I typically drive my car until It is near empty. Yes, I know it's not good to do that. One time I was late driving to a funeral about an hour away by interstate. So, I told myself I would go get gas right after the service. Something upsetting happened at the funeral. I was beside myself after the service. I got back in my car and zoomed home on the freeway, oblivious to the gas gauge. Suddenly I looked at the dash and it said 0 miles to empty. I drove another 3 miles to a station. I have no idea how long at empty, but my rough estimate is probably 10 miles based on the M2E warnings it gave earlier.