If I remember correctly, you can drive both the Opel and Vauxhall models in the PAL version. They are all pretty much identical, except that some Vauxhall models have different body colours than their Opel relatives. The Vectra is the best example, I bought myself the Vauxhall version since it has a yellow and orange paint chip which you can't find on the Opel version. I am not sure if there are any other differences.
