Just looked again. It says excluded is: Gearbox, axle and drive line mountings.Are you sure the gearbox and axle are excluded?
It is poorly drafted and maybe it means the mountings for the g/box and axle.
Putting that to one side and assuming that the g/box and axle are indeed covered, I would not buy a car at a premium price after I read this warranty. The list of exclusions is comprehensive rendering the warranty very far from comprehensive.