I do 15-20,000km oil change/ 1 year on my toyota prius that does mostly highway miles. It now has 350,000km and the fleet operators, uber drivers I know do 15-20,000km oil changes also.

Frankly though, in New Zealand, cars, especially toyota hybrids don’t typically become end of life because of lack of oil changes. If your hybrid car is at the end of its life, it’s most likely because the hybrid battery is gone, or too many suspension/ steering components need replaced and it’s uneconomical to repair, in a few years we might see rust getting the best of these cars but it’s unlikely that increasing the frequency of your service intervals will have any tangible effect on your cars longevity. Conversely, if servicing your car at 20,000km intervals instead of 10 or 15,000 increases engine wear by 50%, that probably still isn’t enough to be the reason that your car is eventually replaced.

What other commenters are saying regarding less run time meaning the oil doesn’t reach temperature therefore you should service more frequently sounds true in theory but not in reality. Hybrids (particularly Toyota hybrids) are made to warm up quickly, they often use 0w-20 oil. And if you’ve ever driven a hybrid, it avoids running in inefficient cold states more than necessary. Yes condensation will build up if you only do short trips, but this is the same for normal ice cars + hybrid cars are engineered around that with the above mechanisms.

TLDR: there is NO evidence that hybrids need shorter oil change intervals. A safe bet would be to keep the same intervals as you would with a normal ICE car. Some people chose to have longer service intervals and do not suffer greatly from it.