What is the cause of rust on the Vauxhall Astra's body?

I've noticed some rust spots on my Vauxhall Astra's body and I'm wondering what could be causing it. Is there anything I can do to prevent it?

The most common cause of rust on car bodies is exposure to moisture and salt. As the car gets older, the protective coatings may wear off, leaving the metal exposed to the elements. It's important to regularly clean and inspect your car for any signs of rust and have it treated as soon as possible.

Another possibility could be scratches or dents in the paint that expose the metal. These areas can easily rust if they come into contact with water or salt. It's important to fix any scratches or dents as soon as possible to prevent rust.

If you live in an area with harsh winter weather or near the coast, your car may be more susceptible to rust due to increased exposure to salt from de-icing roads or ocean spray. Regularly washing your car and applying a protective wax can help prevent rust.