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

I recently purchased a Vauxhall Astra from a private seller. It's been running smoothly until I noticed that the engine has started to make a loud knocking sound. It only happens when I accelerate or when the car is idling. What could be causing this issue?

Hi Alexandra, based on your description it sounds like your engine is experiencing knocking, which can be caused by a variety of factors such as low oil levels, worn out spark plugs, or faulty fuel injectors. I would recommend taking your car to a trusted mechanic to diagnose and fix the issue before it causes further damage to your engine.

Hi Alexandra, it's important to address this issue as soon as possible. Ignoring the knocking sound can lead to more serious and expensive engine problems. Make sure to check your oil levels regularly and get your car inspected by a professional mechanic.

Hi Alexandra, having a good maintenance routine can help prevent knocking issues in your engine. Make sure to use the recommended oil and fuel for your car, and get regular tune-ups to keep your engine running smoothly.