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Audi A6 TDI drives to record 14 countries on single tank of diesel

by Justin King

The oil-burning sedan averaged 75.9 mpg, stretching a tank of fuel to cover nearly 1,159 miles.

Audi has officially set a new Guinness World Record with its fuel-sipping A6 TDI Ultra.

The oil-burning sedan managed to drive to 14 different countries on a single tank of fuel. The trip covered a total of nearly 1,159 miles, with an average fuel efficiency of 75.9 mpg.

Journalist Andrew Frankel and racing driver Rebecca Jackson shared time between the wheel, accumulating a total of 28 hours as they passed from the Netherlands to Hungary, Belgium, Luxembourg, France, Switzerland, Lichtenstein, Austria, Germany, Italy, Slovenia, Croatia, Bosnia and finally Serbia.

The co-pilots had to be careful to keep a light foot, aiming for an average speed of around 50 mph to minimize fuel consumption.

"In order to do this you have to be fully aware of what's going on around you and anticipate what could happen with the traffic ahead," said Frankel. "While it was normal driving in one sense, it was also a very different type of driving, but nevertheless demanding."

Powered by a 2.0-liter TDI engine, the 'Ultra' package is the most fuel efficient model in the A6 family. Drivers who are not as focused on maximum efficiency can expect to fetch up to 56 mpg in a mixed European cycle.