While I strongly disagree with @Topher's aggressive verbiage, I think the truth is there in the last post. The disagreement is not warranty based. It's solely about delivered vs. promised functionality. The latest version delivers on voice and maps, but according to the OP, does not deliver on his interpretation of the AP as-promised. In this case, the as-promised portion is based on advertising material at the time, I'm assuming. I haven't seen any contracts that stipulate the vehicle's technical functionality. I could be wrong, though.