Jorge Chapa

French MicroJoule concept car gets 8,923 miles per gallon

by , 03/18/08

microjoule, experimental vehicles, efficient vehicle, fuel efficient vehicle, french efficient vehicle, eco-marathon 2008, french technical school, st. joseph la joliverie, mpg, shell eco marathon challenge, eco marathon

What is the most efficient vehicle on the planet? And more importantly, how far can it go on a single liter of gas? The Microjoule is your answer, getting over 3,794 kilometers per liter, or approximately 8,923 miles per gallon! Looking less like a car than an amoeba-on-wheels, the Microjoule is the design of students from the French Technical School, St. Joseph La Joliverie, who are set to compete in the Eco-Marathon 2008 to be held in Europe this coming May.


The Microjoule project was started in 1985 as their entry in the Shell Eco Marathon. The Eco Marathon is yearly race held at the Nogaro Motor Circuit in France. It involves over 200 teams from 25 different countries, and the idea is to simply create a vehicle that goes as far as possible with the leas amount of fuel. Naturally, the idea is that the participating vehicles produce the fewest emissions that they can possibly produce.

The Microjoule has participated every year in the European version of this race (a different one is held in the US every year). Since 1992, the Microjoule has won this race every single time and has broken the world record 6 times. So what is the secret? It uses gasoline, just like any other vehicle, but it only really sits one person, and has no bells and whistles. Still, that is one very impressive fuel efficient vehicle. The Eco Marathon will be held on May 22.

+Microjoule @ St. Joseph La Joliverie (French)
+Shell Eco Marathon

Via Autopia

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11 Comments

  1. chrisp68 January 2, 2009 at 5:29 pm

    Lennergy,
    How do you compress the air? This in itself is not a very efficient process.

  2. Most Fuel Efficient Car... March 20, 2008 at 11:29 pm

    [...] Via: inhabitat.com [...]

  3. Lennergy March 20, 2008 at 5:14 pm

    This is fantastic but, why not use cars only driven by Compressed Air?
    This car´s exist, http://www.AirCar...
    The best
    Leo Mac Ender

  4. French MicroJoule conce... March 19, 2008 at 1:35 pm

    [...] Mahesh Basantani wrote an interesting post today onHere’s a quick excerpt What is the most efficient vehicle on the planet? And more importantly, how far can it go on a single liter of gas? The Microjoule is your answer, getting over 3,794 kilometers per liter, or approximately 8,923 miles per gallon! Looking less like a car than an amoeba-on-wheels, the Microjoule is the design of students from the French Technical School, St. Joseph La Joliverie, who are set to compete in the Eco-Marathon 2008 to be held in Europe this coming May. (more…) [...]

  5. Frogbeef March 19, 2008 at 12:02 pm

    The site really appeals to me! I have to register!

  6. Jorge Chapa Jorge Chapa March 19, 2008 at 6:45 am

    Hey Guys!, we plucked the number from the Microjoule’s page, which says that “Le record du monde battu à 6 reprises dont le dernier à 3794km parcourus avec 1 litre d’essence.” Using my rather rudimentary skills of french, this translates to “Six-time world record holder, the last time achieving 3794km per 1 litre of fuel”

    Being an architect, thus terrible at math, I say that:

    3794 km/l * 0.62m/km/l (approx) = 2353mi/l * 3.792/gallon= 8923 mi/gallon (approx)
    So obviously Wired got it from the Shell Eco Marathon results of last year, while we got their figures, so they are different… but, as stins says, much better than 25mpg

    Thanks for keeping us honest though :)

  7. GeoIsla » French ... March 18, 2008 at 10:36 pm

    [...] Inhabitat, [...]

  8. stins March 18, 2008 at 8:07 pm

    I read on a couple other posts that it got closer to 7,000 MPG:
    http://www.ecogeek.org/content/view/1446/69/
    http://www.treehugger.com/files/2008/03/french_car_gets_7150_mpg.php

    Either way…it sure beats my 25 MPG car…

  9. stins March 18, 2008 at 8:05 pm

    I’ve read other posts about it that report numbers closer to 7,000:
    http://www.ecogeek.org/content/view/1446/69/
    http://ecomodder.com/blog/2008/03/15/super-mileage-competition-nets-7148-mpg/
    http://www.treehugger.com/files/2008/03/french_car_gets_7150_mpg.php

    Either way…it’s sure better than my 25 MPG car…

  10. Umlud March 18, 2008 at 3:39 pm

    Ummm…. someone has the maths wrong. One story says the “mileage” was 7150 miles/gallon, and another one says it was 3794 km/litre. These two values aren’t the same, though.

    3794 km/l = 2357 mi/l = 8924 mi/gallon

    7150 mi/gallon = 1889 mi/l = 3040 km/l

    There seems to be a discontinuity in the maths (or in the reporting).

  11. Umlud March 18, 2008 at 3:38 pm

    Ummm…. someone has the maths wrong. One story says the “mileage” was 7150 miles/gallon, and this one says it was 3794 km/litre. These two values aren’t the same, though.

    3794 km/l = 2357 mi/l = 8924 mi/gallon

    7150 mi/gallon = 1889 mi/l = 3040 km/l

    There seems to be a discontinuity in the maths (or in the reporting).

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