Advance Auto Parts offers automotive aftermarket products, free store services, and same day options at most locations. Their leading brands include FRAM fluids and oil filters, Carquest parts, and DieHard batteries. Services include free battery testing, free battery and wiper installation with purchase, free engine code scanning, and free starter and alternator testing. Customers can save by signing up for the Speed Perks loyalty program. Customer experiences highlight helpful service, such as staff using a meter to diagnose a check engine light and having the needed part in stock. The store can process returns by looking up a purchase with a phone number and issuing refunds to a debit card, though refunds may take time to appear. A common complaint is that stores often only stock the most expensive and second most expensive items, requiring customers to order basic or value parts online or wait for delivery from the warehouse. This can be inconvenient for those who need a part immediately.