Who gives a hoot how common a car is?
When I chose a car, I don't give a stuff:
a) How common it is
b) What the badge on the front is
c) What sort of image it has
Provided the car I chose is built the way I want to, looks the way I want it to, drives the way I want it to, offers the performance I want it to and puts the grin on my face I want it, I don't give a stuff if its made by Kia, VW, BMW, Ford or Rolls Royce. I had a Ford, I loved it, and I don't care how naff the Ford badge was.
Simiarily, i'd never be put off buying say a Subaru Impreza by the image if it was the car I really wanted. Becuase who honestly cars what people in traffic you've never met, never speak to and will never see again think about you becuase of your choice of car?
The reason why I ended up with a BMW and why my next car will almost certainly by a BMW is becuase their cars are the cars which closest fit my preferences. It's nothing to do with image - infact I wish people didnt think they are super awesomely prestige becuase then perhaps they'd be better value for money. Currently, a used BMW is pretty crap value - £10k gets you a 6-7 year old 330i...