I see this thread is a little older, but I'll post my experience for anyone who googles to find others experiences with the 5th gen 3.6 L, just like I did. I have a 2019, big horn, crew cab, 4wd, with the 3.6 L pentastar. I have 75,000 miles on it now. I do lots of driving for my job (mostly highway/paved driving, never towing, on relatively flat Kansas roads). My initial experience with the pickup had been generally positive. I get an average of 20-21 mpg (hand calculated), the ride is nice, handles well, and the engine performs sufficient for my driving. A few cons with this drivetrain I've noticed have been an annoying lag/dead zone with the accelerator pedal. The first 1/4 of range of the pedal does nothing, and then if you don't have a feel for it, the pickup will jerk when response finally is found. A pain when trying to inch back to a trailer or move a little when parking. The other thing to note is this thing struggles to utilize that 8th gear at interstate speeds of 75 mph+. Even on flat Kansas roads, I rarely can get it to use the 8th gear, leading to reduction of mpg to apprx 18 mpg. I had a couple quality control things that were taken care of early on in its life. A support bar in the passenger seat broke, despite no one of significant weight sitting in it, which led to a replacement of the whole seat, had some squealing factory break pads/calibers swapped out, and even had some rust appearing under the hood that was required to be addressed. All covered under warranty, but defects for sure. Despite those defects, I was generally pleased with the pickup, until recent events. About 8 weeks ago the pickup began throwing cylinder misfire codes. It was at 75k miles so I figured I'd change out the spark plugs and possibly ignition coils and see if it remedied (note, this is a pain in the rear on this pickup and engine due to the placement). In the process, I found milky oil in the throttle body and noticed a low coolant reservoir. Put it back together due to my suspicion of head gasket problems and scheduled it for a repair shop. Got it into the shop 11/22/22, they confirmed they thought head gasket. Through a lot of shop delay, waiting on parts, the holiday etc, they finally tore the thing down a few weeks later, only to find 2 cracked cylinders as well. This created weeks more delay of repair and waiting for parts, to the point where I cross my fingers that I'll finally have the pickup back 1/6/23. I wrote Ram regarding the issue, as it's obviously ridiculous to have that kind of breakdown in 3 years, that few of miles, when it was well taken care of and never worked pulling/off-roading etc. The customer care response I received was essentially this "we are sorry this happened, but you are out of your 60,000 mile power train warranty and we aren't going to do anything. Have a nice day". This breakdown has cost thousands of dollars, been a major inconvenience to me, and cost me time with clients/work, and that's all I get from customer care? For crying out loud, even Applebees gives you a free appetizer if you wait 5 minutes longer than expected for some food to be cooked, without you asking, just to keep you a happy customer. Not to mention, with just a repair of those 2 cylinders and head gasket, I'm not left with great confidence that the rest of the engine won't have further problems down. I hope others do well if they already have a ram, but this experience and response by Ram is enough for me to say see ya to the pickup and brand.