Hyundai Sonata: Fuel requirements - Introduction - Hyundai Sonata Owners ManualHyundai Sonata: Fuel requirements

Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher.

Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize exhaust emissions and spark plug fouling.

CAUTION

Never add any fuel system cleaning agents to the fuel tank other than what has been specified. (Consult an authorized HYUNDAI dealer for details.)

WARNING

  • Do not "top off" after the nozzle automatically shuts off when refueling.
  • Tighten the cap until it clicks, otherwise the Malfunction Indicator Light “Always check that the fuel cap is installed securely to prevent fuel” will illuminate.
  • Always check that the fuel cap is installed securely to prevent fuel spillage in the event of an accident.
How to use this manual
We want to help you get the greatest possible driving pleasure from your vehicle. Your Owner’s Manual can assist you in many ways. We strongly recommend that you read the entire manual. In order ...

Gasoline containing alcohol and methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed along with or instead of leade ...

See also:

Passive Entry
This allows the Passive Entry feature to be turned on or off. Press SELECT when Passive Entry is highlighted. Turn the Menu knob to select On or Off. Press SELECT to confirm the selection. Pr ...

Side impact and curtain air bags
Side impact and curtain air bags are designed to inflate when an impact is detected by side collision sensors depending on the strength, speed or angles of impact resulting from a side impact ...

General information
WARNINGS: Use load securing straps to anapproved standard, e.g. DIN. Make sure that you secure all looseitems properly. Place luggage and other loads aslow and as far forward as possiblewithin the ...