I own a VW diesel that gets 45 mpg and love it. The 07+ diesels are very clean and don't even emit any smoke. I'd love a diesel Mazda5 in a heartbeat (even better fuel economy and loads of torque). I e-mailed Mazda about the idea (or even buying a Europe Mazda5 and shipping it over) and they kindly said:
"Thanks for contacting Mazda. We appreciate the opportunity to address your inquiry.
I am pleased you took the time to bring your suggestion regarding diesel fueled vehicle to our attention. Consumer feedback is always very important to Mazda. Certainly, we want to offer exciting vehicles, and comments such as yours help us to achieve that goal.
At this time, there are no plans to introduce a diesel fueled vehicle to the US market. Research is conducted to determine what is best for the market and what is demanded by consumers.
Also, we do not assist with import/export of vehicles from another country. In order to learn what products are offered in Europe, you can visit
www.mazda.com . Shipping it to the US would not be recommended because the warranty would be voided and it may be difficult to get repairs done or parts when needed.
Rest assured I have documented your suggestion for our corporate record. These records are continuously being reviewed by our Product Planning Department in an effort to provide only the highest quality products to our customers.
Again, thank you for contacting Mazda."