A mulching lawn mower cuts grass clippings into small pieces and returns them to the lawn, but the right choice depends on yard size, grass conditions, and how much pushing you want to do. My best overall pick is the Greenworks 60V 21-Inch Self-Propelled Mower, which pairs a wide deck and self-propelled drive with two batteries. The PowerSmart 22-Inch Self-Propelled Gas Mower stands out for buyers who want a larger gas-powered deck, while the Greenworks 40V 16-Inch Push Mower suits smaller lawns and simpler storage. The main tradeoffs are battery runtime versus gas refueling, and deck width versus maneuverability. Read on for the full breakdown and the factors that can help you choose.
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Key Takeaways
- The Greenworks 60V 21-Inch Self-Propelled Mower ranks first because its wide deck, powered drive, and two included batteries address both mowing effort and runtime.
- Gas models dominate the wider-deck options in this lineup, including several 21-inch mowers and the 22-inch PowerSmart; buyers trade simpler refueling for engine upkeep and noise.
- Compact cordless mowers serve a different job: the 16-inch Greenworks and KOMASTY are easier to store and steer, but require more passes than the wider decks.
- Self-propelled drive is most useful on slopes or larger lawns; on a small, level yard, a push mower can be lighter in routine handling and avoids drive-system complexity.
- Mulching flexibility varies: some listed models explicitly offer side discharge or three-in-one cutting, while others are presented chiefly as mower options, so check the included configuration before buying.
| Greenworks 60V 21-Inch Self-Propelled Lawn Mower with Two 4.0Ah Batteries |  | Best Overall for Larger Lawns | Voltage: 60V | Cutting width: 21 inches | Motor: Brushless | VIEW ON AMAZON | See Our Full Breakdown |
| Greenworks 40V 16-Inch Push Lawn Mower with 4.0 Ah Battery and Charger |  | Best Compact Cordless Pick | Voltage: 40V | Cutting width: 16 inches | Battery: 4.0Ah | VIEW ON AMAZON | See Our Full Breakdown |
| PowerSmart 21-Inch Gas Lawn Mower, 144cc, 2-in-1 Mulching and Side-Discharge |  | Best for Straightforward Gas Mulching | Engine: 144cc 4-stroke OHV | Cutting width: 21 inches | Cutting options: Mulching and side discharge | VIEW ON AMAZON | See Our Full Breakdown |
| SENIX 21-Inch Gas Push Lawn Mower, 144cc, 2-in-1 |  | Best for Uneven Lawns | Engine: 144cc, 4-cycle gas | Cutting width: 21 inches | Functions: Mulching and side discharge | VIEW ON AMAZON | See Our Full Breakdown |
| PowerSmart EasyGlide 21-Inch 3-in-1 Push Gas Lawn Mower |  | Best Gas Pick for Flexible Clipping Handling | Engine: 144cc 4-stroke OHV | Deck width: 21 inches | Deck material: Steel | VIEW ON AMAZON | See Our Full Breakdown |
| BILT HARD 21-Inch Self-Propelled Gas Lawn Mower |  | Best for Larger Yards | Cutting width: 21 inches | Engine: 201cc 4-cycle OHV | Torque: 9.0 ft·lb | VIEW ON AMAZON | See Our Full Breakdown |
| Worx WG745 40V Cordless 17-Inch Lawn Mower |  | Best Compact Cordless Pick | Model: WG745 | Voltage: 40V | Deck width: 17 inches | VIEW ON AMAZON | See Our Full Breakdown |
| PowerSmart 22-Inch Self-Propelled Gas Lawn Mower, 170cc |  | Best for Fast Coverage | Model: DB8622S | Engine: 170cc 4-stroke OHV | Drive: Self-propelled rear-wheel drive | VIEW ON AMAZON | See Our Full Breakdown |
| KOMASTY 40V 16-Inch Cordless Electric Lawn Mower |  | Best for Short Mowing Sessions | Power: 40V | Motor: Brushless, up to 3400 RPM | Cutting width: 16 inches | VIEW ON AMAZON | See Our Full Breakdown |
| BILT HARD 21-Inch Gas Push Lawn Mower with 144cc Engine |  | Best Simple Gas Push Mower | Engine: 144cc, 4-cycle gas | Engine power: 3.4 HP | Torque: 5.75 ft-lb | VIEW ON AMAZON | See Our Full Breakdown |
| PowerSmart 21-Inch Self-Propelled Gas Lawn Mower with 170cc Engine |  | Best for Slopes and Uneven Yards | Engine: 170cc OHV | Cutting width: 21 inches | Deck material: Steel | VIEW ON AMAZON | See Our Full Breakdown |
| Greenworks 60V 17-Inch Push Lawn Mower with 4.0Ah Battery and Charger |  | Best Compact Cordless Mulcher | Voltage: 60V | Deck width: 17 inches | Battery capacity: 4.0Ah | VIEW ON AMAZON | See Our Full Breakdown |
