I asked my friend with a new Focus what differences he’d found with the Sync4 compared to his previous Focus with the Sync3 system.
Apart from the more user friendly 13″ screen and it working faster he said the main thing he found was that “it worked” apparently he’d had numerous problems with the Sync3 system.
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!