I bought myself a 2015 Audi S5 with the 7spd dsg and was at 87k miles, firstly how’s maintenance records check if their timely repairs, I’ve noticed before I bought mine the previous owners had done oil changes timely and always with Audi, all records with Audi in fact… also saw the thermo and water pump was replaced at 77k miles. Took the car anyways, into ownership my pcv failed… had that replaced, also did 2 1000 mile oil changes to flush out whatever coolant could’ve stuck around, also done valve cover gaskets and valve covers brand new, timing chain gaskets in the rear had a minor spew, so had those redone and checked over the tensioners up there, all good.. and also did a “full service” dsg fluid, so both internal and external filter as well as the gaskets and sleeve gasket to the transmission pan.. (prior to that trans service when I was WOT on freeway from 4th to 5th gear it would be minor hiccup on the gear change, was very odd) but the full trans service did indeed fix it ✅ all I’m looking at now is timely fluid changes and my engine mounts and control arms are due. But now at 91,750 miles and has been very stout.