they leak like a sieve, unless they have the door cassette are re-sealed 
Water pump propellers break, genuine VAG one is plastic but most aftermarket ones are metal so easy fix 
Coilpacks fail like most 20vt's 
i must have changed about 30 rear door locking units on mark 1 leons in the 3.5 years i worked there so they can be arse as you have to remove them as the door locks and never unlocks 
  
Good cars tho 100% underdog, people say they handle like poo but i never thought they were that bad when i worked for them 
  
also check its a legit 225 as alot of people put the 225 steering wheel on 210 models