It makes actually. Usually spoilers are used to help aerodinamics and something to do with downforce or something. But in novadays they just get used to change car look.
And actually, you dont know what is under the hood of his version of Scirocco.
You missed a spot then :P It's right next to the headlights on the texture - but you could also just give those are a completely new material. Wouldn't matter (I did that, not because I was lazy but because I wanted to).