Why is my Vauxhall Astra's engine making a loud noise?

I have a Vauxhall Astra and recently I noticed that the engine is making a really loud noise when I start the car. It seems to go away after a few minutes, but I'm still concerned. What could be causing this? Is it a sign of a bigger problem?

It's possible that there could be an issue with your exhaust system. I would suggest taking your car to a mechanic to have it checked out.

Another potential cause could be a problem with the spark plugs or ignition system. I would recommend getting those inspected as well.

It could also be an issue with the timing belt. If it's loose or worn out, it can make a loud noise. You should have it checked by a mechanic as soon as possible.