Hyundai Sonata gas tank reading issue requiring manual mileage tracking on Hyundai Sonata

Some Hyundai Sonata owners report experiencing gas tank reading issues, such as inaccurate fuel gauge readings that can suddenly change, leading to confusion about fuel levels. This problem may stem from a faulty fuel sender unit, which can often be replaced for around $70 to restore proper functionality. In light of these issues, many owners find it helpful to manually track fuel consumption and mileage to obtain a more reliable measure of their vehicle's MPG. Additionally, some owners encounter common gas tank problems, such as slow filling or vent hose clogs, which can further contribute to inaccurate fuel level indications. By addressing these concerns and implementing manual tracking, owners can better understand their vehicle's fuel consumption and range between fill-ups.