| LawnMaster CLMF4819X 48V MAX 19-Inch Brushless Cordless Lawn Mower |  | Best for Cordless Mulching Without Bagging | Model: CLMF4819X | Cutting width: 19 inches | Motor: Brushless | VIEW ON AMAZON | See Our Full Breakdown |
| mulching lawn mower | Cutting width | Cutting height | Engine |
|---|---|---|---|
| Greenworks 60V 21-Inch Self-Pr | 21 inches | — | — |
| Greenworks 40V 16-Inch Push La | 16 inches | — | — |
| PowerSmart 21-Inch Gas Lawn Mo | 21 inches | 1.5–3.9 inches | 144cc 4-stroke OHV |
| SENIX 21-Inch Gas Push Lawn Mo | 21 inches | 1.25–3.75 inches | 144cc, 4-cycle gas |
| PowerSmart EasyGlide 21-Inch 3 | — | — | 144cc 4-stroke OHV |
| BILT HARD 21-Inch Self-Propell | 21 inches | 1.2–3.75 inches | 201cc 4-cycle OHV |
| Worx WG745 40V Cordless 17-Inc | — | — | — |
| PowerSmart 22-Inch Self-Propel | 22 inches | 1.5–3.9 inches | 170cc 4-stroke OHV |
| KOMASTY 40V 16-Inch Cordless E | 16 inches | 1.37–2.95 inches, 5 positions | — |
| BILT HARD 21-Inch Gas Push Law | — | 1.0–3.0 inches, 6 positions | 144cc, 4-cycle gas |
| PowerSmart 21-Inch Self-Propel | 21 inches | 6 settings, 1.5–3.9 inches | 170cc OHV |
| Greenworks 60V 17-Inch Push La | — | 6 positions, 1.5–3.15 inches | — |
| LawnMaster CLMF4819X 48V MAX 1 | 19 inches | 6 positions, 1.4–3.4 inches | — |
More Details on Our Top Picks
Greenworks 60V 21-Inch Self-Propelled Lawn Mower with Two 4.0Ah Batteries
The 60V motor, 21-inch deck, and rear-wheel self-propulsion make this the most capable cordless mulching choice in this group for a lawn with slopes or thicker grass. Adjustable drive speed helps match the mower’s pace to the ground, while the four-mode cutting system lets you mulch when clippings are manageable and switch to bagging, side discharge, or leaf pickup when conditions change. Its two batteries are listed for up to three-quarters of an acre per charge, though actual coverage depends on the lawn and mowing technique. Compared with the smaller Greenworks 40V 16-inch push mower, this model covers more ground with less pushing, but it is a larger, more involved choice for a compact yard. Buyers already using Greenworks 60V tools can also share its battery platform.
Pros:- Rear-wheel self-propulsion with adjustable speed helps on slopes and in thicker grass
- Mulching, bagging, side discharge, and turbo leaf pickup provide flexible clipping management
- Includes two 4.0Ah batteries
- Compatible with Greenworks 60V tools
Cons:- Actual coverage varies with terrain, grass conditions, and mowing technique
- Its 21-inch self-propelled format is less compact than the Greenworks 40V 16-inch push mower
Best for: Homeowners with medium to larger lawns, slopes, or thicker patches who want cordless power and several ways to handle clippings.
Not ideal for: Owners of small, flat lawns who want the lightest, simplest push mower; its self-propelled system and larger deck may be more mower than they need.
- Voltage:60V
- Cutting width:21 inches
- Motor:Brushless
- Drive:Rear-wheel self-propelled, adjustable speed
- Batteries:Two 4.0Ah batteries
- Coverage:Up to 3/4 acre per charge, depending on conditions
- Cutting modes:Mulch, bag, side discharge, and turbo leaf pickup
- Warranty:4-year limited tool and battery warranty
Our verdict“Choose this for a larger or more demanding lawn where cordless self-propulsion and flexible mulching options matter.”
Greenworks 40V 16-Inch Push Lawn Mower with 4.0 Ah Battery and Charger
This 16-inch cordless push mower suits smaller yards where easy handling matters more than covering ground quickly. It mulches or rear-bags clippings, and its five height positions let the owner adjust the cut as the lawn changes. The listed coverage is up to one-third of an acre per charge, but grass conditions and operator technique affect that figure. Compared with the larger Greenworks 60V self-propelled mower, this model trades deck width, drive assistance, and extra cutting modes for a lighter design that is simpler to maneuver and store. That makes it a sensible match for a relatively even lawn, especially for someone who already owns Greenworks 40V tools. Its narrower deck means more passes on a larger property, and it has no side-discharge mode listed.
