I have a 2014 Volt with around 75,000 miles. Around a month or two back, it would not start ... completely dead. Took to dealership, they said battery is good, everything checked out. They changed something called battery receptacles but this made no different. I continue to have the same problem frequently. The only time this does not happen is if the Volt is plugged in ... it start with no issues. Otherwise, it is 50 - 50. If the weather is on the cold side, it is more likely not to start. Taking it back to the dealership again tomorrow. If they cannot fix it, will seriously consider selling it off. I have bought a portable battery jumping kit and carry it around expecting to use it frequently. When the battery dies, the hatchback door cannot be opened ... there is no key bypass ... serious design flaw. Will try to post updates as this develops further.