Three types of Fuel suit the CUPRA...
V Power,
V Power,
Or
V Power !!! (Lol !)
But seriously, anything else is risky in my view.
Why ?
Only yesterday someone posted that they were having issues with supermarket fuel in a Leon FR in my own area...Supermarkets use various cheap unbranded lower grade fuels, and focus only on profit...they don't worry much about the purity of the fuel, condition of the tanks, tankers, or anything else.
After all, If you owned a shiny new Ferrari F458, you wouldn't put Asda unleaded in it would you ?