Shell Eco-Marathon

The Shell Eco-marathon challenges high school and college student teams from around the world to design, build and test energy efficient vehicles. With annual events in the Americas, Europe and Asia, the winners are the teams that go the farthest distance using the least amount of energy.


Official Rules and Regulations

These rules are designed to enable safe, technically sound and fair competition.


About the 2011 Rules


The rules intentionally leave many design parameters, technologies and tactics unspecified in order to stimulate creativity and allow for a competition of novel ideas and solutions.

The Shell Eco-marathon has been challenging students from around the world to design and build energy efficient vehicles for many years with the ultimate goal to drive them at the annual events in the Americas, Europe and, as of 2010, Asia.

In line with our long standing tradition of keeping the Shell Eco-marathon competition challenging and relevant to current automotive and energy trends, the Organisers will allow ‘Battery Only’ powered vehicles to participate in both the Prototype and Urban Concept category from the 2011 season onwards. This ‘Battery Only’ energy option, commonly referred to as ‘Plug-In’ will complement the already existing Electric Mobility categories of ‘Solar’ and ‘H2 Fuel Cell’. Further details on this latest addition can be found in Article 81.

We strongly encourage all competitors to read these Official Rules thoroughly and completely. Although we have made every effort to highlight significant changes to last year’s rules in Blue, some of the existing regulations are often overlooked, causing disappointment during the events. 

Fuel or Energy Types

The vehicles may use one of the following fuel or energy types:

 Internal Combustion

  • Shell FuelSave Unleaded 95 (EU and Asia) / Shell Regular 87 (US) Petrol/Gasoline **
  • Shell FuelSave Diesel (EU) / Shell Diesel (Asia and US) ** 
  • Shell Gas To Liquid (100% GTL)
  • Fatty Acid Methyl Ester (100% FAME)
  • Ethanol E100 (100% Ethanol)

**The gasoline and diesel provided by the Organisers are the Shell fuels prevalent in the local markets where the events take place. For testing and turning purposes in the home countries where Shell FuelSave Unleaded 95 and Shell FuelSave Diesel are not available it is recommended to use the locally available Shell Unleaded 95 or Shell Diesel instead.

Electric Mobility

  • Hydrogen
  • Solar
  • ‘Plug-In’ Electric

What’s Different about the 2011 Rules?

Chapter I rules apply globally to all Shell Eco-marathon events. Please also review Chapter II, to be released closer to the regional events, which forms part of the official rules and is specific for the region you are going to compete in.

The 2011 rules have been revised based on the valuable input and comments provided by many participants as well as on the learnigs drawn from last seasons. Here is an overview of the major changes that were made in the 2011 Rules:

1. Fuel options:
    a. LPG fuel option removed
    b. Battery only (‘Plug-In’) fuel option introduced
2. Electric-Mobility category has been introduced, which includes:
    a. Hydrogen fuel cells
    b. Solar
    c. Battery only (‘Plug-In’)
The results for this new category will be expressed in km/kW. All other fuels (gasoline, diesel, GTL, FAME, ethanol) remain in the Internal Combustion category, with results expressed in km/litre or mpg.
3. All Clutch systems used prior to 2011 must be reviewed with respect to whether the clutch system remains not engaged at engine start up.
4. For liquid fuel systems
    a. No filters or valves allowed after the fuel tank
    b. For gasoline/ethanol teams capable of 1500 km/litre, the whole fuel system must be removable for weighing
    c. Starter light brightness has been specified.
5. UrbanConcept:
    a. Vehicle weight limit increased to 205kg (previously 160kg)
    b. Wheel rim dimensions are now 13-17 inches (previously 16 or 17 inches)
6. Hydrogen fuel cell vehicles:
    a. Extra ventilation point required in driver compartment
    b. PTFE (teflon) sealing tape not allowed

NOTE: Other changes have been made to tighten/clarify the rules and these should also be noted.

Chapter II Rules

The Shell Eco-marathon regional events in the Americas, Europe and Asia each have Chapter II Rules specifici to the competition in that region.

You can download a copy of the Rules for the region you will be participating in below. Be sure to read the local requirements and deadlines to ensure you meet all the requirements.

Americas Rules information

Europe Rules information

Asia Rules information