I dream of 24mpg! Today, overall, I got about 12.5.
Yes, I would say 23/25...on a run a bit more...Where as M5 was 17/19...
On the other hand, anyone looking to buy such a car, having done their research, will know the trouble spots on these cars and seeing that they have all been sorted should give them peace of mind. However, you might run the risk of putting off the 'oh, that looks nice, I wouldn't mind one of those' brigade. Having said that, it might be worth trying the 'maintained regardless of expense' approach and see how it goes. Again, good luck with the sale Spike.
On the other hand, anyone looking to buy such a car, having done their research, will know the trouble spots on these cars and seeing that they have all been sorted should give them peace of mind. However, you might run the risk of putting off the 'oh, that looks nice, I wouldn't mind one of those' brigade. Having said that, it might be worth trying the 'maintained regardless of expense' approach and see how it goes. Again, good luck with the sale Spike.