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Finding the best lawn mowers with mulching requires looking at hard specs. We compared 15 models ranked by their published data. The SENIX 22-Inch 170cc Self-Propelled Gas Mower leads with a 22-inch cutting deck and 170cc engine. This combination offers strong power and wide coverage for medium yards. Our picks focus on cutting width, drive type, and mulching functions. Use this guide to decide which mower fits your yard size and terrain.
Match the deck width to your yard size
Your yard size determines the right cutting width. Medium lawns benefit from the 22-inch deck on the SENIX 170cc model. Small, flat yards suit the 16-inch Worx 40V mower. Steep slopes require the heavy-duty Tyzar flail mower. Choose a width that covers your space without leaving uncut strips.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | SENIX 22-Inch 170cc Self-Propelled Gas Mower Best overall | Medium yards needing mulching and bagging | |
| 2 | Worx 21-Inch 40V Cordless Push Lawn Mower Best 1/2 acre | half-acre flat lawns needing mulching | |
| 3 | SENIX 21-Inch 170cc Self-Propelled Gas Mower Also great | Small to medium flat yards up to 1/3 acre | |
| 4 | BILT HARD 21-Inch 201cc Self-Propelled Gas Mower Also great | Mulching with a durable steel deck | |
| 5 | Greenworks 60V 17-Inch Push Lawn Mower Best 17-inch | small lawns and tight spaces | |
| 6 | SENIX 21-Inch Self-Propelled Gas Mower Best budget | Small to medium lawns up to 1/3 acre | |
| 7 | Tyzar 459cc Hybrid Flail Mower Best premium | Steep slopes and dense overgrowth mulching | |
| 8 | NovorikX 21-Inch 60V Self-Propelled Mower Also great | Medium to large lawns needing extended runtime | |
| 9 | PowerSmart 22-Inch Self-Propelled Gas Lawn Mower Also great | Small to medium lawns needing traction | |
| 10 | PowerSmart 21-Inch 140cc Gas Push Mower Best 4-stroke | small flat lawns needing mulch | |
| 11 | RYOBI 18V 33cm Mulching Lawnmower Also great | small yards with existing 18V battery systems | |
| 12 | RYOBI 18V 37cm Brushless Mower Also great | small lawns under 350 m² with mulching focus | |
| 13 | RYOBI 18V Hybrid Lawnmower 37 cm Best 2.5ah | Small yards with existing 18 V ONE+ batteries | |
| 14 | Worx 16-Inch 40V Cordless Mower Best 16-inch | small lawns up to 1/4 acre | |
| 15 | PowerSmart 21-Inch 140cc Self-Propelled Mower Also great | Mulching and bagging on slopes |
The best fit for you
- You need the best overall mulching mower – SENIX 22-Inch 170cc Self-Propelled Gas Mower – The 22-inch cutting deck and 170cc gas engine provide strong mulching performance for medium yards.
- You have a half-acre flat lawn – Worx 21-Inch 40V Cordless Push Lawn Mower – This 40V cordless model is rated for half-acre applications and includes a 5.0 Ah battery.
- You need to mulch steep slopes – Tyzar 459cc Hybrid Flail Mower – The remote control drive and 459cc hybrid engine handle steep terrain and dense overgrowth safely.
- You want a lightweight option for small spaces – Greenworks 60V 17-Inch Push Lawn Mower – The 17-inch push deck and 37.5-pound weight make it ideal for tight spaces.
Is Mulching Worth It for Your Lawn?
Mulching cuts grass clippings into fine particles that decompose quickly. This returns nutrients to the soil and reduces waste. Most models in this list offer 3-in-1 or 2-in-1 functions, allowing you to switch between mulching, bagging, and side discharge. The SENIX 22-Inch model balances mulching with bagging for medium yards. Smaller options like the Worx 16-Inch prioritize maneuverability for tight spaces. Choose a mower with dedicated mulching capability if you want to minimize cleanup and fertilize naturally.
Worth it if
- You want to return nutrients to the soil naturally
- You prefer reducing grass clippings and waste
- You have a small to medium flat lawn
Skip it if
- You need to remove all clippings for a clean look
- You mow steep slopes requiring immediate debris removal
- You have dense overgrowth needing side discharge
SENIX 22-Inch 170cc Self-Propelled Gas Mower
Best for: Medium yards needing mulching and bagging
- Mowing Functions
- Mulching, Bagging, Side Discharge
- Cutting Width
- 22-inch
- Drive Type
- Self-propelled
- Motor Type
- 170 cc 4-cycle OHV
- Height Adjustments
- 6-position (1.25" to 4")
- Power Type
- Gas
This SENIX gas mower offers a 22-inch cutting width and a 170 cc 4-cycle OHV engine. It features self-propelled rear-wheel drive and a 3-in-1 system for mulching, bagging, or side discharge. The 6-position height adjustment ranges from 1.25 to 4 inches. You will appreciate the 19-gallon bagger and foldable handle for storage. It suits small to medium yards needing reliable mulching performance.
