SE DCT owners, what’s your highest mileage?

I’ve recently learned that the older Focus generations are a lot more reliable than the newer ones. Debatable, but that’s just what I picked up from research and reading other people’s experiences. Makes me wish that I bought a MK1-2 instead, but at the same time, I absolutely adore my 2018 SE. I want her to last me as long as possible, hopefully around 250k or like 20 years. Would that be irrealistic considering their bad rep?