Hey Nick! Thanks for your reply! Just wanted to follow up: has the gas tank volume gotten any better for you? When my tank needle is below Empty in my 2012 Pro4X (and my Drive to Empty miles is blinking at 0 miles on the gauge), I can only get 16.5 gallons of gas in my tank, sounds like you have had a similar situation? It's frustrating b/c the stated tank volume for my/our car is 21 gallons, and my previous car was 2006 Xterra which filled to approx 20 gallons when on empty. I hate that this tank capacity seems to be smaller (and that I have to stop and get gas more frequently), and want to try and address it with Nissan (in my visits to Nissan, they have confirmed that I have a 21 gallon tank, but think that the "reserve/waste" volume is perhaps the missing 5 gallons, when in most other cars that volume is only 1+ gallons of space). Thanks for any help/context you can provide, I appreciate it! -Adolphi