How to extend the life of the engine on an Audi A4?

I just bought a used Audi A4 and I want to make sure the engine lasts as long as possible. What steps should I take to ensure its longevity?

Regularly change the oil and oil filter according to the manufacturer's recommendations. This will keep the engine lubricated and prevent any buildup of contaminants that can cause damage.

Monitor the engine's temperature and avoid driving aggressively. Overheating and frequent rapid acceleration can put unnecessary stress on the engine and shorten its lifespan.

Invest in quality fuel and refrain from letting the tank run low. Poor quality fuel can cause build up in the engine, while driving with a low fuel levels can lead to sediment being drawn into the fuel system, both of which can cause damage.