What About Gasohol?
Gasohol (a mixture of 90% unleaded gasoline and 10% ethanol or grain alcohol) may be used in your Hyundai. However, if your engine develops driveability problems, the use of 100% unleaded gasoline is recommended. Fuels with unspecified quantities of alcohol, or alcohols other than ethanol, should not be used.
See also:
Check Spark Plugs and Ignition System
Inspect your spark plugs and replace them if necessary. Also check all ignition
wiring and components to be sure they are not cracked, worn or damaged in any way. ...
Immobilizer system (if equipped)
Your vehicle is equipped with an electronic engine immobilizer system to reduce
the risk of unauthorized vehicle use.
Your immobilizer system is comprised of a small transponder in the ignition key ...
Headrest
The rear seat(s) is equipped with headrests in all the seating positions for
the occupant's safety and comfort.
The headrest not only provides comfort for passengers, but also helps to protec ...