I have owned for 2 years and put 55K miles on my A3 TDI.
Bought car for performance and great MPG - commute is 100 miles per day.
With 500 miles left on warranty Mechatronics unit went - first time had issues was 25K miles and dealer did software update. (it's roughly$3,200 repair if out of warranty).
At 54K miles EGR valve clogged with ash - ($800 repair & AUDI offered no help)
I called AudiUSA and got nowhere.
DO NOT BUY this car for MPG savings, you'll give it all back in repairs. Overall nice car but, I also own 2 Toyotas and I'm spoiled by the fact that they don't break...I had always heard that Audi/VW reliability issues were a problem, definitely some buyer's remorse on A3
Handling and performance, 37 MPG average is great
Car should have 100K mile warranty, AC unit doesn't cool car very well, lights should be auto on-off
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.