In the fuel tank. You can see it through a panel in the floor behind the rear seat, but to get at it you have to remove the fuel tank.
There is no fuel filter except in the fuel motor inside the tank. You don't need to change fuel filter in this model.
2003 hyundai accent diagram
On a 2002 Hyundai XG350, the fuel filter is located along the fuel line, typically mounted under the vehicle. It is often found near the fuel tank or along the frame rail. To access it, you may need to lift the car and remove any protective covers. Always refer to the vehicle's service manual for specific details and safety precautions when replacing the fuel filter.
The 2003 Hyundai Sonata runs on regular unleaded.
The 2003 Hyundai Accent runs on regular unleaded.
The 2003 Hyundai Elantra runs on regular unleaded.
fuel tank
In the fuel tank
From a Hyundai dealer technician- there is no serviceable fuel filter on the 2003 Sonata. The filter is a "lifetime" strainer on the fuel pump in the fuel tank. It would be replaced with the replacement of the fuel pump only. how do you replace fuel pump on the 2003 sonata
The 2003 Hyundai Santa-FE runs on regular unleaded.
under the back seat in the fuel tank
Left side of the fuel rail.