Can anyone tell me about their experience with the Portuguese maps in MapPoint Europe 2002?

For instance, the bridge IP1 between Setúbal and Lisboa, where our GPS records position differences with the MapPoint road of about 1 km.
Therefore, I suspect the location of some highways in Portugal.

Our experience in Spain on the other hand is the contrary: the GPS locations are exact on the road, most of the time within 5 meters.

Do the MapPoint maps in Portugal have such location errors with respect to the roads?

Are the errors due to not updated maps?

Greetings, Jack.