Audi Q5 Owners & Service Manuals

Audi Q5: Fuel

Gasoline

Applies to vehicles: with gasoline engine

Using the right fuel helps keep the environment clean and prevents engine damage.

Fuel recommendation

The fuel recommended for your vehicle is unleaded premium grade gasoline. Audi recommends using TOP TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95 RON). For more information on TOP TIER Detergent Gasoline, please go to the official website (www.toptierga5.com).

The recommended gasoline octane rating for your engine can also be found on a label located on the inside of the fuel filler flap. This rating may be specified as AKI or RON.

Your vehicle may also be operated using unleaded regular gasoline with a minimum octane rating of 87 AKI/91 RON. However, using 87 AKI/91 RON octane fuel will slightly reduce engine performance.

Use unleaded gasoline only. Unleaded gasoline is available throughout the USA, Canada, and in most European countries. We recommend that you do not take your vehicle to areas or countries where unleaded gasoline may not be available.

Octane rating

Octane rating indicates a gasoline's ability to resist engine damaging "knock'" caused by premature ignition and detonation. Therefore, buying the correct grade of gasoline is very important to help prevent possible engine damage and a loss of engine performance.

Gasoline most commonly used in the United States and Canada has the following octane ratings that can usually be found on the filler pump:

  • Premium Grade: 91-96 AKI
  • Regular Grade: 87 - 90 AKI

Explanation of the abbreviations:

AKI = Anti Knock Index (R+M)/2 = (RON+MON)/2

RON = Research Octane Number

MON = Motor Octane Number.

Note

  • Do not use any fuel with octane ratings lower than 87 AKI or 91 RON otherwise expensive engine damage will occur.
  • Do not use leaded gasoline. The use of leaded gasoline will severely damage your vehicle's catalytic converter and its ability to control exhaust emissions.

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