AutoZone on Preston Highway in Louisville is a leading retailer of auto parts, offering new and remanufactured hard parts, maintenance items, and accessories. Customers report it is a great place for auto parts with quality products and good service. The store offers free diagnostic testing on certain items and, when employees are available, assistance with installing parts. Multiple reviews highlight exceptional customer service, describing it as the best experienced and noting staff who go above and beyond to help. Employees are commended for being happy to help, getting the job done right, and providing tremendous assistance with exchanges and finding correct parts. The store is noted for having a wide assortment, with customers finding everything needed for repairs and projects. One customer specifically mentioned choosing this location after another branch refused a service, expressing gladness to get what they needed taken care of here.