* Gasoline Engines: Most 2001 Audi A4s were equipped with gasoline engines, typically requiring unleaded fuel with an octane rating of 87 or higher.
* Diesel Engines: Some 2001 Audi A4s were equipped with a 1.9-liter TDI diesel engine, requiring diesel fuel.
To determine the specific fuel type required for your 2001 Audi A4, you should:
1. Check the owner's manual: This is the most reliable source of information on fuel requirements for your specific vehicle.
2. Look at the fuel filler cap: The fuel filler cap often indicates the fuel type.
3. Check the vehicle identification number (VIN): This can be used to identify the engine model and fuel type.
It is crucial to use the correct fuel type for your Audi A4. Using the wrong fuel can damage your engine and lead to costly repairs.
