Biogas, as a renewable energy carrier, represents one of the possible biofuels which can be further used in firing processes with applications in both thermal and electrical processes. In Europe and worldwide there are developed methods used to capitalize this biofuel relative to its potential use in automotive applications. Romania still has a large gap to cover in terms of using its own biodegradable resources in order to produce suitable biofuels at large scale. With interest relative to this field, the present study involves applications of biogas produced by a pilot installation located at the Mechanical Engineering Faculty Multifunctional Laboratory, Politehnica University, Timisoara, using a moto-generator test rig in order to determine its suitability as a biofuel in small engine applications. The biogas was used as a standalone biofuel for the presented scenarios and the main parameters determined during the tests were: the specific consumption function of injection time, power as a function of injection time, the specific consumption function of advance to spark ignition and emissions of CO and CO₂.