Originally Posted by ovekvam
You only pay the tax once per car. If you import a second hand car, you also have to pay this tax, but it is fortunately reduced with the the age of the car, pretty much at the same rate as the typical loss of value. Annual taxes are not higher for powerful cars.
It's exactly the same system in the Netherlands. Out of curiosity: Over here the tax was imposed to protect the local car industry (which has been non-existent for the pas 25 years), what was Norway's "excuse" ?