short answer no, not even close to the same motor.
vw/audi parts are basically the same, some part #'s just have different specs but are manufactured the same. Audi will have more performance options.
I have an 02 Jetta with 150k. no issues only oil changes and a timing belt at 120k
I had a stageII+ 06 GTI 2.0T with 75k. no issues besides a torn early revision model DV, didnt even do the cam follower recall.
2010 Tiguan 50k no issues just oil changes and a recent haldex flush/service
2013 Passat CC 2.0T 14k no issues besides wrecking my lower control arm/tie rod/wheel bearing on Friday. Cost me 1k today.
being in control from day 1 of the car helps, personally I wouldnt go for a used audi/vw because things can add up $$$ quickly.