Greenworks 40V MO40L517

In this greenworks 40v mo40l517 review, the short answer is that the Greenworks 40V MO40L517 is the cheapest self propelled electric mower in our 2026 guide at $399.99, and it lands at number 9 of 9. It pairs a 21-inch steel deck and rear-wheel drive with a 5.0Ah battery and charger in the box. That price undercuts the higher ranked Greenworks 60V and 80V models in this guide. However, its 3.6-star average from 311 Amazon ratings is the weakest satisfaction score in the group. As a result, this is a value-first pick for smaller lawns and price-conscious shoppers, not a long-term flagship.

The hardware story is familiar: a brushless motor, a 20.28-inch cutting width, and a steel deck that Greenworks says runs about three times quieter than gas. In practice, the rear-wheel drive with variable speed does the pushing on slopes, which means less fatigue on half-acre lots. On top of that, the 4-in-1 system covers mulching, bagging, side discharge and turbo leaf pickup, so one machine handles fall cleanup too. Seven cutting positions let you adjust as the season changes, and the LED headlight supports early morning or evening mowing. Meanwhile, the 73.9-pound body and 5.0Ah battery keep cutting sessions short, and the 3-year limited tool and battery warranty covers both.

By contrast with the 60V and 80V Greenworks mowers ranked above it, this model trades runtime and owner satisfaction for the lowest upfront price. Even so, $399.99 buys a complete kit: the mower, a 5.0Ah battery, and a charger that also feeds 75 or more other Greenworks 40V tools such as trimmers and blowers. That shared battery platform is the strongest argument for anyone already invested in the Greenworks 40V line. That said, a 3.6-star average from 311 ratings and a 3-year warranty point to a budget machine, so skip it if you mow a large lawn every week. Buy the Greenworks 40V MO40L517 if the lowest upfront price decides your choice.