Japanese automakers Nissan and Honda say they plan to share components for electric vehicles like batteries and jointly research software for autonomous driving.
Relatively speaking, perhaps. In practice, modern cars are pretty damn reliable, at least mechanically. Tons of cars end up in the junkyard with perfectly working engines.
I can't seem to find the reference now, but there are some studies out there showing every single brand is more reliable now than the best brand 20 years ago.