Updates to the 2015 Chevy Volt include minor things like interior and exterior color choices, WiFi connectivity, and … an unannounced upgrade to the propulsion battery to 17.1 kilowatt-hours – up from 16.5. The extended-range electric Volt was launched December 2010 as a 2011 model with a 16.0-kwh pack rated at 35 miles electric range, […]

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