How to properly maintain the Audi engine?

I recently bought a used Audi and I want to make sure I'm properly maintaining the engine to extend its lifespan. What steps should I take to keep the engine in top shape?

Regularly check the oil levels and change the oil according to the manufacturer's recommendations. This will keep the engine running smoothly and prevent any potential damage.

Make sure to use high quality fuel and avoid cheap gas, as it can contain impurities that may harm the engine. Also, don't wait until the gas tank is almost empty before refueling.

Have the spark plugs and spark plug wires replaced every 30,000 miles or as recommended by the manufacturer. This will ensure proper ignition and improve overall engine performance.