Information from Volt-Stats:
Green Car Reports
One of the biggest worries about electric cars--and hybrids for that matter--is whether their expensive high-voltage battery packs will last the life of the car.
If not, potential buyers worry, they may be saddled with thousands of dollars of cost in years to come.
The evidence on hybrids is largely positive over the last 15 years, but there's less evidence for electric cars.
Now, however, we have a new data point: Erick Belmer's 2012 Chevrolet Volt range-extended electric car just crossed 300,000 miles last week (dated content), as he posted to a Volt Owner's Group on Facebook.
And Belmer says it shows no apparent degradation in either its battery capacity or its electric range (rated at 35 miles for that model year).
After 140 comments and almost 800 Likes, the general consensus among owners is that the Volt appears to be hugely durable, and that battery life is the least of a Volt driver's worries.
>> Current: Total Miles: 372,764 (Battery: 129,704; 34.8%)
>> The owner, Erick Belmer, commutes 110 miles each way to work. He works for GM and they closed down his plant in OH. Instead of moving his family, he commutes. He calls his commute his second job.
>> Not sure if anyone heard from the Chevrolet Volt Owner's FB page, but Sparkie broke down last Sunday and had to be towed to a Chevrolet dealership. Message on the center console stated "Lost communication with high voltage charging system". Anyway, problem was caused by the failure of the Powertrain Control Module. $1,000 and 3 days later Sparkie was back on the road.
>> Noticed he recently uploaded the video above where he states NO overall range loss from his battery pack even after so many miles!
>> At 95,000 EV miles I have seen no significant degradation in my range. I always drive 100% EV. Next Monday will mark 4 consecutive years without using my range extender. I am always pushing the range in my Volt. If I was losing range, I would know. I can still get about the same range out of it as I did when I had 5 miles on the odometer back in December 2011. I do not baby it. Frequently I dip down to just a few miles of range left and drive around 1,800 EV miles per month. I do drive slower than most by mostly avoiding highway speeds, so maybe the slower discharge rate makes a difference. Funny thing is, my 100K warranty on the battery will expire when I have 99,860 EV miles. Unfortunately there will be no free upgrading of the battery for me as it is still perfect.
>> Following "Sparkie" on Voltstats along witn reading user reviews is what convinced me to take a chance on GM and the Volt. I look forward to reading about Sparkie hitting 400,000 miles. At the rate I am accumulating miles, it will be 2025 before I hit 100,000.