SAENIS Efficycle started in 2010 and GNDEC has been participating every year in the competition since its commencement. The event provides an opportunity to students for learning and understanding various engineering concepts by implementing them practically. For the first 4 seasons GNDEC participated under the team name "MANIACS". In 2014, the team name was changed to "REVENTON". In 2014 edition of the event, Team REVENTON from GNDEC bagged overall SECOND POSITION out of a total of 250 teams all over INDIA.

Efficycle is an intercollegiate design competition for undergraduate and graduate students where teams have to design and fabricate an energy efficient entirely human powered three-wheeled vehicle. The vehicle must be aerodynamic, highly engineered and ergonomically designed. The design should be commercially viable as a product and should be attractive to the consumers because of its visual appearance, performance, reliability and ease of operation.