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2009 Volkswagen Touareg V-6 TDI Preview

2009 Volkswagen Touareg V-6 TDI Preview

By Jeff Youngs, December 31, 2008
Critical Knowledge:
  • 50-state emissions compliant diesel
  • 3.0-liter turbocharged V-6 engine
  • 221 hp and 407 lb.-ft. of torque
  • Estimated 25 mpg highway
  • Highway cruising range of more than 600 miles
Introduction
Introduced for the 2004 model year, and designed in conjunction with the Porsche Cayenne, the Volkswagen Touareg was VW's first SUV. The 5-seat Touareg delivered a blend of car-like handling with truck-like off-road prowess despite its low stance, according to the manufacturer. The 2007 model year saw the return of the diesel-powered Touareg, with a 10-cylinder twin-turbo engine that delivered better acceleration and fuel economy than its gasoline-powered counterparts. It's price-at the top of the Touareg model range-and the fact it wasn't 50-state emissions compliant led to its removal from the U.S. lineup. The Touareg received a significant update in 2008 that initiated a name change to differentiate the model from the prior years (it was now the "Touareg 2"). In 2009, Volkswagen is re-introducing a diesel powerplant to the Touareg. This time around, the automaker has chosen an efficient 50-state emissions compliant V-6 TDI powerplant.

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Hardware
The powerplant under the hood of the 2009 Volkswagen Touareg V-6 TDI is a 3.0-liter turbocharged V-6 engine. It is rated at 221 hp and 407 lb.-ft. of torque. Utilizing common rail fuel injection and an advanced catalytic converter system, it meets the most stringent emission requirements in California. The engine is also 50-state emissions compliant. A standard 6-speed automatic transmission sends power to the full-time all-wheel-drive system. Although 2009 EPA fuel-economy estimates have not been released, Volkswagen is quoting 17 mpg city and 25 mpg highway for the Touareg V-6 TDI. With a 26.4-gallon fuel tank, the Touareg V-6 TDI has an estimated highway range of more than 600 miles, according to the automaker.

Technology
The 2009 Volkswagen Touareg V-6 TDI has a ULEV-II compliant 50-state turbodiesel engine. Volkswagen partly accomplishes this by sending the exhaust from the engine through an oxidizing catalyst and a particulate filter. From there, the spent gasses are injected with a special solution called "AdBlue." This clear, non-toxic, and safe-to-handle liquid is an aqueous urea solution that is broken down by hot exhaust gases into ammonia, the automaker explains. The ammonia splits the nitric oxides into harmless nitrogen and water, VW claims. According to Volkswagen, the 5-gallon reservoir of AdBlue stored in the 2009 Touareg V-6 TDI is designed to last about 10,000 miles before it needs to be refilled.

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