Just with quick google search it seems your Scirocco has fuel filter. Best way to find out is go under the car and somewhere near rear wheel (left or right) and between fuel tank, there will be small plastic part stick to chasis with nice clamp. That will be getting one fuel line (thin metal tube) from fuel tank, and other fuel line going towards the engine. Your doubt was right as in some cars fuel filter is sitting inside the fuel tank or inside the fuel pump, but that's not the case in your car. Give a call to parts shop with your chasis number and ask for fuel filter, if they have one then this doubt is 100% clear.