Just giving this thing a little bump while reporting in that I've beaten CMR4 in 3 of 6 championships. Just finished the 4WD Advanced Championship. I had a rough go at the end in the UK rally, but fortunately had won almost all of the rallies in the championship so I was well ahead on points. I don't know whether to try the Group B or 2WD Advanced next...
oh, and by the way, I've been updating my initial post on the first page of this thread to try and keep a list of all the games I beat this year--it won't be a long list.