Regarding when they got here and their performace, it doesn't matter. Look at the participation in here versus Kubota, Deere, and other big player forums. When I SEE a tractor dealer, it is almost never Yanmar.
I'd think of Yanmar if I wanted a deisel engine for a Marine application, even a turbo, but their inroad into tractors is NOT impressive, at least to me. In my mind, that equates to not many dealers.
Let's see 2 in eastern WA. None in Montana, Wyoming, or New Mexico. None in Nevada, none in Iowa. None in Arkansas, Pennsylvania, Vermont, New Hampshire, or Maine. None on North Dakota. None in Arkansas.
Biggest inroads seem to be east coast. That does not impress me with dealer support. Might BE a great tractor and, given their reputation in the Marine engine world, I am automatically prejudiced toward a good opinion of their engines. But their tractors will have to be a great deal for me to even consider them as an option.
Opinions vary. I THINK they're a good tractor. But try finding one when you look for a tractor dealer in a LOT of places. Good luck. So, I'd need a VERY good price to go Yanmar, if only from perceived lack of dealer support and unknown parts availability as well as warranty reputation ... in the tractor world. In the Marine engine world, they're solid, but I don't see a prop on the back of a Yanmar tractor and I doubt the Marine dealers (numerous) will support one.
Not saying they aren't deserving of top ranking at all.
Rather, I'm saying, "I don't KNOW, and therefore need a reason to even LOOK at them. That reason would be a good price break over the established brands and, of course, a dealer with inventory somewhere near, who has been there awhile and is likely to survive."
I'm currently in the L.A. area. Never SEEN a Yanmar tractor here. Thinking of up around Spokane or Idaho. I have never seen one there, either, though there ARE a couple of dealers around. Lived in Tennessee. 2 dealers now, none when I was there, years ago.
So, you all get the point. If YOU pay a premium price for a Yanmar, that's dandy and OK. I'd need a good reason and don't see it. That said, I have nothing bad to say about a Yanmar, mostly because I've never seen one in person. The ONLY one I see is on a YouTube channel (Wrangerstar) and seems solid enough, but the difficulties HE had in just getting hydraulic couplings made me laugh. If you are in the compact tractor market as a vendor, use local standard hardware and couplings! Preferably, ones WE can get locally. Apparently, that wasn't the case in Oregon, for Cody. He DID get them, but it took several trips, including people who said thety knew, and they had it in stock! Wrong ...
So, price and implement deals would be the carrots. And they aren't, as far as I can tell.
Hope all you Yanmar owners out there get great service and little trouble. I'd even expect the little trouble part. But I don't want one until I can see it working in person and see it continuing to get dealer support.
The US market is NOT easy for newcomers when there are established players already.