A fuel economy expert couple traveled 1626.1mi on a single tank of diesel in a Passat TDI, averaging 84.1mpg, a world record for a passenger car.
“John and Helen Taylor, the Australian hypermilers who made news in the United States in 2009 by averaging 67.9 miles per gallon in a tour of the 48 contiguous states, recently added another record to their considerable tally. The couple drove 1,626.1 miles in a 2012 Volkswagen Passat TDI SE from Houston to Sterling, Va., breaking the Guinness record for the longest drive in a passenger car on a single tank of diesel fuel.
They departed May 3 and passed through nine states, averaging 84.1 miles per gallon during the excursion, and finished on May 5. By Wednesday the Taylors were on a plane, en route to their home in Australia.
“We drove the Passat only two days prior to the record drive, and test results showed figures of 93, so we were very encouraged,” Mr. Taylor wrote in an e-mail, referencing the miles per gallon he and his wife observed in pre-drive testing. “We believed we could reach Sterling Shell Station, Va., which we managed to achieve without running out of diesel.””