I love my 2005 Ford Mustang convertible. One of my favorite features is the ability to change the colors of the dashboard lights. I am also very impressed by the sound quality, even when the top is down. If I could add any feature, it would be an audio input for plugging an ipod or other device directly into the sound system. This is a new feature available for the 2007 model.
The vehicle has been extremely reliable. I did have electrical problems with it following the installation of my alarm, but that was due to the installer.
I did have some traction issues last winter. At that point I just bought some bags of water softener salt and placed them in the trunk. That seemed to resolve the problem.
I would not recommend this vehicle for anyone who needs to carry more than two adults. There is very little back seat space and a full sized adult in the back seat would be very uncomfortable.