Instruction book AUDI A1
 Audi A1   General maintenance   Checking and topping up fluids  Fuel
The correct grade of petrol is listed inside the fuel tank flap.
The Audi A1 is equipped with a catalytic converter and must only be run on unleaded petrol. Unleaded petrol must be sulphur-free and must comply with the European EN 228 standard. The petrol grades have different octane ratings (RON).
Super Plus sulphur-free petrol (98 RON) or premium sulphur-free petrol (at least 95 RON)
The use of Super Plus petrol (98 RON) is recommended. If that type of fuel is not available, premium petrol (RON 95) can be used with a slight loss of power.
Premium sulphur-free petrol (95 RON) or regular sulphur-free petrol (at least 91 RON)
The use of premium petrol (95 RON) is recommended. If that type of fuel is not available, regular petrol (RON 91) can be used with a slight loss of power.
Premium sulphur-free petrol (at least 95 RON)
Premium petrol (at least 95 RON) must be used.
If premium petrol is not available, the engine can be run on regular petrol with 91 RON as an emergency measure. In this case only use moderate engine speeds and a light throttle. Fill up with premium or Super Plus petrol as soon as possible.
Caution!
  • Petrol complying with the EN 228 standard can contain small quantities of ethanol. However, "ethanol fuels", which are retailed under various different names such as E50 and E85, and which contain a large proportion of ethanol, must not be put into the Audi A1, as this would damage the fuel system.
  • Even one tankful of leaded fuel would permanently impair the efficiency of the catalytic converter.
  • You should use only petrol additives which have been approved by Audi.
  • Metal-based fuels, which can be identified from the marking on the fuel dispenser, must not be used. LRP fuel (lead replacement petrol) also contains high concentrations of metallic additive. Risk of engine damage!
  • High engine speed and full throttle can damage the engine when using petrol with an octane rating lower than the correct grade for the engine.
Note
  • You can use higher octane fuel than your engine requires.
  • In countries where sulphur-free fuel is not available, you may use low-sulphur fuel instead.

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