57 votes
Ct200h or Prius 2zr-fxe because the headgasket will fail at 150k and you have to replace the pcv often because it gets stuck open and burns oil...
Did have to do head gaskets in the 4runner ten or so years ago but it hasn't had any other real issues.
Just from a bit of personal experience and a few friends stories, the 2ZR-FE. For a motor used in so many of their cars (2009-2012 Corolla and 2010-2015 Prius) you wouldn't think they'd be blowing head gaskets at all. I have the same motor in my Scion xD and blew the HG at 150k miles.
I'll toss in the 7M-GE/GTE. Pretty much guaranteed to have a failed head gasket due to under-torqued head bolts unless you caught it ahead of time. Usually happened at the back due to excessive heat at the rear of the engine.
I just made a key to a 22 toyota corolla cross with 9200 miles on it and the head gasket was blown, was at an auto auction, the wreck wasnt that bad at all I was really surprised, I've made keys to 10x worse and didnt burn coolant lol
My HG went bad around 180k, with no EGR cleaning by the previous owner. It started to consume coolant pretty quick and smoke came out of coolant tank lol
Replaced HG is a few weeks, cleaned air intake manifold and EGR. Now, I’m hoping to get many more miles from it :)
I have a 2010 with 218k miles loses zero oil but I lose coolant think I have a head issue. But I've put about 20k on the car just topping off coolant once a week. I would say the head gasket issue is pretty high I've never had a car with a bad head until now.
Mine went at 220k, 2015 Prius V. Fixed it myself but I had the tools/time/interest. If you’ve overheated already it’s probably warped the head, cheaper to get a new (used) engine, have them put a new head gasket on that engine before it goes it to ward off future trouble.
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