1995 and 1996 Sportages use a fuel filter with flare nut fittings. Not sure about 1997. 1998 - 2002 use a fuel filter with push on fittings. Make sure you get the right filter for your year Sportage.

The push on fittings can be a real PITA to remove. First, you need to relieve the fuel pressure. The safest and easiest way to do this is as follows:

Get to the fuel pump access plate under the rear seat. Once you remove the cover unplug the fuel pump harness with the engine idling. Allow the engine to stall. Turn off the ignition then reconnect the harness. Do NOT monkey with the fuel pump fuse or fuel pump relay. Leave them alone or else you'll have problems later on.

Once you relieve the pressure you can remove the fuel filter. Depress the tabs on the fuel line and push TOWARDS the filter. The fuel line should pop off. You can use an adjustable wrench to depress the tabs but be careful or you'll damage the fitting. Remove the old fuel filter. Install the new one. Push the fuel lines back on until they snap into place. Start the engine and check for leaks.