 Combined global Volt / Ampera sales passed the 100 @,@ 000 unit milestone in October 2015 . The Volt family of vehicles ranks as the world 's all @-@ time top selling plug @-@ in hybrid , and it is also the second best selling plug @-@ in electric car ever , after the Nissan Leaf , which has sold 200 @,@ 000 units worldwide by early December 2015 . The Volt / Ampera family was the world 's best selling plug @-@ in electric car in 2012 with 31 @,@ 400 units sold . The Opel / Vauxhall Ampera was Europe 's top selling plug @-@ in electric car in 2012 with 5 @,@ 268 units , representing a market share of 21 @.@ 5 % of the region 's plug @-@ in electric passenger car segment . However , during 2013 Ampera sales fell 40 % , and the declining trend continued during 2014 and 2015 . 
