It'd be nice to have a page like the browse vehicles (http://www.fuelly.com/car/), with an average mpg rating of each car (all the users avg mpg added, and divided by the amount of users) next to the car.
I know I could go to each manufacturer's website, and search each car type to see how much it's rated fuel consumption is; but since this site is about fuel, and is not aimed towards a certain vehicle type or brand, it'd be nice to find a feat like this on this site!
Like if I want to buy a new or second hand car, with a good mpg rating, I could get that info in a blink on a site like this!
Well, we are careful not to list things in order of MPG for fear of people gaming the site and faking their data. The "browse vehicles" page is pretty busy as well, and adding a number next to every single model could make for a pretty messy page.
I've bought a new car based on Fuelly data, and the fuel economy was a big factor, but I narrowed down my choices to a handful of several options and looked up those models here on the site. I don't know if people would really shop for new cars based on fuel economy alone.