What is the best way to maintain good tire pressure in an Audi A2?

I recently bought an Audi A2 and noticed that my tire pressure is always fluctuating. What can I do to maintain proper tire pressure in my Audi A2?

Regularly check your tire pressure and fill them up as needed. Overinflated or underinflated tires can negatively affect your car's handling and gas mileage.

Make sure to use a high-quality tire gauge to accurately measure your tire pressure. Cheap gauges can give false readings.