Why is my Kia Sportage's fuel consumption increasing?

I purchased my Kia Sportage three months ago, and I've noticed that the fuel consumption has been increasing steadily. I'm not sure why this is happening. Any advice on how to improve the fuel efficiency?

Have you checked your tire pressure? Low tire pressure can increase fuel consumption. Make sure to keep your tires properly inflated.

Are you using the air conditioning frequently? It can put extra strain on the engine and lead to higher fuel consumption. Try to use it sparingly.

Have you been using low-quality fuel? It can negatively affect your car's performance and fuel economy. Stick to using reputable fuel brands.