 The 2011 Chevrolet Volt standard features include 4 @-@ wheel anti @-@ lock brakes with traction control ; <unk> electronic stability control system with brake assist ; tire @-@ pressure monitoring system ; and 8 total airbags : dual @-@ stage frontal , side @-@ impact and knee for driver and front passenger , and roof @-@ rail side @-@ impact for front and rear outboard seating positions , with a passenger sensing system . There is also available an optional emergency assistance system . A safety cage , built with high @-@ strength and ultra high @-@ strength steel , surrounds the passenger compartment to keep the space intact in the event of a crash . Crush zones framing the trunk and the engine crumple to absorb crash energy before it reaches occupants . Door hinges and latches in harmony with door structure and its steel reinforcements to keep doors closed during an impact . The 2011 Chevrolet Volt was named " Top Safety Pick " by the Insurance Institute for Highway Safety . The Volt received the top ratings of " Good " for front , side , and rear impact crash tests , and also on rollover protection . All injury measurements except one were rated good , indicating a low risk of significant injuries in crashes according to the scale of severity employed in the IIHS ’ s testing . The Volt 's lower rating of " Acceptable " was for torso injuries . 
