What is the cause of the excessive fuel consumption in an Audi A2?

I am noticing that my Audi A2 seems to be consuming more fuel than usual. I have had the car for a few years now and this has only recently become an issue. Any insights on what could be causing this and how to fix it?

One possible reason for your Audi A2's increased fuel consumption could be a faulty oxygen sensor. This sensor helps regulate the fuel-air mixture and if it is malfunctioning, it could be causing your engine to use more fuel than necessary. Consider getting it checked and replaced if needed.

Another factor to consider is your driving habits. Aggressive driving, such as frequent accelerating and braking, can result in excessive fuel consumption. Try to drive more smoothly and maintain a consistent speed to improve your fuel efficiency.

Check your air filter. If it is clogged or dirty, it can restrict the flow of air to the engine, causing it to use more fuel. Replace the air filter if needed and see if that improves your fuel consumption.