The Best Greenworks 21-Inch Self-Propelled Lawn Mowers Compared

Best for: Suburban yards already on 40V tools

Pros

• Lightweight alloy steel chassis
• Rear wheel drive traction
• Single lever 7-position adjustment

Cons

• Single 5.0Ah battery limit
• Lacks integrated LED headlights

The Greenworks 40V 21″ Brushless Cordless serves as an accessible entry point into self-propelled electric cutting on the brand’s expansive 40V platform. Built with a durable alloy steel deck providing a 20.28-inch cutting width, this machine utilizes an efficient brushless motor engineered to generate increased torque while maintaining quiet, emission-free operation. Power is supplied by a single 5.0Ah lithium-ion battery that delivers up to 45 minutes of continuous runtime on a full charge, though actual duration varies depending on yard conditions and operator handling. The drive system powers the rear wheels to provide reliable traction across hilly or uneven lawn sections, assisted by 8-inch front wheels for balanced rolling resistance.

Deck management on this 40V self-propelled cordless lawn mower centers around a single-lever 7-position height adjustment mechanism, enabling operators to modify the cutting height rapidly without setting each wheel individually. Lawn maintenance flexibility is provided by a 3-in-1 configuration, allowing operators to switch between rear bagging, side discharging, or mulching clippings back into the soil. With an item weight listed at 21.7 pounds and dimensions measuring 65.35 inches deep by 21.65 inches wide by 33.07 inches high, it offers a remarkably manageable footprint for maneuvering tight corners. The tool and battery are backed by a 3-year limited warranty, tying directly into an ecosystem compatible with more than 75 secondary garden tools.

This model suits suburban property owners maintaining small to medium lawns who want reliable rear-wheel drive assistance without added complexity. However, because it comes equipped with a single 5.0Ah battery and lacks onboard automatic battery switching, it yields ground to dual-battery models once property sizes push past standard quarter-acre boundaries or when dealing with persistently damp, overgrown spring grass that drains batteries more rapidly.

Best for: Intuitive walking pace matching on slopes

Pros

• Intuitive Smart Pace propulsion
• Dual battery auto switchover
• Up to 60-minute runtime

Cons

• Substantial 84-pound total weight
• No integrated headlight

Best for: Early morning mowing and leaf cleanup

Pros

• Integrated LED headlight
• 4-in-1 turbo leaf pickup
• Variable speed drive control

Cons

• Single battery port setup
• Substantial 73.9-pound weight

Identified by model number MO40L517, the Greenworks 40V 21in Self-Propelled Lawn Mower builds upon basic 40V engineering by adding enhanced versatility and early-morning convenience features. This mower pairs its brushless motor with a 21-inch steel deck, generating quiet cutting power that operates three times quieter than standard gas machinery. Rear-wheel drive traction is complemented by adjustable variable speed control, letting operators match propulsion directly to their preferred walking cadence. A distinctive hardware feature on this unit is the front-mounted integrated LED headlight, which allows property owners to finish maintenance sessions in early dawn or late dusk conditions without visibility limitations.

A key operational advantage of the greenworks MO40L517 is its 4-in-1 mowing management system. Beyond the traditional operations of mulching, side discharge, and rear collection bagging, this platform introduces a dedicated turbo leaf pickup setting designed to lift and collect yard debris efficiently in autumn. The tool ships with one 5.0Ah battery and a charger, fitting seamlessly into the 75-tool 40V line under a 3-year warranty. With an item weight listed at 73.9 pounds, this machine carries substantial steel heft that keeps the deck planted across bumpy terrain while resisting vibration.

Homeowners who maintain properties with heavy tree cover or those constrained to mowing before work will appreciate the integrated headlights and leaf vacuuming capabilities. Nevertheless, property managers needing uninterrupted power for broader acreage may find the single-port battery arrangement restrictive compared to dual-battery models that seamlessly switch cells on the fly.

Best for: Substantial yards up to three-quarter acre

Pros

• Dual battery automatic switchover
• High-torque 3200 RPM motor
• Generous 4-year warranty

Cons

• Dedicated 60V ecosystem lock
• Requires dual battery charging

Stepping up into heavier residential capacity, the Greenworks 60V 21in Self-Propelled Lawn Mower provides a significant boost in cutting speed and endurance. Identified by model number MO60L424, this machine is driven by a 60V brushless motor operating at 3200 RPM while producing 60 percent less noise than gas-powered alternatives. The kit includes two 4.0Ah batteries and features dual-port Auto Switchover technology. When the primary battery runs dry, the system automatically engages the second cell without operator intervention, producing over 60 minutes of uninterrupted cutting time capable of handling properties up to three-quarter acre on a single charge.

The steel deck on the greenworks MO60L424 provides a 20.28-inch cutting width and houses a 4-in-1 cutting system supporting mulching, bagging, side discharge, and turbo leaf pickup. Drive dynamics are managed through a rear-wheel self-propelled transmission with on-the-go speed adjustment, letting users alter forward velocity instantly when entering thick patches of grass or ascending inclines. High-output LED headlights maintain forward illumination, while the total package weight registers at 65 pounds. The tool stands out within the lineup by carrying an extended 4-year limited tool and battery warranty, operating alongside more than 75 secondary tools within the 60V platform.

