Who makes the engine?
It looks like it's a Kubota engine. They're virtually bulletproof. They're loud when warming up and like any diesel, maintenance is minimal. All they need is regular oil & filter changes and the fuel and air filters changed. The only thing I recommend, if it doesn't come with one, is a restriction indicator so you'll know when to replace the air filter. Changing the fuel filter can be a problem if you don't do it right.