Battery OEM Chevrolet or OEM Mercedes

This just happened to me last month on my 2017 C43 on the OEM battery. I guess five years is typical on these newer MB.

Have a Chevy Volt. The battery is only good for 22-40 miles depending on outside temp. It gets plugged in at night and costs $14-18 a month. For the past 3 years we have used less then 25 gallons of gas.

Not many cons. The car is much better on electricity than when the gas motor has to kick in. Much quieter and has a bit more throttle response so I don't like it when the battery runs out.

the only time it failed me was when the battery died after 100k miles.

When you say, \u201ctwo new batteries\u201d are you speaking of the big ones? There is a small one that operate your convenience/comfort items. It looks like a small garage door battery.

We've been driving two EVs, a 2012 Leaf since Dec2011 and a 2017 Bolt since Sept 2017.

In the Bolt we lose about 40% range at -20 and lower. Bu the range is so good to begin with its not an issue.

I've dealt with this issue on both of my newer AMG vehicles. My older ones never had this problem. From my understanding, this is caused by the new mbux system being a bit of a power hog. I eventually had to invest in a trickle charger, and I have to charge both of my AMGs 3-4 times per year. It gets worse as your battery gets toward the end of its lifespan.