http://www.caranddriver.com/reviews/201 ... ive-review
So 46mpg is great, but then you hear about the European cars we can't get in the US, like the diesel Cooper, or the new BMW 220d (and the previous 120d and 123d) getting over 50mpg, it makes our fuel efficient cars look like nothing special. 40mpg focus, cruze, fiesta, etc..
As stated at the end of this article,
"BMW says the humongous costs associated with meeting ultra-strict U.S. emissions meant that it wasn’t feasible to certify more than one diesel here, and that lone engine had to work for both the 3-series and the X5 SUV, which, unfortunately, ruled out this four-cylinder. That’s logical, but we still pine for a 40-mpg 3-series"
http://www.caranddriver.com/reviews/200 ... est-review
The BMW 220d gets around 56mpg US from what I keep seeing. I've seen 64mpg listed, but those are likely imperial gallons. At 56mpg, I would guess there would be a large enough market to sell it in the US?

http://www.thedieseldriver.com/2013/11/ ... es-diesel/

