I got this A3 convertible used in Florida over 4 months ago. It is mint except for the fact it arbitrarily refuses to start. Yesterday it would not start in the morning, ran fine in the afternoon, would not start in the evening. It won't even turn over today and no dash lights or any indication of any power. This happened the first time a month ago. Had to leave it sit to get into the mechanic for four days. Tow truck came to pick it up and it started fine! Mechanic could find nothing wrong with it.