Official regional source Hyundai Sonata 2025
Regular Fuel Accepted Minimum 91 RON
Recommended 91 RON
Market Saudi Arabia / GCC
Engine 2.5L I4 / hybrid
Powertrain Internal combustion
Fuel type Gasoline
Ethanol E10
Fuel tank 60 L Source & Verification Hyundai Sonata Regional Owner's Manual & Specification
Last verified 2026-10-06 Turbo N Line trims may prefer 95 RON. Regular unleaded 91 RON or higher accepted.
What happens if I use a lower octane fuel? Do not use a grade below the stated minimum. A higher number is not automatically better unless the manufacturer says so.
Manufacturer verified Hyundai Sonata 2025 DN8
Regular Fuel Accepted Minimum 87 AKI
Recommended 87 AKI
Market United States
Engine Smartstream G2.5 GDi I4
Powertrain Internal combustion
Fuel type Gasoline
Ethanol E15
Fuel tank 60 L Source & Verification 2025 Hyundai Sonata Digital Owner's Manual (DN8)
Page Fuel requirements
Last verified 2026-10-06 Hyundai specifies 87 AKI (91 RON) or higher, a 60 L tank, and gasoline containing no more than 15% ethanol.
What happens if I use a lower octane fuel? Do not use a grade below the stated minimum. A higher number is not automatically better unless the manufacturer says so.