The flywheel is really expensive.. If it's a new one I would not be suprised to find a 1700 pound bill, although It´s still expensive of course.. I had my gearbox, clutch, pressure plate ánd flywheel replaced for around 1500 euro's, or ~1200 pounds. This was with a second hand flywheel and gearbox and the garage billed half the hours as I bought the car there.. Yes I have experience
Also I´m questioning the conclusion a little that the problem is the flywheel.. In most cases, a weak flywheel can be noticed (vibration) around 2000/2500rpm at full throttle when you have maximum torque, usually in the higher gears (4th, 5th and 6th if you one) Juddering when moving off in first sound more like a contaminated clutch to me, do you also feel it when going from 1st to 2nd?
I'm hoping for you it's just fixed under warranty, doensn't matter what it is then
Good luck with it.. ehr... her!
£1700, sounds outrageous to me. I would seek an alternative opinion. I'm sure I've heard of people fitting normal flywheels. Perhaps ring somewhere like the Alfa workshop, Bianco Autodevelopments, or Autolusso for an alternative opinion. They should be able to give a rough estimate of replacement over the phone - obviously tell them DMF. £1700 just doesn't add up in my opinion especially if that only includes 6 hours labour. You could probably by a whole engine/gearbox from a scrap yard and get it dropped in for half that.
A new flywheel alone costs around 500-600 pounds.. When i'm taking the hourly rates in the back of my mind here in holland i'm not supprised when they ask 60 an hour, which will add up to 360 pounds for 6 hours. That's already a total of 860, without counting a new clutch and oil-ring (that sucker also costs 40 pounds
) yet.. And I'm also not too shure about the price I mentioned for the flywheel, as this is the price form an Alfa parts shop and not the dealer/stealer...