Probably.

COYP

The fuel is exactly the same but some put more additives in than others.

It's more likely that the difference is to do with driving style, traffic conditions and even the weather

He sounds like a socialist petrol sharer.

COYP

There is very little difference between comparable (98 or 95) petrol from one supplier to the next as far as I know. The specs are pretty strict. There may be some additives but I don't believe they'd make a material difference from one supplier to the next.

The specs change from summer to winter for Octanes and gasoline as a fuel evaporates very fast too - even in tank - so weather would make a difference. One other thing, you can lose gasoline the faster you fill up, especially in warm weather.

If you want to live in a world full of kindness, respect and love, try to show these qualities.

Shouldn’t make a difference as others have said

Supreme is higher octane (97 or 98 RON) and should give at least 5% better consumption

It also has less or no Ethanol. Unleaded is 5% ethanol which degrades if left in a tank and will eventually melt plastic tanks, as found in some motorcycles (like mine).

i tell you its all a bloody stitch up.

i put 30 quid of petrol in me 1988 Jaguar Daimler 4.5 litre city runabout and the fecker was nearly dry by the time i drove 300 yards.

a few days later i took the 2018 fiat panda the missus drives, put 30 quid in the tank and guess what ? drove from beckenham to f...cking timbucktoo with petrol to spare. its sex discrimination. bloody prejudiced against old balding fat blokes in favour of young fit birds...its not right, i tell ya, not right at all.

bloody stitch up

Eze Peasy at Anfield....