Why does my Vauxhall Astra's engine start making strange noises?

I have noticed that my Vauxhall Astra's engine has started to make some unusual noises. It almost sounds like a rattling or knocking sound. I have checked the oil levels and they seem fine. What could be causing this issue and how can I fix it?

Sarah, this could be a sign of a bigger problem. It is important to get your car checked by a mechanic as soon as possible. The noise could be coming from a loose or damaged component in the engine, such as the timing belt or valves. Ignoring this issue could lead to expensive repairs down the line.

Hi Sarah, have you recently changed any parts in your engine? It is possible that a new part, such as a belt, was not installed properly and is causing the noise. I recommend taking your car to a trusted mechanic to have it inspected.

Sarah, I had a similar issue with my Astra and it turned out to be a problem with the exhaust system. Make sure to check for any leaks or damage in the exhaust pipes and muffler. It may be a simple fix if caught early.