Pros:- Lightweight design is easier to maneuver than steel-deck mowers
- Mulching and rear-bagging options
- Five cutting-height positions
- Includes a 4.0Ah battery and charger and works with Greenworks 40V tools
Cons:- A 16-inch cutting width means more passes across a larger lawn
- Coverage per charge varies with grass conditions and mowing technique
- No self-propulsion or side-discharge mode is listed
Best for: Owners of small, fairly level lawns who want a lightweight cordless mower and already use or plan to use Greenworks 40V tools.
Not ideal for: People mowing larger, sloped, or persistently thick lawns who would benefit from a wider deck and self-propulsion like the Greenworks 60V model.
- Voltage:40V
- Cutting width:16 inches
- Battery:4.0Ah
- Included:Battery and charger
- Coverage:Up to 1/3 acre per charge, depending on conditions and technique
- Height adjustment:5 positions
- Grass handling:Mulching and rear bagging
- Warranty:3-year limited tool and battery warranty
Our verdict“Pick this for a compact, level lawn where light handling and cordless convenience outweigh faster coverage.”
PowerSmart 21-Inch Gas Lawn Mower, 144cc, 2-in-1 Mulching and Side-Discharge
The 21-inch steel deck gives this push mower a broad cutting path, while its two modes let clippings return to the lawn or exit through side discharge. Its six height settings, from 1.5 to 3.9 inches, provide room to adapt the cut to lawn conditions. The 144cc four-stroke engine has an auto-choke to ease starting, and the foldable design helps reduce storage demands. Compared with the SENIX 21-inch gas mower, the PowerSmart offers a similarly wide deck and six height choices but has smaller listed rear wheels; SENIX specifies 11-inch rear wheels for uneven ground. The main compromise here is basic clipping flexibility: unlike the PowerSmart EasyGlide, this model has no bagging option listed, and its push design calls for the operator to supply all the forward effort.
Pros:- 21-inch cutting width covers more ground per pass than the Greenworks 40V 16-inch mower
- Mulching and side-discharge modes
- Six cutting-height settings
- Foldable design and auto-choke starting system
Cons:- Push operation requires manual effort across the whole lawn
- No bagging option is listed
- Listed rear wheels are smaller than SENIX’s 11-inch rear wheels
Best for: Buyers seeking a wide-cut gas mower for mulching or side discharge who do not need grass collection or self-propulsion.
Not ideal for: People who want to bag clippings, avoid manual pushing, or prioritize larger rear wheels for rough ground.
- Engine:144cc 4-stroke OHV
- Cutting width:21 inches
- Cutting options:Mulching and side discharge
- Cutting height:1.5–3.9 inches
- Height settings:6
- Deck:Steel
- Wheels:7-inch front and 10-inch rear
- Warranty:2-year limited warranty
Our verdict“Choose it for a broad-cut gas mower focused on mulching and side discharge, provided you can manage without bagging or drive assistance.”
SENIX 21-Inch Gas Push Lawn Mower, 144cc, 2-in-1
For buyers who mulch on uneven ground, the SENIX stands out for its 8-inch front and 11-inch rear wheels, paired with a 21-inch deck and six cutting heights. It can mulch or side-discharge, with the height range extending from 1.25 to 3.75 inches. The supplied information recommends it for lawns up to half an acre. Compared with the PowerSmart DV8621C, the SENIX has larger listed wheels and a slightly lower minimum cutting height, which may better suit bumpy lawns or a shorter cut. Both are gas push mowers with two clipping modes, so neither provides self-propulsion or a listed collection bag. Buyers wanting to gather clippings should look instead at the PowerSmart EasyGlide, which adds bagging. The included tool kit and two-year warranty round out this straightforward gas option.
Pros:- 11-inch rear and 8-inch front wheels are suited to uneven ground
- Mulching and side-discharge functions
- Six cutting-height settings from 1.25 to 3.75 inches
- Includes a tool kit and a two-year warranty
Cons:- Manual pushing can be tiring on slopes or across larger lawns
- No grass-collection bag is listed
- Requires gas rather than cordless battery power
Best for: Owners of uneven lawns up to about half an acre who prefer a gas mower and want mulching plus side discharge.
Not ideal for: Buyers with steep or large lawns who need self-propulsion, or anyone who wants a grass-collection bag.
- Engine:144cc, 4-cycle gas
- Cutting width:21 inches
- Functions:Mulching and side discharge
- Cutting height:1.25–3.75 inches
- Height settings:6
- Wheels:8-inch front and 11-inch rear
- Recommended lawn size:Up to 1/2 acre
- Warranty:2 years
Our verdict“Consider the SENIX for an uneven, moderate-size lawn where larger wheels matter more than bagging or powered drive.”
