We rented a car to attend a funeral in Denver. The first car had obvious wheel damage, but they insisted it would be fine. It wasn't. An hour after we picked it up the "alignment" light came on and the car rumbled horribly. The office told us we needed to bring it back to the airport and trade it in. We did that and were given an "upgraded" vehicle by way of apology that ended up having a leaking tire. The tire pressure light came on within an hour and again we were told we could bring it back to the airport and trade it, but they would'nt bring us another vehicle. We couldn't do that because we were already late to the funeral. So we filled the tires every two hours for the next day and returned it at the scheduled time. Really? THEN we were charged $164 for the upgraded vehicle!!!! Worst customer service ever. Still trying to get our $164 back.