clean your car windows without the streaks. I clean my windows with newspaper and Halfords glass cleaner but still have marks/grease on the front window ( my mind as gone blank for the correct word). Everytime I see pics of your Fabia's the windows are stunning.

Water + Vinegar.

or

Water + Lemon. Smells nicer

I use Homebase's version of Windowlene and then coat the outside of the glass with Ombrello rain repellent Stay nice and clean for ages then

Chris