Over the past few years, the constant rise in the price of fuel has prompted the development of new technologies to reduce fuel consumption. To address this concern heavy equipment manufacturers have been introducing new models integrating technologies, such as the diesel-electric hybrid suggesting improved fuel efficiency. In order to validate these claims FPInnovations has developed a methodology aimed at conducting controlled tests to measure fuel consumption. Tests were conducted on three different models of bulldozers of the same power class in order to compare their fuel consumption and energy efficiency. The evaluation of these three bulldozers was carried out on a controlled test track where standardized working conditions were reproduced. This report presents the findings of these tests conducted in Chipman, New Brunswick, in cooperation with J.D. Irving Limited. The test had three main objectives: 1) develop a standardized procedure to measure the fuel consumption of the bulldozers in a controlled environment; 2) compare the fuel consumption of three different models (drive trains) of bulldozers (electric, hydrostatic and standard) for a typical work cycle; and 3) quantify the variation in fuel consumption resulting from the differences between the engine/drive train technologies of the test machines.