 3 Big Time Strategies to use:
 
1. Promote Your Brand Where Shoppers are at:
If you are running specials or giveaways, definitely post them on Instagram. Also, consider running an Instagram-only promotion to show your followers some extra attention.
Although It can be tough to track conversions from Instagram since you can’t include a hyperlink to your content in an Instagram post, that does not mean you should shy away from promoting sales.
Customers who are interested will follow up by visiting your website, stopping by your store, or simply commenting on the Instagram post.
2. Right Message, Right Person at the Right Time
Besides what you post, think of when you post and who you post to
Consider peak times throughout the day to post your content. To do this, identify who your ideal target audience is for individual posts. 
For example, individuals who work during the day may check their phone in the early morning, mid-afternoon, and evening.
The biggest factor in your success on Instagram can be summed up in one word: activity. You must be active on Instagram in order for leads to want to follow your brand and interact with your content.
3. Engage Customers with Instagram Ads
While running a successful Instagram account is a great way to build an audience of loyal enthusiasts for your brand, Instagram ads are focused on converting leads.