Had the 1.6 16v zetec-se in the mk5 zetec-s. I had one for 3 years. and gave it some real stick. Regular oil change and servicing , cam belt at 60k changed the water pump at same time.

And had no problems with it. Great engine i'd say go for it.

The problem is the same with these as with any other engine. if there abused (servicing and use) they will inevitably let you down just try find one with a reasonable history.

There all Alloy too so a much lighter than the 1.8 and 2 as they use a cast iron block. So have the weight advantage.