What could be causing my Vauxhall Astra to experience a loss of power?

I have noticed that my Vauxhall Astra is not accelerating as quickly as it used to and there is a noticeable loss of power. What could be the issue?

One possible cause for a loss of power could be a clogged air filter. You can try changing the air filter yourself or take it to a mechanic for a tune-up.

Another potential cause may be a problem with the fuel system, such as a clogged fuel filter. It's best to get it checked by a mechanic to properly diagnose and fix the issue.

A faulty oxygen sensor can also contribute to a loss of power. It's important to get this fixed as it can also affect your car's fuel efficiency.