Driving on low fuel could damage several components, including the fuel pump.
Driving at a near-empty fuel tank level could also damage the catalytic converter.
The fuel pump might suck the sludge settled at the bottom, clogging the fuel system.
Low fuel can lead to an inconsistent fuel supply, causing jerks.
If you get stuck in traffic or break down, low fuel worsens the situation.
Driving on low fuel can also negatively impact the mileage.
The recommendation is not to drive a vehicle with a nearly empty fuel tank.