Why is my Vauxhall Combo Life experiencing a decrease in acceleration?

I've noticed that my Vauxhall Combo Life is not accelerating as quickly as it used to. What could be causing this issue and how can I fix it?

It is possible that your air filter is dirty and needs to be replaced. A clogged air filter can result in decreased acceleration. Try checking and replacing your air filter.

Another potential issue could be a faulty mass air flow sensor. When this sensor malfunctions, it can cause a decrease in acceleration. Consider getting your mass air flow sensor checked and replaced if necessary.

You may also want to check your spark plugs. If they are worn out or dirty, they can negatively impact your vehicle's acceleration. Consider replacing your spark plugs.