Why is my Vauxhall Crossland's fuel economy decreasing?

I have noticed that my Vauxhall Crossland's fuel economy has been steadily decreasing over the past few weeks. I regularly fill up with high grade fuel and ensure that my tires are properly inflated, so I'm not sure what could be causing this issue. What could be causing this decrease in fuel economy?

One potential reason for your decreasing fuel economy could be dirty fuel injectors. Over time, deposits can build up on the injectors and cause them to clog, leading to decreased efficiency. I recommend getting your fuel injectors cleaned by a professional mechanic.

Another possibility is that your air filter is dirty or clogged, restricting air flow to the engine. This can cause your car to use more fuel than necessary. I suggest checking your air filter and replacing it if it is dirty.

You may also want to check your spark plugs. Worn or dirty spark plugs can cause your car to have trouble burning fuel efficiently. Consider replacing them if they are worn or cleaning them if they are just dirty.