Before getting a car window replacement, ask about the type and quality of glass used. Inquire if they use OEM (Original Equipment Manufacturer) glass or aftermarket alternatives, and understand the differences in quality and fit. Discuss the installation process, including how long it takes and if they offer mobile services. Clarify the warranty on both the glass and the installation work to ensure coverage for any future issues. Ask about the technician’s experience and certifications to ensure competent installation. Finally, request a detailed quote that outlines all costs involved, including labor and materials, to avoid surprises.