Hyundai Kona Hybrid 2023 Owner's Manual page 13

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Do not use methanol
Fuels containing methanol (wood alcohol) should not be used in your vehicle. This type
of fuel can reduce vehicle performance and damage components of the fuel system,
engine control system and emission control system.
Fuel Additives
HYUNDAI recommends that you use unleaded gasoline which has an octane rating of
RON (Research Octane Number) 95/AKI (Anti Knock Index) 91 or higher (for Europe) or
Octane Rating of RON (Research Octane Number) 91/AKI (Anti-Knock Index) 87 or higher
(except Europe). For customers who do not use good quality gasolines, and have
problems starting or the engine does not run smoothly, one bottle of additive added to
the fuel tank is recommended according to the maintenance schedule (refer to the
"Scheduled maintenance services" in chapter 9).
Additives are available from your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
NOTICE
Never add any fuel system cleaning agents or other additives to the fuel tank other than
what has been specified. We recommend that you contact an authorized HYUNDAI
dealer for details.
Operation in foreign countries
If you are going to drive your vehicle in another country, be sure to:
• Observe all regulations regarding registration and insurance.
• Determine that acceptable fuel is available.
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