BMW 335d and X5 xDrive35d

BMW wants to ensure the warmest possible reception for the 2009 BMW 335d and 2009 BMW X5 xDrive35d, so the company has made it impossible for you to make the number one most aggravating mistake: accidentally refueling your diesel vehicle with gasoline. 

In a recent press release, BMW notes that --

The Incorrect Fuelling Protection System fitted to all BMW diesel-powered models is designed to allow only filler nozzles for diesel fuel to enter the filler neck. The filler neck of these models is fitted with a locking system that can only be released by a standardized diesel filler nozzle. An unleaded gasoline nozzle with its smaller diameter cannot make the same connection and its access is blocked.

Apparently, the company isn't just targeting American drivers who may be unaccustomed to using the diesel pump, noting that Germany's automobile association reports an average of 5,000 "misfueling" incidents each year.