It's year 5 in June of owning our 3725RL:
Conclusion, expensive pile of crap built to poor standards, the one year warranty for so many people is really 6 months since it's stored for half the year. Designed so mice can get in, there are places I can't get to to stop them, but in the building process they could have put in measures to make it difficult for the little bastards, they didn't and likely never will.
The main AC unit has been bad since year one, Keystone doesn't care since it wasn't caught until right after the 1 year warranty expired. The unit is not serviceable per Keystone but some people have said it can be modified, we haven't needed it so we're waiting.
The hydraulic system was popping badly the first 2 years, the dealer ate part of the cost and installed heavier duty fluid. Still pops now and then but much better.
The Black/Gray tank valves have been replaced twice, leaking tanks have been repaired twice.
The big storage doors have been replaced due to swelling, the new ones are also swelling, go figure.
We have mice in the roof that nobody can get rid of, it would be nice if they did something about all of the easy access holes in these rigs. The mice are destroying whatever is up there.
The water heater stopped working on electricity this year, but still works using gas. Researching the cause, any ideas I'd be happy to hear them.
2 bad batteries even though proper usage and winter storage procedures have been used, their response, we don't make the batteries.
The hallway tile is lifting as is the tile near the heat duct by the bathtub.
The front blue LED's have been replaced 3 times, they no longer function properly, again. Not worth the effort to fix.
Some moron thought putting the junk subwoofer behind the fake fireplace was a grand idea, it wasn't, the entire fireplace rattles and the system sounds like crap.
The Montana 3725RL was expensive as 5th wheels go, I like the full welding on the chassis and the floor plan and my wife loved it so much I bought it.
Biggest.....mistake....I......have.......ever..... made......
