Around the world on 3 gallons? Race is on for ultimate mileage

Mon Oct 12, 2009 3:54am EDT
 
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By Chang-Ran Kim, Asia autos correspondent

HAGA-GUN, Japan (Reuters Life!) - Who says gasoline engines have reached their limit? A race to seek out the best mileage is out to prove that when it comes to frugal driving, a 50cc motorcycle engine can go a long way.

In the annual "Eco-Run" event, sponsored by Honda Motor in Japan, contenders design vehicles powered by a four-stroke 50cc engine, driving them seven laps around a track for a total 16.8 km (10.4 miles) using as little fuel as possible.

Apart from a few regulations on the vehicle's dimensions -- they must measure under 3.5 meters (12 ft) long and have at least three wheels, for instance -- the rules are simple: cover the designated distance in under 39 minutes and 20 seconds, equivalent to a minimum speed of 25 km (15.5 miles) an hour.

The mileage is calculated based on the amount of petrol consumed.

The record so far is a mind-boggling 3,435 km/liter (8,080 miles per gallon), set in 2001. On that machine, traveling the circumference of the earth would require just 12 liters (3.2 gallons) of fuel.

In the first race, held in 1981, the winner clocked 292 km/l.

"It's the ideal type of race -- perfect for our generation," said Honda's chief executive, Takanobu Ito, who made the trip to the Motegi circuit, in northeastern Japan, to watch the finals.

Under a clear blue sky on Sunday, more than 300 teams, divided into junior high, high school, college-level students and the rest, participated in the race, with helmet-wearing drivers squeezed into the hand-made machines.   Continued...

 
<p>Teams of engineers and aspiring engineers participate in the annual Honda "Eco-Run" competition in Motegi, north of Tokyo, October 11, 2009. In the event, contenders design vehicles powered by a four-stroke 50cc engine, driving them seven laps around a track for a total 16.8 km (10.4 miles) using as little fuel as possible. Apart from a few regulations on the vehicle's dimensions -- they must measure under 3.5 metres (12 ft) long and have at least three wheels, for instance -- the rules are simple: cover the designated distance in under 39 minutes and 20 seconds, equivalent to a minimum speed of 25 km (15.5 miles) an hour. The mileage is calculated based on the amount of petrol consumed. The record so far is a mind-boggling 3,435 km/litre (8,080 miles per gallon), set in 2001. Picture taken October 11, 2009. REUTERS/Chang-Ran Kim</p>