Hi there.Looking to buy a wrangler, or cherokee trailhawk , 3.6 pentastar or 3.6 pentastar engine. Honest opinion are they good engines? can they be trusted? Will they last 200K miles? I don't care about anything else, but I don't want blown engines at 40K miles. Been in different forums, and some , like tesla are fanatics. I am seeking honest opinion about buying a wrangler or cherokee or grand cherokee. Year 2019 -2021
I have the 3.2 in mine, 70+K miles. It's not a perfect engine. There are known issues with the valvetrain, more specifically rocker roller bearing failures and some valve seat issues as well. Such problems are not 'common', but we see them on the forums. If out of warranty, they can be costly repairs ($2-$3K).
There are oil cooler problems too, they are flimsy and prone to cracking/leaking. Haven't had the problem on mine, we see that usually at 70+K miles, though some see it early (especially when oil filter housing cover is overtightened).
Other than that, it's a decent engine, I think.