See also:

Safety
The Hyundai Sonata is one of only two cars on the market that have received both a Top Safety Pick designation from the Insurance Institute for Highway Safety and a five-star overall safety rating ...

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 ...

Closing the fuel filler lid
1. To install the cap, turn it clockwise until it “click”. This indicates that the cap is securely tightened. 2. Close the fuel filler lid and push it in lightly making sure that it is securely c ...