If a car shows "no price analysis" is that a red flag?

Possibly an insurance auctioned vehicle, or in some areas it could have a Salvage Title, usually issued after a car has been involved in an accident and acquired by an insurance company or salvage yard, otherwise, the vehicle may have had other history data that severely affects it's market value. I would have a VIN check done before purchase.

Generally no price analysis will come if the vehicle has been damaged, has options that make it a "customized" vehicle such as a lift kit or handicap accessibility, there aren't enough of that vehicle around to form a price analysis, OR simply the price on the car is either so high, or so low, that it cannot offer an analysis because it is so far off compared to other vehicles.

We only calculate IMV for used cars. A vehicle may be listed as 'No Price Analysis" if: -There are not enough of the same vehicles to compare it to within the same geographical location -No mileage is listed -It is a write-off category -It is a customized vehicle