PowerSmart EasyGlide 21-Inch 3-in-1 Push Gas Lawn Mower
The EasyGlide makes the strongest case among these gas push mowers for buyers who want choices after each pass: its three modes cover mulching, bagging, and side discharge. That flexibility matters when clippings are short enough to mulch on one mow but need collecting after faster growth. The 21-inch steel deck and six height positions match the broad-cut format of the PowerSmart DV8621C, but the EasyGlide adds a bagging option that the DV8621C does not list. Its 144cc four-stroke engine includes an auto-choke and primer to support starting, while ball-bearing wheels are intended to ease maneuvering. It remains a manual push mower, though, so buyers with slopes or a large lawn may prefer the Greenworks self-propelled model. Gas operation also means it does not share that mower’s cordless battery setup.
Pros:- Mulching, bagging, and side discharge cover three clipping-handling needs
- 21-inch steel deck with six height positions
- Auto-choke and primer assist with starting
- Ball-bearing wheels support easier maneuvering
Cons:- Push design requires manual effort
- Gas engine does not offer the cordless convenience of the Greenworks 60V mower
Best for: Homeowners who want a gas mower that can mulch, collect clippings, or side-discharge as lawn conditions change.
Not ideal for: People who need self-propulsion for slopes or want a cordless mower with shared battery compatibility.
- Engine:144cc 4-stroke OHV
- Deck width:21 inches
- Deck material:Steel
- Mowing functions:Mulching, bagging, and side discharge
- Cutting height positions:6
- Cutting height range:1.5–3.9 inches
- Wheels:7-inch front and 10-inch rear
- Starting features:Auto-choke and primer
Our verdict“Choose the EasyGlide if bagging alongside mulching and side discharge is worth more to you than self-propelled operation.”
BILT HARD 21-Inch Self-Propelled Gas Lawn Mower
The 201cc engine and rear-wheel self-propelled drive make this BILT HARD a practical pick for larger lawns where pushing a mower across long stretches can wear you down. Its steel deck gives you mulching, rear bagging, and side discharge, so you can choose how to handle clippings as grass conditions change. Compared with the PowerSmart 22-Inch Self-Propelled Gas Lawn Mower, it has a slightly narrower cutting path but offers eight height settings and a wider stated adjustment range. The no-choke, no-primer starting design may simplify getting underway, though this is still a gas mower that needs fuel and routine maintenance. Choose it for drive assistance and flexible clipping options; skip it if you want cordless operation or a push mower with fewer powered features.
Pros:- Self-propelled rear-wheel drive reduces pushing effort across larger areas
- Three clipping options suit different grass conditions and cleanup preferences
- Eight cutting-height settings allow finer adjustment than the PowerSmart 22-Inch model’s six
- No-choke, no-primer starting design simplifies the starting process
Cons:- Gas engine requires fuel and routine maintenance
- Single-speed drive offers less pace control than variable-speed self-propelled designs
- 21-inch path is narrower than the PowerSmart 22-Inch model’s deck
Best for: Owners of larger lawns who want rear-wheel drive assistance and the option to mulch, bag, or discharge clippings
Not ideal for: Buyers who prefer a light cordless mower or want to avoid gas engine fueling and maintenance
- Cutting width:21 inches
- Engine:201cc 4-cycle OHV
- Torque:9.0 ft·lb
- Deck:Steel, 3-in-1
- Drive:Single-speed self-propelled rear-wheel drive
- Discharge options:Rear bagging, mulching, side discharge
- Cutting height:1.2–3.75 inches
- Height settings:8 positions
- Starting design:No choke, no primer
Our verdict“Choose this BILT HARD if you want self-propelled gas mowing and flexible clipping management for a larger yard.”
Worx WG745 40V Cordless 17-Inch Lawn Mower
The Worx WG745 suits homeowners who want a cordless mower with mulching capability and storage that takes little room. Its 17-inch deck and 40-pound assembled weight make it easier to maneuver and stow than the gas-powered BILT HARD 21-Inch Self-Propelled Gas Lawn Mower, though the narrower cut calls for more passes over a broad lawn. Worx states coverage of up to 1/4 acre per charge; that makes it a better fit for a modest, maintained yard than for extended mowing or overgrown grass. IntelliCut adjusts speed automatically, while the collapsible handles help when garage space is limited. You can mulch or collect clippings in the rear bag, but there is no side-discharge option listed. Pick it for compact cordless convenience; look elsewhere if your lawn exceeds its stated coverage.
Pros:- Up to 1/4 acre of stated coverage per charge suits many modest yards
- Mulching and rear-bag collection provide two ways to manage clippings
- 40-pound assembled weight and collapsible handles ease maneuvering and storage
- IntelliCut adjusts motor speed automatically
Cons:- 17-inch deck takes more passes than the 21-inch BILT HARD gas mower
- Stated coverage limits its suitability for larger lawns
- No side-discharge option is listed
Best for: Owners of modest yards up to 1/4 acre who want cordless mulching and compact storage
Not ideal for: People with larger lawns or tall, thick grass who need a wider deck and longer mowing capacity
- Model:WG745
- Voltage:40V
- Deck width:17 inches
- Batteries:Two 20V 4.0Ah batteries
- Stated coverage:Up to 1/4 acre per charge
- Motor:Brushless Motor 2.0
- Functions:Mulching and rear-bag collection
- Weight:40 lbs fully assembled
- Cutting heights:6
Our verdict“Choose the WG745 for cordless mulching on a modest lawn where maneuverability and storage matter more than deck width.”
