The oil filter for your Audi A4 2.0L engine is located on the bottom of the engine, on the passenger side. It is a cylindrical-shaped object, about the size of a tennis ball.
Here are the steps on how to locate the oil filter on your Audi A4 2.0L:
1. Open the hood of your car.
2. Locate the oil filter cap on the top of the engine. It is usually black and has a round shape.
3. Remove the oil filter cap by turning it counterclockwise.
4. Look inside the oil filter housing and you will see the oil filter.
Here is a picture of the oil filter location on an Audi A4 2.0L engine:
[Image of the oil filter location on an Audi A4 2.0L engine]
Note: The oil filter location may vary slightly depending on the year and model of your Audi A4. If you are unsure of where the oil filter is located, please consult your owner's manual.