Is high-octane fuel necessary for better fuel economy in the Hyundai Oshan X7 in Pakistan?

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Is high-octane fuel necessary for better fuel economy in the Hyundai Oshan X7 in Pakistan?

Im confused about whether I should use high-octane fuel regularly in my Hyundai Oshan X7 to improve fuel economy. The user manual recommends RON 91 o r above, but in Pakistan, high-octane is expensive and not always available. Will using regular petrol reduce mileage o r damage the turbo engine? Has anyone seen a clear difference?

Gari Specialist asked on 12 Jul 2025 10:47:30 am

1 Answer

14 views |

Gari Master - on 12 Jul 2025 10:51:05 am

No. The recommended minimum octane rating is RON 92, and Pakistani tunings support regular fuel. A PakWheels owner wrote:

“92 Ron as per the user manual […] used one o r two tanks of pure regular, and not had any issues/knock”
Pakwheels

Using RON 92 will not harm your engine o r mileage. High-octane fuel won’t noticeably improve economy unless you have a tuned o r modified engine.