Why does no one warn you how bad the roads and how every sat nav does not work here? We have been taken down very scary dirt tracks which pass for SP roads here...use a local map to stay on bigger roads otherwise you really risk your lives and nerves.
Both BMW and Garmin were hopeless.
We had a 2series
BMW which was lovely on motorways but useless on dirt tracks. Even the better roads have massive potholes. Glorious location but hire a chauffeur if you can or take local buses/trains to avoid the stress.