I'm looking to own a 3.2 MV6 Automatic Saloon. Got to be a low mileage one. 
Please PM me if you have one to sell.
A well lookeed after 'high milage' is generally better than an unloved, uncared for low milage car. Milage isn't the B all & end all,   
   and you'll find people's cars here have anything from 'low milage' to 250k miles plus
 and you'll find people's cars here have anything from 'low milage' to 250k miles plus   
 
You're absolutely right. Mileage is a kind of rule of thumb scale to measure how knackered a car is and obviously it is not absolute IMO. I reckon I can't have a that low mileage one as most of the miggys are at least 8-10 years old  by now. 
TBH if a car has too low mileage I'll be suspicious about that one - was the driver reluctant to drive it? Why (it's such a lovely car to drive)? If the driver was reluctant to drive it then very likely he was reluctant to maintain it as well. I will try to steer clear from such cars. 
Does it have to be an MV6?
I already have an 2.6 Elite which I'm looking to sell for repair/spare (I'll post another thread for it in here). I drove my mate's 3.2 MV6 and I liked it lot more than mine in terms of power, handling and interior.