| − | Batteries on several Chevrolet Volt cars caught fire. A coolant leak was the reason given by GM. <ref>[http://online.wsj.com/news/articles/SB10001424052970204336104577092292258380790 Probe of GM's Volt Fires May Be Lengthy, WSJ.com, December 12, 2011]</ref>. | + | Batteries on several Chevrolet Volt cars caught fire. A coolant leak was the reason given by GM. <ref>[http://online.wsj.com/news/articles/SB10001424052970204336104577092292258380790 Probe of GM's Volt Fires May Be Lengthy, WSJ.com, December 12, 2011]</ref>. |
| | + | Battery degradation is seriously flawed, dropping as much as 57% in very cold weather and by 33% in extreme heat. This affects all electric vehicles, not just the Volt. <ref>[http://www.usatoday.com/story/money/cars/2014/03/20/cold-sharply-cuts-range-of-electric-vehicles/6622979/ AAA: Range of electric cars cut in cold, hot weather, USAToday, March 20, 2014]</ref> |