Stay away if you want to update GPS maps beyond the included version (dated 2011) - Navteq does not have them.
11 January 2015
Summary: This unit has one MAJOR flaw. No map updates. You are instructed to go to Navteq.com but their site does not list this model or any updates for JVC unit starting with model KW-NT30 (mine is this review model number with a dash between the W and N - KW--NT30HD).
JVC CUSTOMER SUPPORT SUCKS! I received my head unit and it was ...
29 September 2014
Summary: JVC CUSTOMER SUPPORT SUCKS! I received my head unit and it was missing the AV I/O cord. I called JVC, as it stated to do inside. They said I could purchase one for $34.42 and they would waive shipping. That's not how things work in America!
Summary: Radio receiver is good as is the CD/DVD transport mechanicals. The system has a clunky interface in most modes, wasted space and cartoonish icons. No ability to fast forward or rewind in MP3 files regardless of media. Navigation in a larger SD card sucks, uses filenames not IDv3 tag info.
Summary: So I thought that this unit was great! The main problem with it is that I can't get map updates, and the maps are from 2009. Installed the unit last year and took it on a trip way on up into Ontario. While driving through Toronto (I hate driving through Toronto!) the thing was spazing out..