imv... what is it?

Look here: https://cargurus.helpscoutdocs.com/category/4-cargurus-faq

My answer is that it is a way to dissuade a private seller from using the Cargurus platform to sell their car. I'm sorry but this is a major flaw in the "IMV"and unfairly punishes a private seller. My vehicle was over $2000 difference to the downside from the same vehicle sold by a dealer. It is also misleading to a buyer who will miss out on the best deal if the IMV is highly weighted in their decision making. All in all it serves no one to post different values for the exact same commodity. This is a BIG FAIL IMHO. Cargurus i hope you are reading this. FIX IT

I think IMV is weighted in the dealers favor here on this site. My two listings had low IMV when there were very similar deals from dealers, with higher IMV.