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EPA FTP 75

&

J1321 TYPE II Fuel Consumption Procedure

SAE J1321 TYPE II

STANDARDIZED CONSUMPTION TEST METHOD FOR COMMERCIAL TRANSPORTION VEHICLES

The Environmental Protection Agency Federal Test Procedure 75, commonly known as EPA FTP-75, are a series of tests defined by the US Environmental Protection Agency (EPA) to measure tailpipe emissions and fuel economy of passenger cars in all new vehicles currently being sold in North America.

EPA FTP 75 is a regulated federal test

Legally required for all new vehicle makes & models

Audited and controlled by federal government agencies

Test Mandated by the Energy Tax Act of 1978

North America compliance guidelines  

 

 

EPA FTP 75

1-888-909-8149

Fuel consumption rates of engines used in transportation vehicles is challenging to test on a dynamometer per EPA FTP-75 due to equipment and facility constraints.  Therefore the the Society of Automotive Engineers (SAE) issued an alternative method to evaluate engine fuel performance. The Fuel Consumption Test Procedure-Type II, Product Code J1321, published 2012-02-06, describes a rigorous engineering fuel consumption test procedure that utilizes industry accepted data collection and statistical analysis methods to determine engine fuel consumption rates.  The test procedure may be conducted on a test track or on a public road under controlled conditions, as supported by extensive data collection and data analysis constraints. The on-road test procedure is offered as a lower cost alternative to on-track testing.

 

Accuracy obtained from the use of this test procedure can be +/-1% when properly executed. The following basic rules must be applied to this procedure to ensure valid test results:

a) A single test is inconclusive. A single test result may be an indicator. Test results must be repeatable to have validity;

b) The more variables controlled, the more conclusive the results;

c) All test procedures are accurate within prescribed limits. If the component, system or vehicle being tested by a given procedure shows a degree of improvement which is equal to or less than the accuracy limit of the procedure, an additional number of tests should be conducted to prove validity.

 

These standardized and recognized procedures are suited to evaluating the fuel consumption to be reported to consumers so that they can compare one product to another, specifically when testing the microENERGY Fuel Saver device. 

 
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