Commenting to follow. I am interested in a Leon Cupra estate near me so might benefit from some of the tips you get OP.
Whats wrong with 25k miles? Especially if you're looking at a 2017.
1.8 is a dry clutch DSG if you are looking at automatic, which doesn't officially have a service interval but generally considered less reliable than the wet clutch boxes.
Water pump and thermostat housing is a common issue on EA888 Gen 3 engines. Apart from that though they are good cars and generally reliable.
There's a plus, right there then
I'd like the DSG, I am tempted by that. What can be done to make it less unreliable if there's no service schedule? A little off putting...
I thought all DSG 7 speeds were the wet clutch variant though, but i'm probably wrong on that!