What is the most efficient way to reduce exhaust gas emissions in an Audi A4?

I am looking for ways to minimize the amount of exhaust gas emitted by my Audi A4, as it is important for both the environment and the performance of my car. What methods should I consider and what are the potential benefits?

One of the most effective ways to reduce exhaust gas emissions in an Audi A4 is to regularly maintain and service the car. This not only keeps the engine running smoothly but also ensures that all systems are functioning properly and emitting minimal pollutants.

Another way to reduce exhaust gas emissions is to switch to synthetic engine oil. Synthetic oil has been proven to have lower levels of contaminants and can also improve engine efficiency, leading to reduced emissions.

Consider adding a catalytic converter to your Audi A4. This device helps convert harmful pollutants in exhaust gas into less harmful substances, reducing the overall emissions from your vehicle.