RE: service intervals. It's
RE: service intervals. It's hard to determine the proper maintenance intervals for a PHEV's ICE components. Since the RAV4 will default to BEV mode, the ICE will not kick in until you drive 45 minutes or more. This year I've had to force my Prius Prime into ICE mode for 5 minutes a month just to keep the seals from drying out. In a year, that's one hour of run time, or about the same as a 60 mile drive on the freeway.
I drive from 3 to 25 miles a day and it defaults to running on battery. It's always in EV mode. When we are not under quarantine I make monthly 1000 mile trips, giving the car 15 hours of hybrid mode driving. In hybrid mode the ICE only runs about 50% of the time, so the ICE sees the equivalent of about 6000 miles a year. With synthetic oil I only need to service the ICE components every 18 months or so.