PowerSmart 22-Inch Self-Propelled Gas Lawn Mower, 170cc
For buyers who want to cover ground quickly, the 22-inch steel deck is the PowerSmart’s clearest advantage: it cuts a wider strip than the BILT HARD 21-Inch Self-Propelled Gas Lawn Mower on each pass. Rear-wheel drive helps with pushing effort, while mulching, rear bagging, and rear discharge give you options for dealing with clippings. Its 170cc four-stroke engine is smaller than the BILT HARD’s 201cc engine, and its six height positions offer fewer adjustments than that mower’s eight. The 1.5–3.9-inch range reaches higher than the BILT HARD’s stated maximum, which can suit buyers who prefer a taller cut. This remains a gas mower, with fuel and engine upkeep to manage. Consider it for broad lawns where fewer passes matter; a cordless model may better suit a small yard and low-maintenance preference.
Pros:- 22-inch deck covers a wider strip per pass than the BILT HARD 21-inch model
- Self-propelled rear-wheel drive helps reduce pushing effort
- Mulching, rear bagging, and rear discharge give three clipping choices
- Cutting height reaches 3.9 inches
Cons:- Gas engine needs fuel and routine maintenance
- Six height settings provide fewer adjustment points than the BILT HARD 21-inch model
- Recoil start requires a pull-start
Best for: Owners of broad lawns who value a wide cutting path, rear-wheel drive, and several clipping options
Not ideal for: Buyers seeking cordless operation, minimal upkeep, or the finer height adjustment offered by eight-position models
- Model:DB8622S
- Engine:170cc 4-stroke OHV
- Drive:Self-propelled rear-wheel drive
- Cutting width:22 inches
- Cutting height:1.5–3.9 inches
- Height settings:6
- Deck material:Steel
- Functions:Mulching, rear bagging, rear discharge
- Start:Auto choke and recoil start
Our verdict“Choose the PowerSmart if wide-pass coverage and self-propelled gas operation suit your lawn better than cordless simplicity.”
KOMASTY 40V 16-Inch Cordless Electric Lawn Mower
The KOMASTY offers 40V cordless mulching and bagging with two included batteries and chargers, but its stated runtime of up to 10 minutes sharply limits the size of lawn it suits. That makes it a more constrained choice than the Worx WG745, which lists coverage of up to 1/4 acre per charge and has a 17-inch deck. The KOMASTY’s 16-inch cutting width means more passes, and its listed height range tops out at 2.95 inches, so it offers less scope for a taller cut than the Worx. Its brushless motor and steel blade are useful hardware, while the 10.6-gallon bag provides collection when mulching does not suit conditions. Choose it for brief sessions on a small, regularly maintained lawn; skip it if you need extended runtime or often cut thick, high grass.
Pros:- Supports mulching and collection in the included 10.6-gallon bag
- Includes two 4.0Ah batteries and two chargers
- Brushless motor runs at up to 3400 RPM
- Five cutting-height positions offer adjustment for routine lawn care
Cons:- Up to 10 minutes of runtime sharply restricts mowing area
- 16-inch deck takes more passes than the Worx WG745’s 17-inch deck
- May stop when cutting grass that is too high or thick
Best for: Owners of very small, regularly maintained lawns who mow in short sessions and want both mulching and bagging
Not ideal for: Anyone with a larger lawn, long mowing sessions, or thick and overgrown grass
- Power:40V
- Motor:Brushless, up to 3400 RPM
- Cutting width:16 inches
- Functions:Mulching and bagging
- Grass bag capacity:10.6 gallons
- Batteries:Two 4.0Ah batteries
- Chargers:Two
- Runtime:Up to 10 minutes
- Cutting height:1.37–2.95 inches, 5 positions
Our verdict“Choose the KOMASTY only for a small lawn that can be mowed within its short stated runtime.”
BILT HARD 21-Inch Gas Push Lawn Mower with 144cc Engine
This BILT HARD keeps the core mulching setup straightforward: a 21-inch steel deck with a plug for mulching, plus rear bagging and side discharge when you want to collect clippings or clear them away. Unlike the self-propelled BILT HARD 21-Inch Self-Propelled Gas Lawn Mower, it relies on your own effort to move the mower, but its 144cc engine and push design make it a simpler fit for flatter, manageable lawns. The six height positions span 1 to 3 inches, a narrower range than the self-propelled model, so buyers wanting a higher cut have less flexibility. The included bag, chute, plug, oil, and tools provide the main grass-handling parts and setup supplies. Expect gasoline use and routine engine maintenance; choose a cordless mower if avoiding that upkeep matters more than a wide deck.
