I filled my car up last week at my local Shell station and half way through, I realised that I was filling with Shell V Power instead of the normal (E10) petrol by mistake. £1.65 per litre!
Never mind I thought, at least I will see a boost in fuel economy I thought.
Nothing of the sort. I am averaging exactly the same economy at around 39mpg with this fuel as I do normally on my commute.
So, in my opinion at least, ignore the hype that surrounds the so called premium fuels, as they seem no different to the standard fuels, other than in price!