Five years ago yesterday, I picked up my 2004 Prius, Package #7, Millenium Silver.
58.8 MPG lifetime
109.3 MPG best tank (with a little help from my friends)
39.9 MPG worst tank (don't ask)
Mostly I get around 60 MPG.
I have a 135 mile commute so I put on about 35,000 miles per year.
This car continues to amaze me. It has only been to the dealer once, to perform a handful of recalls. Other than that, I just change the oil every 20,000 miles or so, change the air filter a few times and change the tires when they get worn out. Still running on the original spark plugs, brakes, belt, hoses, coolant, 12V battery and HV battery. I changed the trans oil at 130k and just replaced the front bumper cover that lost a battle with tire debris laying on the interstate.
I briefly considered trading it in for a 2010, but I just can't justify it. I look forward to the Gen 4 Prius. By then, I should have over 300,000 miles on my 04. Maybe then. Maybe....