How do I remove pond scum from my Audi's windshield?

I recently noticed a slimy film coating my Audi's windshield, making it difficult to see while driving. I'm unsure of the cause and how to properly clean it. Any suggestions?

First and foremost, make sure to use a windshield cleaner specifically made for glass to avoid any damage. If the scum persists, mix equal parts vinegar and water and use a soft cloth to gently wipe down the windshield. Rinse with water and dry with a clean cloth.

Try using a clay bar or detailing clay to gently remove the scum from your windshield. Be sure to use a lubricant such as glass cleaner or soapy water to prevent scratching the glass. Finish off with a glass cleaner for a streak-free shine.

To prevent pond scum buildup on your windshield, regularly clean your wiper blades with rubbing alcohol or vinegar. This will remove any residue that can transfer onto your windshield and cause the slimy film.