Pros:- Three clipping options include mulching, rear bagging, and side discharge
- 21-inch steel deck provides a broad cutting path
- Includes grass bag, discharge chute, mulching plug, engine oil, and tools
- Four-stroke engine runs on gasoline without mixing oil into the fuel
Cons:- Push design requires the operator to supply all movement
- Gas engine requires fuel and routine maintenance
- 1–3-inch cutting range is narrower than the self-propelled BILT HARD model’s range
Best for: Owners of flatter, manageable lawns who want a 21-inch gas push mower with mulching, bagging, and side discharge
Not ideal for: People with steep or expansive lawns who would benefit from self-propelled drive or buyers seeking a taller cutting range
- Engine:144cc, 4-cycle gas
- Engine power:3.4 HP
- Torque:5.75 ft-lb
- Cutting deck:21-inch steel
- Cutting height:1.0–3.0 inches, 6 positions
- Grass management:Bagging, mulching, side discharge
- Fuel tank capacity:27.1 fl oz
- Wheel size:10-inch front and rear
- Included accessories:Grass bag, side discharge chute, mulching plug, engine oil, tools
Our verdict“Choose this push mower for a manageable lawn if you want three clipping options and are comfortable supplying the push effort.”
PowerSmart 21-Inch Self-Propelled Gas Lawn Mower with 170cc Engine
Rear-wheel drive gives this PowerSmart an edge for buyers mowing slopes or uneven ground, where pushing a mower can become tiring. Its 21-inch steel deck and 170cc engine suit medium to large lawns, while the three mowing modes let you mulch when conditions suit or switch to bagging or rear discharge. Compared with the cordless Greenworks 60V 17-Inch Push Lawn Mower, this model has a wider deck and no battery runtime limit, but it requires fuel and regular engine maintenance. The 1.4-bushel bag is modest for a mower aimed at bigger yards, so frequent emptying may come with bagging. Its six height settings offer useful adjustment, though the maximum 3.9-inch cut is lower than some taller-cutting alternatives.
Pros:- Rear-wheel drive and 10-inch rear wheels help maintain traction on slopes and uneven ground
- Mulching, bagging, and rear discharge provide flexibility as grass conditions change
- 21-inch steel deck covers more ground per pass than narrower cordless options
- Six cutting heights range from 1.5 to 3.9 inches
Cons:- Gas engine needs fuel and routine maintenance
- The 1.4-bushel grass bag may need frequent emptying on larger lawns
- Heavier gas mower design can be less convenient to store and maneuver than a compact push mower
Best for: Homeowners with medium to large sloped or uneven lawns who want self-propelled traction and the option to mulch, bag, or discharge
Not ideal for: Buyers seeking low-maintenance cordless mowing or a large bag for collecting clippings across a big lawn
- Engine:170cc OHV
- Cutting width:21 inches
- Deck material:Steel
- Mowing modes:Bagging, mulching, rear discharge
- Grass bag capacity:1.4 bushels
- Cutting height:6 settings, 1.5–3.9 inches
- Drive:Self-propelled, rear-wheel drive
- Rear wheel size:10 inches
Our verdict“Choose this PowerSmart if you need self-propelled help on uneven ground and want mulching alongside bagging and discharge.”
Greenworks 60V 17-Inch Push Lawn Mower with 4.0Ah Battery and Charger
The 17-inch deck makes this Greenworks easier to fit through tighter spaces than the 21-inch gas mowers in this roundup, and its included battery and charger make it ready for cordless mowing. For mulching, the brushless motor and six height positions give it a practical setup for routine lawn care; rear bagging is available when clippings need collecting. Compared with the LawnMaster CLMF4819X, this mower has a narrower deck and a stated 60V battery platform, while the LawnMaster cuts 19 inches and also offers side discharge. Greenworks claims up to 40 minutes per charge, but actual runtime depends on conditions, and the 90-minute recharge can interrupt work on lawns that outlast a charge. Its 3.15-inch maximum cutting height is also more limited than some gas alternatives.
