How do I troubleshoot a malfunctioning windshield wiper in my Vauxhall Astra?

I recently noticed that my windshield wiper on the driver's side of my Vauxhall Astra is not working properly. It seems to be getting stuck in certain spots and not wiping the entire windshield. What could be causing this issue and how can I fix it?

First, check the wiper blade itself for any wear or damage. If it looks fine, then it's likely an issue with the wiper arm. Try adjusting the tension on the wiper arm or replacing the entire arm if necessary.

Another possible cause could be a clogged wiper fluid nozzle. Try cleaning it out with a needle or paperclip. If that doesn't work, it may be time to replace the nozzle.

It's also important to regularly check and replace your wiper blades. Worn out blades can cause uneven wiping and ultimately lead to more serious issues.