Perhaps the Echo's hallmark feature is the 190cc Briggs & Stratton gas engine that powers it. Echo 21-in Self-Propelled Mower $549 at Home Depot ProsCons Key Specs Fuel type Gas Engine 190cc Briggs & Stratton Cutting Deck 21 in. Open GalleryEasy StorageWhen not in use, the Echo mower has quick-release levers that allow the handle to be folded forward over the mower, which can then be stood on end. Overall ThoughtsIf you like the power of a gas mower, prefer to bag your grass, and appreciate that well-striped look of a manicured lawn, we think you’ll be pretty happy with this mower from Echo. Other Gas Mower Recommendations