Pretty well.
Traffic on the new Apple Maps now represents 70% of mapping traffic on the 4G network, from 60% in the second half of 2013,
taking market share from Google maps, which is down 7ppts. This difference is even more marked over 3G where Apple Maps is up 19ppts and Google Maps is down 15ppts.
http://bgr.com/2014/08/11/apple-maps-vs-google-maps-3/
"ComScore research shows that while Apple suffered a PR disaster over maps,
Google lost 23m iPhone users in the US"
http://www.theguardian.com/technology/2013/nov/11/apple-maps-google-iphone-users
"Throughout testing, we expected to find that Google trumped Apple in every category, as it did when we first compared the two in 2012. This isnt entirely true though Apple Maps has vastly improved since it was first launched and now we conclude the
turn-by-turn navigation is a lot better than Googles offering. While there are areas that both Google and Apple can improve on, were certain that using Apple Maps wont direct you to drive into the Thames and that most of the initial issues have been fixed."
http://www.macworld.co.uk/review/re...googles-maps-still-better-apple-maps-3464377/