Under the California Mid Size Car Lemon Law, if no express warranty is provided with the mid-size car, the implied warranty of merchantability lasts for one year. This means that the car must meet basic expectations of quality and performance for at least one year from the date of purchase. The implied warranty of merchantability ensures that the mid-size car is suitable for its ordinary purpose, safe to drive, and free of substantial defects that would impair its use, value, or safety.

In practical terms, this warranty implies that consumers can expect their mid-size cars to function properly for a reasonable period after purchase, barring misuse or neglect. If the car exhibits significant defects that affect its usability or safety within this one-year period, the consumer has rights under the Mid Size Car Lemon Law. They can typically seek repairs or, if the defects persist, potentially receive a replacement vehicle or a refund, depending on the circumstances and efforts made by the manufacturer to rectify the issues.