Car tanks are plastic nowadays, there's a fuel fiter and they're pretty good at managing surge/sloshing. Many even reduce power when the fuel light is on for ex

Car tanks are plastic nowadays, there's a fuel fiter and they're pretty good at managing surge/sloshing. Many even reduce power when the fuel light is on for example. You probably shouldn't drive aggressively with the fuel light on but even the user manuals usually recommend refuelling at about the 1/4 mark mentioning the potential pump issue, the danger of running out of fuel entirely and that if the engine is sputtering systems like power anything, ESC, TC, etc might not work correctly. A full tank doesn't hurt but nowadays if you're not being a mong you can cruise with the fuel light on without damaging the car in any way. Edit: Or at least way less than bad shifting, lugging, not waiting for it to warm up, not letting turbos cool down, etc. The fuel thing is one of those things I hear a lot but then it comes from people (not you, don't know you) who start their car after sitting in a parking lot for an hour and immediately do a pull or hoon around all the way to the parking spot and immediately kill the engine when they stop, etc. Triggers my mechanical sympathy 'tism.