My dad bought his mk4 Gti brand new and it was serviced under Vw dealers network meticulously
Then at 80k the engine blew up ( granted it was the crap 2.0 8v)
Was re built with genuine parts and managed another 20k before same thing happened again
My dad never goes over 3.5 revs lol
I just replaced it with a AUQ
So, cars (or engines in this case) can be lemons, it's not just down to the owners