The service life of car windshield wipers typically ranges from 6 months to 4 years, depending on the material, usage environment, and maintenance methods. Ordinary rubber wipers may need replacement every 6 to 12 months in high-temperature, rainy, or dusty environments, while high-end products made of silicone or polyurethane can last 3 to 5 years. In daily use, if issues such as incomplete water wiping, rubber strip cracking, abnormal noise, or band-shaped water marks occur, the wipers should be replaced immediately to avoid affecting driving safety or scratching the windshield. The key to extending their lifespan lies in regularly cleaning dirt from the rubber strips, avoiding dry wiping without water, and preventing exposure to direct sunlight. Self-replacement can be completed in just a few minutes.