This 60V configuration represents the ideal sweet spot for homeowners managing substantial turf areas who demand gas-equivalent blade speed to conquer tall fescue, St. Augustine, or wet growth. The primary trade-off sits in the battery platform itself: buyers invested in the 40V or 24V lines cannot interchange power packs with this specialized 60V housing, making it a distinct ecosystem commitment.

Designed specifically to eliminate battery swapping downtime while maintaining 40V ecosystem compatibility, this configuration of the Greenworks 40V 21in Self-Propelled Lawn Mower features an advanced drive system and extended onboard power storage. The package includes two 4.0Ah batteries and a dual-port compartment equipped with automatic switchover, yielding up to 60 minutes of cumulative runtime. It features an alloy steel deck with a 20.28-inch cutting width and an efficient brushless motor that minimizes electrical resistance while optimizing torque output across varied grass densities.

A standout ergonomic component of this greenworks 40v 21 brushless mower is the Smart Pace self-propelled drive system. Instead of requiring users to manipulate dials or levers while walking, Smart Pace senses the tension applied to the handle and smoothly matches the mower’s forward speed to the operator’s natural stride. Cutting height modifications are executed via a single lever adjusting across seven individual stops. Clippings can be managed via 3-in-1 rear bagging, side discharging, or fine mulching. The mower rolls on 8-inch front wheels, carries an overall weight of 84 pounds, measures 62.25 inches deep by 21 inches wide by 23 inches high, and carries a 3-year warranty covering both the unit and power packs.

For shoppers seeking the best greenworks cordless lawn mower on the 40V system for varied terrain, this dual-battery setup delivers substantial range and intuitive operation. It relinquishes top billing only if you require integrated LED illumination or want the specialized autumn leaf pickup modes found on 4-in-1 decks.

Best for: Heavy-duty grass and dense turf cutting

Pros

• SmartCut grass sensing technology
• 60-minute rapid charger included
• Space-saving vertical garage storage

Cons

• Single battery port capacity
• Standard 3-in-1 deck layout

At the apex of voltage output in the brand’s walk-behind lineup sits the Greenworks 80V 21″ Brushless Cordless, cataloged under model number MO80L00 (manufacturer part MO80L410). Engineered for demanding workloads, this machine delivers gas-equivalent cutting performance from an 80V lithium-ion architecture. It includes one 4.0Ah battery alongside a 60-minute rapid charger, offering up to 45 minutes of high-powered runtime. The brushless motor is governed by proprietary SmartCut technology, an active sensor system that monitors blade resistance and automatically ramps up motor RPM when thick vegetation is encountered, returning to baseline speeds in light grass to preserve battery reserves.

Constructed around a heavy-duty 21-inch steel deck offering a true 21-inch cut width, the greenworks MO80L00 incorporates rear-wheel drive with variable speed adjustments to conquer steep embankments and thick thatch. Clippings are handled through a versatile 3-in-1 system supporting mulching, bagging, or side discharge, with height governed by a 7-position single lever. Maintenance and storage are streamlined through push-button starting, folding handles, and vertical storage capability that reduces the mower’s storage footprint by up to 70 percent in sheds or garages. The machine weighs 64.2 pounds and is protected by a 3-year limited warranty.

Homeowners comparing this platform to dedicated commercial gear or those browsing a broader greenworks 80v mower lineup will appreciate the raw torque and rapid one-hour charge cycle. However, because it runs on a single battery port, properties exceeding a half-acre will require either secondary 80V packs or intermittent pauses while the rapid charger replenishes the cell.

Best for: Complete property trimming and clearing setups

Pros

• Complete 3-tool combo kit
• Dual 24V cross-tool compatibility
• Turbo deck button function

Cons

• Shorter 35-minute mower runtime
• Requires managing multiple chargers

Providing an all-in-one yard maintenance solution, the Greenworks 48V system (model 1341002-VK) utilizes dual 24V battery architecture to achieve 48-volt brushless output. This high-performance combo kit bundles the 21-inch self-propelled mower with a 12-inch string trimmer and a cordless leaf blower, powered by two 5.0Ah 24V batteries, an additional 24V 2.0Ah USB battery, and two chargers. The mower’s brushless motor delivers up to twice the standard torque, allowing the self-propelled drive to navigate slopes up to a 21-degree incline with confidence.

The greenworks 48v lawn mower deck is built from durable steel, featuring a full 21-inch cutting width, 7-position single-lever height adjustments ranging from 1 3/8 inches to 4 inches, and bright LED headlights for low-light visibility. Its 4-in-1 discharge functionality includes mulching, bagging, side discharge, and an onboard Turbo button for clearing heavy growth patches. The mower provides up to 35 minutes of cutting time on the paired 5.0Ah packs (rated for up to a half-acre), while the leaf blower delivers up to 10 minutes on high using its 2.0Ah pack. The string trimmer incorporates a TorqDrive system adding 30 percent more power alongside a variable speed trigger. Storage is simplified via collapsible handles and vertical storage capability that saves up to 70 percent of garage floor space, with the mower weighing an agile 43 pounds under a 3-year warranty across all included tools.

This comprehensive combo serves new property buyers, townhome owners, or DIY enthusiasts looking to establish an entire lawn tool arsenal in a single sweep. Its limitation lies in raw endurance: with 35 minutes of mower runtime, larger properties will demand additional 24V batteries to finish extensive cuts without stopping to charge.