Why is my Vauxhall Insignia 1.6CDTi losing power?

I've noticed that my 2015 Vauxhall Insignia 1.6CDTi has been losing power lately. The acceleration is sluggish and the top speed seems to have decreased. What could be causing this issue?

It's possible that your turbocharger is failing. This can cause a loss of power and decrease in top speed. Have you noticed any strange noises coming from the engine?

Another potential issue could be a clogged fuel filter. This can restrict fuel flow and lead to a decrease in power. When was the last time you had your fuel filter replaced?

It's also worth checking your air filter. A dirty air filter can impact engine performance and decrease power. Have you had it checked or replaced recently?