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Pros and cons
I have a major issue with the BMW system in that the real time traffic info does not work for the first 20+ miles. There is no T-Mobile signal at my house but there is after 1mile but the car refuses to connect to it. If you park the car in signal coverage for 1hr or so it is fine but leave it out if coverage for an hour or so and it doesn't reconnect. TomTom works fine just not the first mile.
Someone else has reported the same when leaving underground multi storey carpark.
TomTom routing is certainly much better but doing a tidy installation of a TomTom is not easy. No real place to mount it.
Have not been to impressed with the traffic when it's working. Twice it has told me roads are closed (motorway slip roads) and given me long diversions when in fact there was only a lane closed.
Some of the BMW maps are nice but they are not as upto date as the TomTom ones. Plus less frequent updates and more expensive updates.
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