Auto warranty is a promise given by the auto dealer in association with the car manufacturer to maintain the vehicle for a period of time from the date of its sale. It also includes repairs and replacement of minor spare parts. There are two types of auto warranty. They are new car warranty and used car warranty. There is a separate law to protect the interests of car owners. The law governing new car warranty is called new car warranty law. The law governing the used car warranty is called used car warranty law. It is popularly known as lemon law rule since it is protective in nature. 
The lemon law is more or less common across all US states. It was evolved to insulate car owners against fraudulent warranties, which make plenty of false promises. The fraudulent warranties are in circulation in the used car market and are often curbed through the lemon law. Car owners are made to shell out more money for features on the used car warranty. Most of the times, the features are not delivered in full. Under such circumstances, the car owner can seek justice from the warranty firm using the lemon law rule. Obtain a copy of the lemon law from the local auto dealer.