Pros:- Battery and charger are included for cordless operation
- Brushless motor supports efficient battery-powered mowing
- Mulching and rear bagging cover two common clipping preferences
- 17-inch deck is easier to maneuver through tight spaces than wider 21-inch models
Cons:- Up to 40 minutes of runtime may not cover a larger lawn on one charge
- The 17-inch deck requires more passes than 19- or 21-inch options
- 90-minute recharge time can extend mowing across multiple sessions
Best for: Owners of small to medium lawns with narrow gates or garden paths who want cordless mulching and rear-bagging
Not ideal for: People mowing larger lawns in one session or buyers who need side discharge or a taller maximum cut
- Voltage:60V
- Deck width:17 inches
- Battery capacity:4.0Ah
- Runtime:Up to 40 minutes
- Recharge time:90 minutes
- Motor:Brushless
- Cutting height:6 positions, 1.5–3.15 inches
- Cutting options:Mulching and rear bagging
- Warranty:4-year limited tool and battery warranty
Our verdict“Pick this Greenworks for compact, cordless mulching on a smaller lawn where maneuverability matters more than wide coverage.”
LawnMaster CLMF4819X 48V MAX 19-Inch Brushless Cordless Lawn Mower
If you want cordless mulching but do not need a grass bag, the LawnMaster CLMF4819X pairs a 19-inch deck with side discharge and mulching. That makes it a wider-cutting alternative to the Greenworks 60V 17-Inch Push Lawn Mower, while giving up Greenworks’ rear-bagging option. Two 24V batteries provide up to 40 minutes of stated runtime, and automatic power management can adjust power delivery to the mowing load. Six height positions, including a 1.4-inch minimum, allow a lower cut than the Greenworks’ 1.5-inch minimum. The tradeoff is a limited set of clipping options: buyers who want to collect clippings will need another mower. Its runtime may also be restrictive for larger lawns, particularly when grass is demanding to cut.
Pros:- 19-inch deck covers more ground per pass than the 17-inch Greenworks push mower
- Mulching and side discharge handle two ways of managing clippings
- Brushless motor and automatic power management adapt power delivery to mowing demand
- Six cutting positions span 1.4 to 3.4 inches
Cons:- No bagging option for collecting clippings
- Up to 40 minutes of runtime may be insufficient for larger lawns
- Uses two 24V batteries rather than a single 48V battery pack
Best for: Cordless-mower owners with small to medium lawns who mulch routinely and want side discharge as an alternative
Not ideal for: Buyers who need a grass bag, regularly mow large areas, or want a single battery platform rather than two 24V packs
- Model:CLMF4819X
- Cutting width:19 inches
- Motor:Brushless
- Battery:2 × 24V MAX 4.0Ah lithium-ion
- Runtime:Up to 40 minutes
- Cutting height:6 positions, 1.4–3.4 inches
- Functions:Side discharge and mulching
- Speed:3,600 RPM
- Included accessory:Dual charger
Our verdict“Choose the LawnMaster if you want a wider cordless mulcher with side discharge and can manage without bagging.”
How We Picked
I compared the 13 listed mowers on the details that shape a mulching purchase: deck width, power source, drive type, stated cutting modes, battery configuration, and likely fit for different lawn sizes. I gave more weight to a useful combination of cutting capacity and manageable operation than to a single headline specification. A self-propelled mower can reduce pushing effort, while a compact push model can be easier to store and maneuver in a small yard.
The order reflects how well each mower’s stated setup serves a distinct buyer need, with the Greenworks 60V 21-inch self-propelled model first for its combination of a wide deck, powered drive, and two batteries. Gas models rank well for buyers seeking wide cuts and refueling flexibility; cordless models rise when lower routine engine maintenance or compact handling matters. Product information supplied for this roundup does not state every mower’s mulching hardware or runtime, so I treat those as details to confirm before purchase rather than assume.
Factors to Consider When Choosing Mulching Lawn Mower
Choosing a mower for mulching means matching the machine to the lawn and to how you cut it. These broader checks can help avoid a common mismatch: buying for a maximum specification while overlooking storage, grass conditions, or the way you actually maintain the yard.
Match Deck Width to Lawn Shape
A wider deck can reduce the number of passes across open lawn, but it also takes more room to turn around beds, trees, and narrow gates. Measure the tightest access point and storage doorway, not just the main mowing area. For a small or heavily landscaped yard, a 16- or 17-inch deck may save awkward maneuvering even if each mow takes more passes. Open lawns can make 21- or 22-inch decks more appealing. A common mistake is choosing the widest deck that fits the shed while ignoring whether it can pass through the gate. Think about how much of the lawn is open before deciding which width is truly faster for you.
Choose Power Around Your Mowing Routine
Battery mowers avoid gasoline storage and engine servicing, while gas mowers can be refueled and returned to work without waiting for a battery charge. Battery convenience depends on whether the supplied battery capacity can cover your whole lawn under your actual conditions; dense or tall grass can demand more from a mower than a light, dry cut. For a cordless model, check the battery platform and whether you already own compatible batteries. For gas, include the recurring tasks of fuel handling, oil checks, and seasonal care in your decision. Neither power source guarantees better mulching by itself. Regular cutting height and grass condition also affect how finely clippings are processed.
