How long have you driven your Elantra on one tank of gas?

466 miles yesterday. Had 3.5 litres left in the tank when I filled up.

By the way, the numbers that Hyundai, and other companies come up with, are not the absolute most that the car will get. The number is a conservative estimate based on tests in 2 different locations in the USA, each one with a different climate and elevation. When you're outside of those two test areas and scenarios, you can get better or worse mileage. It also takes into account driving styles; hence if you drive like an old man, you can get better numbers than advertised.

I thought that I read somewhere that the cars are tested in San Diego and somewhere else, like New England...I'll have to look that up and get back to you. I know that they are also tested in the lab, but I thought it was also in 2 differing cities.

In other news, I've just had my first post edited by James...at least first that I can remember.