Drove a brand new rental Ford with all the Sync options. It was nice to be able to play music straight from my phone without taking it out of my pocket or plugging anything in. It was also nice when a call came in and a simple button push switched seamlessly from my music to the call, with good voice quality I might add. The information provided is useful and placed in areas with a focus on keeping your eyes in safer directions than some layouts, and the steering wheel button placement makes sense and also works well (for the most part) once you get used to it.
However, there are little things here and there that show the system has tremendous potential, but lacks polish you expect when it's in your automobile. I own a reasonably new Ford (2006 Freestyle.) It's been an exceptional, sturdy, and reliable car for several years now with no mechanical issues to date. My dad owns an old Lincoln Navigator with over 370,000 miles on it, still with the original engine running. Fords have been pretty good to me and my family over the years. You put in the key, turn it, and the thing runs. You push the buttons on the door and the windows go up or down. Flip a switch and the heater comes on.
You expect your automobiles to be like this. Ford Sync does not yet feel like this. "Do I push this button this way or that way?" "What word order do I need to use for this command?" "Why do I have to re-command Sync to start playing my phone's music via bluetooth every time I start my car rather than it just start automatically?" "Why does the system hang once in a while for no apparent reason?"
It just doesn't yet feel like it's reliable and responsive. I was intrigued and impressed by Sync, but it needs more polish, fluidity, refinement, and most of all consistency and reliability for it to please the masses day after day, and THIS is why Sync is the single worst factor in Ford's otherwise good reliability ratings being lowered, as mentioned above.