I just completed a 6 week business trip to Sydney and Canberra in Australia. These maps have been found to be approximately 99% accurate. From time to time I was sent out into the street where due to construction work the road was completely closed and inaccessible, but I'm sure that this development did not exist at the time the maps were made. Street names, distances or turn-by-turn directions were only inaccurate twice. The recalculation instructions were accurate when I had to find a new route due to construction; that is, once I got far enough away from the site that the GPS didn't try to just send me around in circles to get back to the block streets. In general, the cards worked very well. I have traveled to or through several Sydney suburbs as well as the city center and all directions have been very accurate with the exceptions noted above. However, I did not get beyond the Sydney and Canberra areas. I can't tell how accurate the maps are for all of Australia or New Zealand.