Supermarket fuel is derived from the same base components as any branded fuel.
It's the additional additives your paying for, or should I say overpaying for.
These additives cost around 0.24ppl, yet the premium markup tended to be 6-8ppl premium.
It is absolutely proven that these additives work, however that's a hefty 'Marketing markup'.
This has almost turned into an argument...
Put in what the hell you like. It'll run fine on 95 Ron, better on higher octane.
I know what's going in mine, my choice. No keyboard warrior will change that.
Make your own mind up.
Buys £35k car, quibbles about an extra £3.50 per tank on a performance fuel. Even if you didn't believe the science behind the benefits, why would you not want to fill a performance vehicle with a performance fuel? The owners manual even recommends it; the ability to run on low octane supermarket rubbish (which is inconsistent as it's purchased from whoever is the cheapest at the time) is just a failsafe for when a decent fuel is unavailable.
The mind boggles.
Fuel Octane never goes down well on a forum lol. Bit like discussing tyres.
My ep3 is on over 150k miles, i only use 95Ron fuel and it runs smooth like new. I agree though that if the car was turbo'd or the ECU was mapped for a higher octane then it would be a different story and the performance gains would actually be noticeably worth it.
My old mk2 XR2 used to love V-Power. Probably because it had no ecu or fuel injection, but it used to fly on that stuff!!