I'd wager that BMW will stocks lots of these cars on their lots to get their CAFE numbers up at that 90% of the customers who buy them won't notice the difference between the four-banger and the six, or V-8 for that matter. More important for these buyers will be suitable places to put the Hello Kitty accessories.
A Lexus GS350 AWD with Ultra Premium package is $62,000, a full $10,000 less than the four-banger Bimmer. The reviews are very good and one could safely assume resale value would also be good. No coarseness with the Lexus V-6, either. That is where I would put my money.
As an addition, the 306 hp AWD Lexus is rated at 11.1L/100km in the city, while on this test the 241 hp four-banger Bimmer returned 10.1, while the Lexus is 130 lbs lighter.