01 passat engine life
 

I am new to vw, bought an 01 passat turbo last year.
what is the expected engine life?
It had 55k when i bought it, then it acted up and the warranty payed for a new shortblock and turbo at 60k.
now the dealer tells me i need to decarbon for $250 +/-

will this new engine last more than 60k miles?
did I buy a high maintenance car?