A Japanese motor team won the fuel-efficiency Shell Eco-Marathon race Thursday in a small town north of London, completing 15.9 km with just 4.836 milliliters of gasoline and beating out 45 other teams from around the world.

The consumption rate translates into an astounding 3,288 km per liter of gasoline but is still short of the 3,600-km-per-liter record marked in a similar race in Scotland last year.

Hisanari Nakane, 39, leader of the five-member team Fancy Carol, was delighted with the result.

"All the hard work has paid off. It is a brilliant result for us and shows that we were right to persevere over the winter building this incredible machine," he said.

The team's winning car, driven by Nakane's 11-year-old son, Kohei, completed 10 laps of the oval race track at the Rockingham Speedway.

The Fancy Carol team was declared the winner after engineers from Shell Global Solutions measured the amount of fuel consumed.