It all depends on what the dealer wrote when the first registered the car.
If the dealer couldn't be arsed, putting in all the detail, then this is why log books have little or know real detail of the car. With all log books you can amend th details about the car at no cost, and get a fresh log book sent back to you if it really bothers you that much.
Again this is the difference in service between a good dealer and a average dealer.