2015 Prius w/110k miles - Sock it to me

100k at the latest, 50k thereafter, like the engine coolant change interval, if you want to synch. Coolant spill can be very controlled though; see second link in my signature.

every 50k would be optimum.

Yup.

 

A couple things...this is my maintenance schedule:

Oil/Filter Every 6-months or 5,000 miles
Air Filter As Needed (check every 6-months)
Cabin Air Every 12-months (Charcoal)
Radiator Coolant Every 5-years or 50,000 miles
Hybrid Coolant Every 5-years or 50,000 miles
CVT/AT Tranny Every 5-years or 50,000 miles
Spark Plugs/PCV and PCV Valve Hose/ Radiator Cap / Gas cap Every 10-years/100,000 Miles
Brake Fluid Flushed Every 4-years/50,000 miles
Throttle Body Cleaned Every 25,000 Miles
MAF Sensor Cleaned Every 25,000 Miles
Tire Rotation Every 5,000 Miles

 

I’ve finally talked myself into 12 months or 5k miles. Only putting on 3~4K kilometres per year.

 

I've wondered if anyone has done a study to compare ICE engines with hybrid's with our numerous start/stop cycles...if that shortens the life of the engine by causing extra wear-and-tear. If it wasn't a Toyota engine, I'd be changing the oil every 3,000 miles (which is what I do for my kids non-Toyota vehicles.) I know the Ford engines that have the stop/start technology don't last nearly as long at Toyota's.