Mix a solution of one part vinegar to two parts water in a pan. Stir the solution gently to mix well.
Place the solution in a spray bottle. Spray the windows with the cleaning solution and wipe off. Use newspaper in an up-and-down motion, and follow with a side-to-side motion over the same area.
Dry windows thoroughly with additional newspaper so there are no streaks. Clean the outside of each window first and then the inside of each window. This will clean the dirtiest part on the outside first so that any spots or tough stains will be evident from the inside of the automobile after cleaning the inside.
Roll the side windows down part way to clean the top few inches of each window both inside and outside. Debris catches on the top edges of windows and then travels with the window when rolling it up.
Use a razor blade to scrape any stuck-on debris off windows. Scrape the area gently with the razor blade while holding it at a 45-degree angle to the window.