My Passat is currently at VW Drift Bridge Epsom for a routine cam belt replacement - it's 4 years old and has done 61k miles

The garage has informed me that the turbo is leaking and that it needs replacing - cost £1400 and needless to say I didn't extend the warranty when it expired last April. I have seen no evidence of this as acceleration and MPG have not deteriorated.

At the routine service 3 months or so ago I was told by the same garage that there had been a recall and they had replaced the injectors free of charge - I notice from the invoice that the cost would otherwise have been £970

It might be that I’m being cynical, but do you think that it's possible that the garage somehow damaged the turbo during the fitting of the injectors, or perhaps they're trying to re-coup the money for the injectors (although I assume that they would have been reimbursed by VW for this)

I've asked for them to get the manufacturers comment about whether this is a reasonable life for the turbo in the hope that they will pick up some of the cost of the repair, but I don't hold out much hope and so any additional commentary that I can use against them would be appreciated!