Back in January at the Detroit Auto Show, BMW spilled the beans that they would launch clean diesel versions of the X5 and 3-series later this year for sale in all fifty states. The X5 xDrive 35d and 335d will use the dual turbocharged version of BMW's 3.0L in-line 6 six cylinder diesel engine and be equipped with a diesel particulate filter and urea injection system to meet US Tier 2 Bin 5 emissions requirements. My friend Jonny over at AutoFiends has now come up with some photos of what appears to be the 335d testing out in the Nevada sunshine. Of note in these photos is that circle just behind the rear wheel. Apparently that is the cap for re-filling the urea tank. The tank will likely hold about 7-8 gallons of urea solution and will only need to be refilled about every 15,000 miles or so. Given the infrequent refill intervals, it would seem likely that BMW will integrate that filler better on the production model, perhaps even putting inside the trunk. Hopefully they don't leave it like this prototype.
[Source: AutoFiends.com]


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