Have never let my tank get much less than quarter full ( on gauge) and normally fill up at around half full - mainly because ( a Jocko would say ) a car without fuel is only good for keeping chickens in, and service stations seems to be getting fewer and further apart - if you are going anywhere in snow always make sure you have plenty of fuel, because the extra weight gives more grip ( especially with Honda having tank towards front of car ) and if you get stuck running the engine may keep you warm enough to keep you alive...............