99RON 142.9/l as apposed to 136.9/l for normal at my local.
Filled up with it. Did notice a wee difference after completely empty to a full tank. Response always picks up better on more expensive fuel. Deffo difference and not placebo. I can't compare to old V-Power tbh just notice the usual difference.
Filled to the absolute brim for an Alton Towers trip tomorrow so will see what it does for MPG.