@Mauritsz,

Testing TomTom NDS app for some time now and yet to have any problems with it.

I have driven in Holland many many times and it has always taken me to the correct location.
Never had it take me down a one way street in the wrong direction.

Have even tested it against a Garmin Drive Smart 61 to compare and they both took me the same way.

Had both running at the same time. (wife was watching both of them while I drive)

Have also done this test with Sygic vs TomTom NDS and they pretty much do the same roads.

As from Gas station Icons I never look at the GPS for that.

Very easy to see a Gas station looking out the windscreen as you drive.

Plus there are plenty of signs on the High Way telling me where the next Gas Station is.

I keep my eyes on the road and not on the smartphone GPS app.

You can here the voice instruction as to where to exit or change roads.