While driving your vehicle on low fuel or an empty tank can damage your ride or even lead to a crash, it’s still nice to know how far you can go when the empty light comes on. Most automobile manufacturers build in about a gallon of reserve fuel beyond the “empty” line. But if your daily commute is only a handful of roundtrip miles, some cars can go for days on ’empty’. To see how far your car can go when it’s out of gas, visit TankOnEmpty.com.