2.5 Gallons Left On Empty
I've done this several time now in my 2019 1.5T AWD CRV. The gauge will read empty and then I'm able to put in about 11.5ish gallons of gas at the pump. Manual tells me it's a 14 gallon tank which leaves 2.5 gallons in there after the dashboard officially tells you she's empty. I generally get around 28-30mpg so in a tank on empty scenario I expect to have around 60-70 miles left to find a station.