Theoretically, only cars that are set-up for 95 RON, or can adapt by having a knock sensor fitted, should be able to benefit. However, my personal experience is sharper response and smoother pickup than Tesco Value
I think Top Gear did a test which confirmed an increase in BHP on a couple of models so there is definately something in it
You now have a choice of:
Shell are also about to launch, or are in the process of launching, V Power, which is 99 RON
"They Do Ron-Ron, Yeah, They Do Ron-Ron"