Has anyone filled their Prius C to the top of the filler neck, and if so how many gallons did it take after the auto shut off on the pump clicked off. On our Prius our tank can still hold about 2.1 gallons or so after auto click-off and filled to the top of the filler neck so you can see standing fuel. Factory tank capacity is listed at 11.9 gallons but true tank capacity is more closer to 14 gallons or so. I know, I know, that this practice is considered unsafe and can cause severe engine damage. But true reports on this are far and few between or nonexistent. But that aside I am just looking for the true tank capacity of the Prius C which I believe is factory listed at 9.5 gallons or so. .