As for reliability, that is one of the reasons I can't wait for EVs to hit the market in numbers. Far fewer moving parts so far less maintainance required
I doubt the EVs will be much (any) more reliable. The automakers have pretty much mastered the internal combustion engine. Look at CR's reported problems tally: The engines are generally not a significant source of trouble, the major auto manufacturers have done a good job in reducing maintenance requirements and increasing longevity. Brakes, transmissions, electrical systems, air conditioning, and especially body integrity are some of the more persistent trouble spots for many manufacturers. With EVs, the new technology batteries are going to have teething pains. The electronics to control braking/power use will be new. Hauling around hundreds of pounds of batteries and electric motors (combined they weigh more than an IC engine and fuel) should not be expected to improve brake life or body integrity.
There may be some good reasons to look forward it plug-in EVs, but I don't think reliabilty is likely to be among them for awhile. This isn't like comparing a gasoline weedwhacker to an electric weedwhacker.