If you can pull codes on CEL and it's a simple exhaust fix, this would be a pretty cheap pick up. Maybe take the opportunity to upgrade exhaust.
2006 Audi A3 2.0T, 205K kms, after market wheels & deck, $3900
https://vancouver.craigslist.ca/rds/...702456584.html
If you prefer manual, this one is decent too, for the year. 2009 and after, the engine went to TFSI which is suppose to be better than 06-08 FSI.
2010 Audi A3, manual, nice looking wheels, 170K kms, $8880
https://vancouver.craigslist.ca/rch/...689786359.html