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In an effort to demonstrate the fuel efficiency of the A4 TDI, Audi France recently invited a dozen journalists to go for a drive. The teams set off in pairs driving six A4s powered by the 2.0L TDI from their starting point in Paris. They ended their journey in Madrid Spain after covering a distance of 1,260km (783 miles). The winning team used slightly less than 17.8 gallons of diesel. If they had run out the all the fuel in the tank they could have covered almost 907 miles. That comes out to a

The 12 Hours of Sebring endurance race is going on this weekend in central Florida and Audi has a major presence their with the defending champion R10 TDI sports car. The LMP1 racers are not however the only Audis on hand with a diesel V-12 engine. The R8 V-12 TDI that was one of the stars of the Detroit Auto Show is also on hand and Audi is allowing some journalists to take some gentle laps in the concept. The reason the laps are gentle is because the R8 may have a monster 500hp 737lb-ft diesel

As a major component of the Volkswagen Group, the Audi division is already strongly committed to diesel engine technology. They build diesel versions of most of their models in Europe and they'll be bringing a diesel Q7 to the U.S. market later in 2008. The lone holdouts to the diesel cult are the R8 and TT sports cars. The latter model could be wearing a TDI badge as soon as the next Geneva Motor Show. Audi is reported to be working on diesel TT using the 2.0L engine that features in much of th

The World Solar Challenge in Australia this year featured a Greenfleet Technology division for high mileage alternative fuel vehicles. One of the top competitors was the Audi A3 TDIe powered by a 1.9L four cylinder diesel. The team of drivers covered the 3,543 km distance from Darwin to Adelaide Australia with an average mileage of 71.3 mpg (US) with peaks as high as 90.4 mpg. The special "e" series A3 is tuned for maximum efficiency and was introduced to Australia at the Sydney Motor Show. It g