So my 2014 Cupra has been very good and I have not had any rattles to speak off. Today I fitted some flappy paddle extensions and went for a drive to test them out. My first rattle in the car, nothing to do with the paddles it was coming from passenger side. Did some investigations and could not work out what it was. Got home and realised what a plonker i had been. bottle of fizzy water sitting on passenger seat with the top not fully down so as it was shaken it made a noise. hmmm no more modding cars for me.