Hyundai Sonata: Gasoline containing alcohol and methanol - Fuel requirements - Introduction - Hyundai Sonata Owners ManualHyundai Sonata: 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 leaded or unleaded gasoline.

Do not use gasohol containing more than 10% ethanol, and do not use gasoline or gasohol containing any methanol. Either of these fuels may cause drivability problems and damage to the fuel system. Discontinue using gasohol of any kind if drivability problems occur.

Vehicle damage or drivability problems may not be covered by the manufacturer’s warranty if they result from the use of:

  1. Gasohol containing more than 10% ethanol.
  2. Gasoline or gasohol containing methanol.
  3. Leaded fuel or leaded gasohol.

"E85" fuel is an alternative fuel comprised of 85 percent ethanol and 15 percent gasoline, and is manufactured exclusively for use in Flexible Fuel Vehicles. “E85” is not compatible with your vehicle. Use of “E85” may result in poor engine performance and damage to your vehicle's engine and fuel system. HYUNDAI recommends that customers do not use fuel with an ethanol content exceeding 10 percent.

CAUTION

Your New Vehicle Limited Warranty does not cover damage to the fuel system or any performance problems caused by the use of “E85” fuel.

CAUTION

Never use gasohol which contains methanol. Discontinue use of any gasohol product which impairs drivability.

    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 ...

    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. ...

    See also:

    Opening and closing
    Overhead control panel 1. To open 2. To open 3. To close •► Turn the SmartKey to position 1 or 2 in the ignition lock. •► Press or pull the switch in the correspondin ...

    eAssist® Overview
    If the vehicle has eAssist, there are several additional features which contribute to increased efficiency. Vehicles with eAssist have an automatic engine start/stop feature. This feature save ...

    Music Box Hard Drive audio system without Navigation System (if so equipped)
    The Music Box Hard Drive audio system can store songs from CDs being played. The system has an 800 megabyte (MB) storage capacity and can record up to 24 hours (approximately 360 songs). The foll ...