Implied warranties are unspoken, unwritten promises from a seller to a buyer, created by virtue of state law. Almost every purchase you make is covered by an implied warranty. Under the implied warranty of merchantability, the product must do what it’s supposed to. For example, if you buy a car, there is an implied guarantee that the car will run. Another implied warranty is what’s called the warranty of fitness for a particular purpose. Using the car example again, it means if you buy a specific vehicle for hauling a trailer, that vehicle must actually be suitable for hauling a trailer. If problems arise that aren’t covered by a written warranty, or if your purchase didn’t come with one, investigate protection under these implied warranty rules. In some cases, products sold “as-is” might not be covered, but several states do not even permit “as is” sales. Implied warranty coverage can last as long as four years, although the length of the coverage varies from state to state.