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2010 Volkswagen Jetta TDI Cup Edition: Cold Weather Start [w/video]

The 2.0-liter turbo diesel in our long-term 2010 Volkswagen Jetta TDI Cup Edition is a very modern mill, so we were curious how it would handle starting in the frigid clime of northeastern Ohio this time of year. Diesel engines typically have three vulnerabilities when it comes to cold weather starts: the fuel, the battery and their glow plugs. First, the new Ultra Low Sulfur diesel fuel we all use begins to gel at a higher temperature than the old fuel. Sulfur is also a lubricant, and with less of it, the fuel pump has to work harder in cold temperatures to keep the thicker diesel... Read More

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    Long Term: 2011 Volkswagen Jetta TDI: January 2012
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    Stellar fuel efficiency is still the name of the game when it comes to our long-term Volkswagen Jetta TDI, as it's averaging well over its EPA-estimated 9.4L/100 km city and 6.7 highway in our hands. In fact, with a deft throttle foot, it's not terribly difficult to crest the 5.6L/100 km plateau ...