23/07/2022
RON is the octane measure used globally and it's more efficient to produce and certify. 95 RON is roughly equivalent to 91-octane on the anti-knock index currently used in the United States. Unlike 91 premium fuel, 95 RON would not be a niche product reserved just for luxury cars.
Generally, fuels with a higher octane rating (e.g. RON97) are used in high-compression engines that have higher performance. Higher octane fuels are used for motor vehicles with higher compression ratio. As a general guideline, RON97 is usually recommended for motor vehicles with an engine capacity 2,500cc and above.