The short answer is yes. You can drive with a broken fuel gauge, but it will be more inconvenient and a bit riskier than if you had a working one. Driving with a broken fuel gauge can lead to two main problems: running out of gas and running over your budget because you fill up too often. Running out of gas is the more severe problem of the two. If you run out of gas, your car will stop operating, and you'll be stuck in the middle of the road or wherever you happen to be at that moment. In some areas, this might not be terrible; in others, it could put you or your passengers in danger. The other problem is that it becomes difficult to know how much to spend on gas when you don't know exactly how much you've used. Too little, and you're going backward; too much, and you're wasting money that could be spent elsewhere.