All cars get this, not just the Leaf. It's because there is something on the surface of the window. Tree sap, the remains of bird diarrhoea, even sea salt or dirt from nearby industry. I get it really badly on my Mitsubishi, leaving near the sea and a rubbish burner, and the car park at work having lots of trees with sap and extremely ill birds.
A normal car wash doesn't always work, you might need to get some proper cleaner and clean the windscreen and wipers by hand.
A normal car wash doesn't always work, you might need to get some proper cleaner and clean the windscreen and wipers by hand.
