**Bump**
I took delivery of my GD Elite Diesel in Mid November, and straight away noticed a few flaws in the nav system that I hadn't noticed during the test drive.
My biggest gripe is the reverse camera which does lag a fair bit. I live in a narrow street, where the only option is reversing in, and mounting the footpath to park, so the camera is a godsend, but the lag irritates me to no end. I took it back to the dealer and asked him, and he told me that was "normal" - he then showed me on another one, which did exactly the same thing. I then realised the reason why I didn't notice it on test drive is because I test drove the Active model, but bought the Elite.
The second thing that annoys me is that when my iPod is on shuffle, the nav system defaults back to normal each time I start the car, so I lose my place in the shuffle, and i have to restart it again.
The third thing is the lack of street names, as many of you have noted.
The fourth thing is the camera warnings, although after going on a 3000km road trip from Syd-Wilsons Prom and back, I did get to know it a bit better and now I understand what the different beeps mean and how they all piece together, where I've now come to the conclusion that it is fairly smart, but still slightly annoying.
The fifth thing to annoy me is the bluetooth phone. When making a call, the keypad disappears, so I can't make conference calls for work where I do need to enter a pin after dialing, or checking my voicemail, etc (as someone else also pointed out here)
I tried searching through the hyundainav.com website for any updates, but when I get to the point of filling in my details and clicking "submit", I get an error message in Korean and have no idea what it's telling me.
I certainly hope these issues will be fixed in following software updates over time. From my experience, car companies tend to actually fix these things eventually. My parents have a BMW 320d which originally had many annoying issues with the iDrive system, but in late 2010 they were all magically fixed with the latest software updates.
Having said that, the nav system is the only part of the car to annoy me thus far. Everything else is excellent - and in case anyone was interested, I made it from Melbourne to Sydney on 3/4 of a tank. Avg was 3.9L/100km with a fully loaded car (packed to the roof with tents, camp chairs, luggage and belongings of two kids!)
