New cars that are updated never get appreciated when newer cars that are updated push down the other cars, sometimes 2 or 3 pages back. I have noticed people usually view cars only on the first page, and when there is an uploading gap, they are usually lucky enough to get ranked.
Showroom 3 should have a new system where cars updated first are shown first, so for a certian amount of time (Like the time limit in the duel) those cars are shown at the top of the list, newer cars are then shown once the previous cars have reached their time limit. This allows an equal amount of time for each car to be shown and rated fairly.