I purchased an 2003 Audi A4 1.8 T pre-owned at 26K miles in Oct 2004. I have brought the vehicle in for regular schedule maintenance at 30, 40 and 50K at roger beasley Audi in austin, tx. On Jan 16, 2006, at 55450 miles, engine started knocking and oil warning light came on. I had the vehicle towed to dealership which turned out to be sludge problem and estimate for repair is $2500. I was made aware about the extended warranty of 8 yrs for sludge issue Audi and VW had issue back in 2004 but dealer would not repair the issue under warranty since there's no record of oil change at 20K. Since I purchased the vehicle pre-owned, I'm unable to provide any oil change documentation for 20K service. To sum this all up, there's a record of oil changes during 10K (previous owner got service done at a dealership), 30K, 40K and 50K maintenance. I have contacted Audi customer relation dept w/O any success. If I pay this repair out of pocket, I'm afraid there might be other issue relating to this after engine is clean out of all sludge. With many consumers out there with the same dilemma, I think Audi should step up and take care of the repair. Any help in this matter would be greatly appreciated.

- Sugar Land, TX, USA