Why is my BMW 4 Series fuel consumption increasing?

I have noticed that my BMW 4 Series' fuel consumption has been steadily increasing over the past few months. It used to get excellent gas mileage, but now it seems like I have to fill up the tank more frequently. What could be causing this issue and how can I fix it?

First, check for any engine or transmission issues that could be causing your car to work harder and consume more fuel. You may also want to have your air filter and fuel filter checked and replaced if necessary. Additionally, make sure your tires are properly inflated and consider getting a tune-up to ensure your car is running efficiently.