Quattro, bring on the SNOW!
2.0TDI 170 Quatttro
I too have the Siren! sounds like police are following me!
Took it for a full service last week and report came back a new turbo was required. Cost was £1200 all in from Audi main dealer, ouch!
Car is 57 plate, thus out of warranty, however only 50k on the clock and full service history.
Rang around a few Independants and researched about refurb, remanufactured, new oem etc...
Managed to get the replacement (new oem) supplied by Audi as 'Factory Good Will' as the car has a FSH and low mileage, only have to pay for fitting ~£400, thus save £800! with 2yrs warranty unlimited mileage!
Worth noting if any of you too have the same problem!