I also have a Westfalia. They are not cheap but well worth the money. Totally detachable and you can't tell that you have a hitch when it isn't on car.
I tow a caravan and find the camera invaluable when reversing to hitch up. I can get the tow ball right under the hitch.
It is also very helpful when backing up against a wall, using the red line on the screen you always leave sufficient room for the hatch to open.
As previously said, it is not...
I purchased a steel space saver from Mazda.
It comes with replacement black polystyrene surrounds which ensures that it fits correctly in the wheel well.
Are you running the latest maps and updated poi? I have not encountered the problems that you have had. In fact I have been impressed by the accuracy of the information and alternate route planning on my journeys from the north to the west country.
The UK owners manual suggests turning the blind spot monitor off when towing a trailer. If the trailer is picked up by the monitoring radar it will give a false reading.
Official figures can never be achieved in the real world. Have a look at the 'honest John' web site for more detail. I am averaging about 44 mph over a range of city driving and long motorway trips, which I am very happy with.
Do you mean the front or rear screen?
I have not had an issue with the rear screen, it seems to demist as quickly as any other car that I have owned.
With regard to the front screen my last car was a Mondeo with a quick clear front windscreen so I find it hard to compare. However I have not been...