I really like my MKT. It's the first vehicle I've owned that didn't have me wanting to start looking for its replacement within a year. Granted, I'm deeply in the red on it, thanks partly to the selling dealer, extended warranty and gap insurance, so I'll have to keep it for probably at least another 3 years or more.
My '14 currently has 120,000 miles on it. It does have some minor issues, but nothing major mechanical to really speak of.
A 2019 with 25k for $26,000 seems pretty good, depending on how it's truly equipped. My '14 stickered for over $56,000 new, and it's only missing the factory tow package, refrigerator console (I installed the "simple" one out of a Flex) and rear seat entertainment, as far as major options go. I'm not entirely sure about the 2019s, but the opening moonroof was an option, as a plain glass non-opening roof was standard. Mine does have the Elite Package and inflatable rear seatbelts. According to the original window sticker, it was a special order vehicle.
The Tech Package is great, and I'd have a real hard time living without adaptive cruise control. My Advanced Park Assist hasn't worked for a while, and I'm still trying to figure out why. I'm leaning towards a bad switch. My climate and audio control touch panel has flaked out, so I've disconnected it internally until I find a good used one (almost everything can be operated via the touchscreen or voice), as Ford parts is showing it as discontinued - so much for auto makers being mandated to make parts for 10 years. The faux stitched seams on the front passenger's door armrest has been splitting open, and I'm still trying to come up with a good fix.
Would I buy another one? Probably. My mom liked mine so much, that she traded in her '15 MKX for a Certified '16 with 16k miles almost identical to mine. Hers has factory tow and refrigerator console, but not the inflatable rear seatbelts.