While Chevrolet does offer a complimentary maintenance plan with some of their vehicles, it's not a standard feature across all models. To confirm whether a specific 2014 Volt model had free maintenance, you would need to check the original sales contract or contact a Chevrolet dealer.
It's important to note that even if the Volt did come with a free maintenance plan, it likely only covered basic services such as oil changes and tire rotations for a limited period of time. It wouldn't cover major repairs or maintenance items.