400-500 miles per charge? I would love that, but I don't even get over 300 miles of city driving in my Honda Fit or Ford Escape Hybrid. If they target urban drivers, then 150-200 miles is pretty good. The only reason the battery may be replaced once (not frequently) is if the car is built well enough that you can imagine another 100k miles after there first 100k.
2/19/15 at 4:42pm