How to troubleshoot a faulty transmission in a Vauxhall Astra?

I have been experiencing issues with my Vauxhall Astra's transmission and I'm not sure what to do. The gears seem to stick and there's a strange noise coming from under the car. What could be causing this problem and how can I fix it?

Based on your description, it sounds like your transmission may be experiencing issues with worn out gears or a damaged clutch. It's important to have this checked by a qualified mechanic as soon as possible to prevent further damage to your vehicle.

Before taking your car to a mechanic, try checking the transmission fluid levels. If they are low, this could be the cause of the issue. Refill the fluid and see if the problem persists. If it does, then it's best to take it to a professional for further diagnosis.

I had a similar issue with my Vauxhall Astra and it turned out to be a faulty sensor. Make sure to have the sensors checked as they can often cause transmission problems.