Photos: Audi Q5 and VW Touareg TDI

CNET Car Tech takes a look at an Audi and a Volkswagen that use 3-liter turbocharged V-6 diesel engines.

Volkswagen got a lot of mileage out of its 3-liter turbocharged V-6 diesel engine at the 2008 Los Angeles Auto Show. It appeared in the Touareg TDI and the Audi Q5 TDI, signaling Volkswagen's launch of diesel SUVs in the U.S. This engine uses a complex emissions system that lets Volkswagen and Audi sell the vehicles in all 50 states. A particulate filter gets rid of the bigger stuff, while a solution called AdBlue breaks down nitrogen oxide emissions. Also on hand was the much more powerful TDI-powered Volkswagen Baja 1000 competitor.

See photos of the Volkswagen Touareg and Audi Q5 TDIs.

See all coverage of the 2008 Los Angeles Auto Show.

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