How do you find the release button for a petrol cap on an astra?

To find the release button for the petrol cap on an Astra, look for a lever or button located on the driver's side, typically near the door or on the dashboard. In some models, it may be a small tab that you push to release the cap. If you're unsure, consult the vehicle's owner manual for specific instructions related to your Astra model. Once released, the cap can be unscrewed to access the fuel tank.