Decide Whether Self-Propelled Drive Solves a Real Problem
Self-propelled drive can help on slopes, long runs, or larger lawns where pushing becomes tiring. It adds mechanical complexity and may add weight, so the benefit is smaller on a compact, flat plot. Consider how often you turn and reverse: drive assistance helps most during forward mowing, while tight spaces still call for careful handling. A buyer who chooses self-propelled solely because it sounds like an upgrade may end up with a heavier machine than needed. If you have uneven ground, assess both traction and turning control. For level lawns, a push mower can be a straightforward fit.
Check Mulching Setup and Grass Conditions
Confirm that the mower includes the mulching plug or configuration you need; a listing that mentions multiple cutting modes may not mean every accessory is fitted for use out of the box. Mulching works best when you remove modest amounts of grass at a time. If the lawn often grows long between cuts, a discharge option can help manage clippings that would otherwise clump under the deck. Wet grass is also more likely to form clumps, so cutting schedule and weather matter alongside mower design. Set a realistic routine before paying extra for versatility. Look for clear instructions on changing modes and clearing the deck safely.
Plan for Storage, Noise, and Upkeep
The mower’s footprint includes more than deck width: handle folding, battery charging space, fuel storage, and access for cleaning all affect day-to-day use. Cordless models avoid engine service but still need battery care and a suitable place to charge. Gas models bring familiar refueling convenience, with more routine upkeep and louder operation to account for. Check the mower’s assembled dimensions and storage instructions rather than assuming the handle folds compactly. Also consider where clippings and debris will be cleared after a wet or heavy cut. The easiest mower to maintain is often the one you can reach and clean without rearranging the whole shed.
Frequently Asked Questions
Can I mulch with any mower in this list?
Do not assume that every mower arrives ready to mulch just because it appears in a mulching roundup. Check the exact model listing and manual for a mulching plug, blade, or stated mulching mode, especially where the supplied details do not spell out the cutting configuration. Some listed PowerSmart models explicitly mention mulching alongside discharge modes, while other product descriptions focus on power and deck size. Confirm which accessories are included and whether any must be purchased separately. That check matters more than the mower’s power source.
Should I choose a 21-inch gas mower or a smaller cordless mower?
Start with lawn layout and access rather than comparing deck size alone. A 21-inch mower can cover open ground in fewer passes, while a smaller cordless model can be easier to steer around obstacles and store in a tight space. Gas avoids charging waits, but brings fuel and engine care; cordless operation avoids that routine and depends on battery capacity. If your lawn is large and open, the wider deck may save effort over the season. If it is compact, narrow, or densely landscaped, easy maneuvering may matter more than fewer passes.
Is self-propelled drive worth choosing for a small lawn?
It can be, but only if pushing is a meaningful burden on your terrain or for the person mowing. Slopes and long stretches make drive assistance more useful than a small, flat lawn with frequent tight turns. A self-propelled model may add weight and complexity, which can be inconvenient when lifting it into storage or moving it around obstacles. Compare the route you mow with the kind of help the drive system provides. If the yard is level and short, a push mower may be the simpler match.
How many batteries do I need for a full mow?
There is no reliable answer without the lawn area, grass height, terrain, and cutting conditions. Two batteries, as supplied with the Greenworks 60V 21-inch model, provide a different starting setup from a mower listed with one battery, but included capacity alone does not promise a particular runtime. Check the manufacturer’s runtime guidance and whether the mower accepts spare batteries from a platform you already own. If the lawn is near the mower’s stated capacity, plan for charging time or a spare. Cutting regularly and avoiding very tall, wet grass can also reduce strain on a cordless mower.
When should I use side discharge instead of mulching?
Side discharge can be useful when grass has grown too long for a clean mulch or when conditions make fine clipping distribution difficult. Mulching returns small clippings to the lawn, but heavy clippings can mat or leave visible clumps if the deck is overloaded. If your mowing schedule is irregular, a mower with multiple cutting modes gives you a fallback for those occasions. Confirm that the selected model includes the discharge hardware you want. For routine cuts with manageable grass, mulching can remain the preferred mode.
Conclusion
For most buyers seeking a balance of cutting width, powered drive, and included battery capacity, I’d start with the Greenworks 60V 21-Inch Self-Propelled Mower as best overall. The Greenworks 40V 16-Inch Push Mower is my value fit for a smaller lawn where compact storage and simple handling count more than fast coverage. Beginners with a modest, level yard may prefer that same compact push format, after confirming the mulching setup. For a premium gas-oriented choice, compare the PowerSmart 22-Inch Self-Propelled and PowerSmart 21-Inch Self-Propelled 170cc around deck width and stated configuration. Choose the Worx WG745 17-Inch or Greenworks 60V 17-Inch when maneuverability matters most; for slopes or long mowing runs, prioritize a self-propelled option over a compact deck. Match the pick to the lawn you have and verify included mulching parts before ordering.
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