Getting clean, streak-free car windows is both an art and a science. Many car owners struggle with streaks that appear after washing, often due to improper products or poor technique. If you're asking how to wash your car windows without streaks, start with the right tools—choose a high-quality, ammonia-free automotive glass cleaner and a clean microfiber towel. Avoid using paper towels, which can leave lint and scratch-sensitive glass coatings. Spray the cleaner directly onto the towel instead of the window to control the amount of product and reduce overspray. Use straight horizontal or vertical strokes to wipe the glass, not circular motions which tend to cause uneven pressure and streak patterns. After the first pass, immediately follow up with a second dry microfiber towel to buff the window to a streak-free finish. This two-cloth method is especially effective for large or curved windows like windshields. Clean your windows in the shade, not direct sunlight, as heat causes the cleaner to evaporate too quickly, leaving marks behind. For professional results, clean both the inside and outside surfaces and replace your microfiber towels regularly to avoid transferring grease or dirt. Consistent window cleaning improves not only visibility and aesthetics but also the performance of rain sensors and ADAS cameras that depend on a clean view.