Earlier quoted context omitted.
A standard hybrid (of the sort that a range of companies make, handwavingly a parallel hybrid with creep capability, which a PHEV is just a supersized version of) eliminates a huge swath of things that go wrong with ICEs. First and foremost, the transmission replaces the rather staggering pile of complexity of a modern automatic transmission, typically, with "a few motor/generators, some planetary gears, maybe a band…
> "First and foremost, the transmission replaces the rather staggering pile of complexity of a modern automatic transmission, typically, with "a few motor/generators, some planetary gears, maybe a band that only engages when a motor is already stopped, and some power electronics." Compared to the 9+ speed automatics, this is dramatically simpler. Quite a few hybrids don't even have a mechanical reverse gear, it's jus…
Series-Parallel and Series hybrid remove transmission so possibly there's an reliability advantage. For Parallel hybrid, it's electric addon so I don't know there are reliability advantage.