Hi all....
Joined your forum specifically to post about the sat nav!
Although I have a golf, you know that they are essentially the same as a Leon. The mrs has a Leon (2013) and it does not have this bug. Basically I have the same
problem with my golf sat nav. The bug was introduced about 18 months ago when VW updated the software/firmware as before that it worked fine I.e. When I turned autozoom off in the menu (as I would like it to be permanently) it stayed off.
I pursued this with vwuk and 2 separate dealers for about 9 months. As you can imagine, I was getting the same response that you've been getting and no real interest in finding a fix. I finally gave up when I insisted in taking a 'master tech' out for a drive in mine and then in an identical car they had on the forecourt. In mine, sure enough, the scale zoomed in and out whether a route was programmed or not, despite the menu saying autozoom was off. Got in the dealers golf (which was newer but with the same sat nav) and it was doing the same thing so their response was 'its supposed to do that!' My view is, they all do it because the software has a bug. Nothing is 'supposed' to be on when its switch is saying its off.
There are several threads on this on the golfmk7 forum. So if yours doesnt do it at the moment, you just want to hope your dealer doesnt update your software on your next service. The software update brings no other noticeable changes or improvements anyway, it was probably to fix previous bugs. I no longer use the sat nav in the car and use free apps on my phone instead which are massively superior to the car nav, which is a shame considering how much VW charge for it!
By the way, I only have a golf because its a company car. Had it been my own money (or it was on my list of available company cars to choose from), I'd have got a Leon instead!