I filled up a Skoda the other day with a VW group FSI petrol engine. (I was on vacation in UK) The petrol flap said "Premium unleaded only, at least 95 RON". In UK even the cheapest ($9/gallon) supermarket petrol is 95 RON.
Back home in Indonesia I fill up with $2.50 per gallon supposedly 88 octane. 20% of the goverment budget is spent subsidising my petrol. No pinging.
BagusJeep lives in Bali.
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE