Great trip car and built like a tank. I focused on buying from an Infiniti dealer because I thought a trade-in would mean the prior owner had a good experience and a solid car because he came back to Infiniti again. I had noticed a whine from the engine area, but the dealer's service manager had three technicians listen and look at it and assured me that it was normal. I had a remote and a 10CD changer installed and was all set. The car drove great and I felt brilliant until the transmission totally failed two weeks later.
Functionality is great.
I consider myself very lucky to have such a gem. It has been a beautiful and elegant automobile to drive. I am constantly recommending Q45s to friends much to their annoyance. The Q is fast and sleek. I just love being able to pass at a moments notice.