no, I'm talking about the fuel warning light that exists on all cars. It is a known fact that fuel consumption will be a part of GT4 for all cars. So far, I don't think anyone knows what exactly will happen when you run out of gas.
I guess its likely that the fuel consumption isn't part of the GT4 Build
Or a slightly nicer response... we here at GTP haven't managed to turn it on yet but one of our members had done a breakout and got the oil warning light to come on!!