I think that the reliability
I think that the reliability difference between the Toyota Prius and Civic Hybrids were related to the fact that Toyota started building the firs gen Prius long before the first Civic Hybrid came out. Toyota supposedly lost money on every Prius built for many years. Secondly, I think that along the same lines, Toyota was really committed to establishing the Prius brand as being both economical and reliable. I had heard from devoted early Insight owners who loved their tiny eco-mobiles, but I think that generally Honda had considered their hybrid models to be a secondary consideration to the bread and butter gas-only Civic, Accord, and CR-V models that brought the real profits in for Honda. So Toyota had greater hybrid experience and devoted more resources towards their hybrid engineering and reliability. With the release of the Clarity models, with EV, PHEV, and FCEV versions, they challenged the successful Prius Prime, but it came out almost a year after the Prime's debut. I think that Honda has nearly caught up with Toyota in terms of hybrid engineering and design. It remains to be seen if Honda's first plug-in crossover is released before the RAV4 Prime hits Toyota showrooms. Currently Toyota appears to still be leading the market of PHEVs, but they are behind several competitors like Chevy's Bolt, Nissan's Leaf, Hyundai, and Tesla with regard to BEV models (of which they currently offer none). And similarly, as I've mentioned before, having owned several Chevy Volts I would prefer to buy a used Volt EREV/PHEV over a used Prius or Hybrid Civic for the same price/mileage.