Audi Q5 Owners & Service Manuals

Audi Q5: Blended gasoline

Audi Q5 Type 8R (2008 - 2017) Owner's Manual / Operating instructions / Fuel and Refueling / Blended gasoline

Applies to vehicles: with gasoline engine

Use of gasoline containing alcohol or MTBE (methyl tertiary butyl ether)

You may use unleaded gasoline blended with alcohol or MTBE (commonly referred to as oxygenates) if the blended mixture meets the following criteria:

Blend of gasoline methanol (wood alcohol or methyl alcohol)

  • Anti-knock index must be 87 AKI or higher.
  • Blend must contain no more than 3% methanol.
  • Blend must contain more than 2% co solvents

Blend of gasoline and ethanol (grain alcohol or ethyl alcohol)

  • Anti-knock index must be 87 AKI or higher.
  • Blend must not contain more than 15% ethanol.
  • Vehicles with flexible fuel engine: blend must not contain more than 85% ethanol.

Blend of gasoline and MTBE

  • Anti-knock index must be 87 AKI or higher.
  • Blend must contain not more than 15% MTBE

Seasonally adjusted gasoline

Many gasoline grades are blended to perform especially well for winter or summer driving. During seasonal change-over, we suggest that you fill up at busy gas stations where the seasonal adjustment is more likely to be made in time.

Note

  • Fuels containing a high percentage of ethanol such as E50 and E85 may only be used in vehicles with flexible fuel engines. Using high ethanol fuel in vehicles not equipped with flexible fuel engines can cause severe engine damage.
  • Methanol fuels which do not meet these requirements may cause corrosion and damage to plastic and rubber components in the fuel system.
  • Do not use fuels that fail to meet the specified criteria in this chapter.
  • If you are unable to determine whether or not a particular fuel blend meets the specifications, ask your service station or its fuel supplier.
  • Do not use fuel for which the contents cannot be identified.
  • Fuel system damage and performance problems resulting from the use of fuels different from those specified are not the responsibility of Audi and are not covered under the New Vehicle or the Emission Control System Warranties.
  • If you experience a loss of fuel economy or driveability and performance problems due to the use of one of these fuel blends, we recommend that you switch to unblended fuel.

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