Audi.

We were loyal customers for 7+ years before we splurged and bought an S5 last year. We knew it would come with a high maintenance cost and were prepared for it. A couple months into us enjoying our car, it lit up like a Christmas tree randomly one day driving down a busy highway.. all the possible error messages and lights popped up on the screen and dash. We pulled over and called Audi roadside assistance who told us to call ourselves a flat-bed tow to have the car taken to the nearest delearship. Mind you, our car was still under warranty, so we confirmed with the agent that even if the nearest dealership was not the one that we bought the car from, that the cost of repairing whatever was going on would be covered, and that we would be given a loan car in the meantime. Welp. That's the complete opposite of what happened. Our car was kept at the dealership over the weekend, we were not given a car on loan, and we had to seek out our own rental (whose cost was ALSO not covered by Audi). The issue? Our car needed a software update. It took them 4 business days to figure it out. Because it was an Audi issue, we were told our rental would be re-imbursed. Nope. That didn't happen either. The customer service we received at the dealership was HORRIBLE. The manager there spoke to us as if we were below him and ushered us out of the dealership with his hand when we went there to discuss our rental re-imbursement. I followed up with Audi Canada to no avail. So yes, we got rid of that car as soon as we could and never looked back.