They're generally reliable unless abused - main culprits for blow-ups are boyracer types winding the boost up on turbos with no supporting mods, and/or putting 91 octane fuel in them. I've had my current GTB for about 5 years and the only thing I've had to replace outside of tyres and normal planned servicing was a MAP sensor at $40 (second-hand) to get back to full boost again.
Mine is a twin-turbo, the cambelt job (incl idlers/tensioners/new waterpump etc all genuine parts) was just on $1k all up from my local mech, IIRC about $650 of it was parts - not a cheap job but no worse than a lot of other cars (and less than most V6s etc), and only needs doing every 100,000km (maybe less often on newer ones).
Going by stories I've heard from ex-Subaru owners who have migrated to Audi/VW etc looking for more luxury, the maintenance costs on those are really in another league.
I think if you're looking for cheapest to run overall, you're probably best with a smallish naturally aspirated Toyota or Nissan from late 90s/early 00s. More complex new turbodiesels may be slightly more economical but likely to more than make up for it in maintenance costs IMO.
Last edited by GravelBen; 10-03-2014 at 02:30 PM.
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