In the United States, there is no federal law that requires car manufacturers to supply replacement parts for 10 years after a vehicle is produced. The so-called “10-year rule” is largely a myth. While many people believe automakers must provide parts for a decade, no such blanket rule exists. This misconception likely originated from: Manufacturer policies: Some automakers do voluntarily aim to provide parts for about 10 years after a model is discontinued, especially for safety-critical components. Industry practices: The automotive industry often tries to keep parts available for a reasonable period to maintain customer trust and brand reputation. Confusion with emissions laws: Federal law does require that emission-related parts and systems on most cars be covered under warranty for at least 8 years or 80,000 miles, but this is not the same as guaranteeing part availability. That being said, car manufacturers offer replacement parts for 7–10 years as a standard practice. some choose to extend this for popular models, high-volume vehicles, or due to customer demand. Do Car Manufacturers Have to Make Parts for 10 Years?
