See also:

Gasolines for cleaner air
To help contribute to cleaner air, HYUNDAI recommends that you use gasolines treated with detergent additives, which help prevent deposit formation in the engine. These gasolines will help the eng ...

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. ...

Use of MTBE
HYUNDAI recommends avoiding fuels containing MTBE (Methyl Tertiary Butyl Ether) over 15.0% vol. (Oxygen Content 2.7% weight) in your vehicle. Fuel containing MTBE over 15.0% vol. (Oxygen Content 2. ...