My previous Samsung phone synced flawlessly with my Toyota Prius so that all I had to do was say "Dial <name>" and it would search my contacts and dial the correct number (or give me choices if it wasn't sure).
The S5 will not sync my contacts no matter what I have tried. I found a suggestion on another forum that said because I used Google as well, and my contacts were syncing with Google, that I needed to make sure all the Google contacts were in at least one group. That totally didn't work. Then I tried to add a contact just on my phone & not synced to Google. That didn't work either. It seems that the new phone will not sync contacts at all.
Since this worked with my previous Samsung, I'm assuming that this is a problem exclusive to the S5. Does anyone have the fix for this?