BMW 2-liter twin-turbo diesel

BMW 2-liter twin-turbo diesel

The only diesel engine to earn an award comes from BMW, and takes the 1.8-liter to 2-liter category. This engine uses two turbochargers, a small one to build up initial pressure, and a larger one for higher engine speeds.

May 18, 2011 1:09 PM PDT

Photo by: James Martin/CNET

| Caption by: Wayne Cunningham

 

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