1. Audi A4: The fuel filter is located on the passenger side, near the rear wheel. To access the fuel filter, you will need to remove the rear seat and the access panel.
2. Audi A6: The fuel filter is located on the driver's side, under the rear seat. To access the fuel filter, you will need to remove the rear seat and the access panel.
3. Audi Q5: The fuel filter is located on the passenger side, near the front wheel. To access the fuel filter, you will need to remove the passenger side front wheel and the inner fender liner.
