2010 Prius has alot of problems. Has 8000 miles. The last 8 tanks of gas have shown mpgs to to range fom 31mpg to 37mpg. This happened after the car power surged on its own going up a hill. Have been to 2 dealers and both tell me this is normal. When I bring up I was getting 48.6 on the same trips, I'm told that the gas tank has a bladder and that you can't rely on mpg because of barometric pressure. So I've called Toyota "we care" 3 times and they have told me they'd get back within 24 hours. I haven't heard a thing. I'm also having trouble with the EV mode not working properly and brake issues. It seems Toyota is great as long as you don't have a problem.