Please let me first apologize if this has been covered elsewhere. I'm familiar with vBulletin forums from COTH and know the search function leaves a lot to be desired. But I ran a few different search terms and used google and I can't find this issue relating to a Gen III. Let me also apologize if I put this in the wrong area. I wanted it to be seen by some of the most knowledgeable folks who have lots of Prius experience so I figured the main forum would get me that. Tonight, I filled up at a gas station I have never used before with my Prius, but I have used before with cars I had before the Prius. Never any issues with filling up. I bought my 2010 Prius used on December 30, 2011 with 43179 miles on it. I bought it from a Toyota dealer who had sold it directly to the first owner. In the roughly 4k miles I've put on the car, I've never had this happen before. My mileage for the tank was 422.8 and my estimated (by the car) MPG was 48.4. I filled up setting it on slow (I'm pretty sure, but honestly it was pouring rain and I was really tired after getting up at 3:30 for a horse show) and stopped filling when it clicked off. It took 6.994 gallons. I got back in the car thinking that was really, really low because my other tanks had been around 350-390 with estimated MPGs between 42-47 and those tanks took between 8-9 gallons. I got in the car and sure enough...the car had only filled to 9 bars. I got back out and pumped again. It shut off almost immediately, but I kept pushing a few more times. I put another .652 gallons in it. I got back in the car and it still only read 9 bars. I decided not to put anymore in it because I didn't want to risk overflowing the tank not being able to tell which was right and which was wrong. Has anyone had this happen before with a Gen III? I've read lots of issues on the Gen II, but not the Gen III. I thought the tank bladder had been removed on the Gen III. Hubby is a Saturn/GM mechanic and he thought maybe it was a vent issue? I do have an extended warranty with a $100 deductible, but I'm not sure what I should do. I hate to waste $100 for them to tell me there's nothing they can do. Any suggestions? Please and much thanks in advance!