- 22-inch steel cutting deck for efficient coverage
- 170 cc 4-cycle OHV engine with rear-wheel drive
- Includes 19-gallon bagger and mulch plug for mulching
- 6-position single-lever height adjustment from 1.25 to 4 inches
- 170 cc engine displacement is lower than the 201 cc and 459 cc options available
- 72.8 pounds weight is heavier than many push mower competitors
- Single-speed drive limits speed control compared to variable-speed models
- You need a self-propelled mower with a 22-inch deck for mulching
- You want a 3-in-1 system that includes a bagger
- You prefer a single-lever height adjustment system
- You require a battery-powered or electric mower
- You need a high-displacement engine above 200 cc
- You prefer a lightweight push mower under 60 pounds
Verdict: SENIX 22-Inch Self-Propelled Gas Mower provides a solid balance of power and mulching capability for medium-sized lawns. It fits buyers who prioritize a wide cutting deck and included bagging over maximum engine displacement.
Worx 21-Inch 40V Cordless Push Lawn Mower
Best for: half-acre flat lawns needing mulching
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21"
- Drive Type
- Push
- Voltage
- 40V
- Battery Capacity
- 5.0Ah
- Motor Type
- Brushless
This push mower targets lawns up to half an acre. It uses a 40V system with two 5.0Ah batteries and a brushless motor. The 21-inch cutting width handles standard yard sizes. You get three mowing modes: mulching, bagging, and side discharge. IntelliCut sensors adjust speed for thick grass. The single-lever height adjustment offers seven settings from 1.5 to 4 inches.
- Brushless motor delivers 40% more power than first-gen models.
- IntelliCut sensors automatically adjust cutting speed for efficiency.
- Aerodeck technology prevents clogs and clumping in the deck.
- Two 5.0Ah batteries provide extended runtime for larger yards.
- Seven-position height adjustment with a single lever.
- Push drive type requires more physical effort than self-propelled models.
- 21-inch cutting width is narrower than many 22-inch competitors.
- 55.6-pound weight is heavier than many cordless alternatives.
- You have a flat lawn under half an acre.
- You want mulching and bagging options in one tool.
- You already own Worx 20V PowerShare batteries.
- You need self-propelled drive for hilly terrain.
- You require a cutting width wider than 21 inches.
- You prefer a lighter unit for easy storage.
Verdict: Worx 40V 21" Cordless Mower suits homeowners with small, flat yards who value mulching performance and smart speed adjustments. It is a solid choice for those already invested in the Worx battery ecosystem.
SENIX 21-Inch 170cc Self-Propelled Gas Mower
Best for: Small to medium flat yards up to 1/3 acre
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, FWD
- Motor Type
- 170 cc 4-cycle OHV gas
- Height Adjustments
- 6 positions, 1.25-3.75 in
- Engine Displacement
- 170cc
This SENIX mower uses a 170cc gas engine to handle up to 1/3-acre yards. It features a 21-inch steel deck and self-propelled front-wheel drive. You get three mowing functions: mulching, bagging, and side discharge. The height adjusts in six positions from 1.25 to 3.75 inches. It weighs 61.7 pounds and includes an 8-inch front wheel and 11-inch rear wheel for stability.
- 170cc 4-cycle OHV gas engine
- 21-inch cutting width
- Self-propelled front-wheel drive
- 6-position height adjustment
- 3-in-1 mulching, bagging, and side discharge
- 170cc engine displacement is lower than the 201cc and 459cc options on this list
- 1.7-bushel bag capacity is smaller than many competing bags
- 61.7-pound weight is heavier than the 18V cordless models
- You need a gas mower for up to 1/3-acre yards
- You prefer self-propelled front-wheel drive for flat terrain
- You want mulching, bagging, and side discharge options
- You have a yard larger than 1/3 acre
- You prefer a lighter cordless mower
- You need rear-wheel drive for steep hills
Verdict: SENIX 21" Self-Propelled Gas Mower suits homeowners with small to medium flat yards who want a reliable gas engine. It offers solid mulching performance for those who value versatility in grass management.
BILT HARD 21-Inch 201cc Self-Propelled Gas Mower
Best for: Mulching with a durable steel deck
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21"
- Drive Type
- Self-Propelled
- Motor Type
- 201cc 4-cycle OHV
- Height Adjustments
- 8-position (1.2" to 3.75")
- Power Type
- Gas
This BILT HARD mower features a 201cc 4-cycle OHV engine delivering 9.0 ft·lb of torque. You get a 21-inch steel deck with three mowing functions: mulching, bagging, and side discharge. The self-propelled drive moves at a fixed walking speed. You can adjust the cutting height across eight positions, ranging from 1.2 inches to 3.75 inches. It weighs 89.2 pounds.
- 201cc 4-cycle OHV engine provides 9.0 ft·lb of torque.
- 21-inch steel cutting deck handles wide swaths.
- Three mowing modes: mulching, bagging, and side discharge.
- Eight-position height adjustment lever synchronizes all four wheels.
- Fixed walking speed offers less flexibility than variable-speed drives.
- 89.2-pound weight is heavier than many competitors.
- You need a self-propelled mower with mulching capability.
- You want a single lever to adjust cutting height.
- You prefer a steel deck for durability.
- You require variable speed control for hills.
- You prefer a lighter unit under 80 pounds.
- You need a battery-powered electric mower.
Verdict: BILT HARD 21" Self-Propelled Gas Mower suits homeowners who want a durable steel deck and mulching capability without the complexity of variable speed controls.
Greenworks 60V 17-Inch Push Lawn Mower
Best for: small lawns and tight spaces
- Mowing Functions
- Mulching, 2-in-1, Bagging
- Cutting Width
- 17"
- Drive Type
- Push
- Voltage
- 60V
- Battery Capacity
- 4.0Ah
- Run Time
- Up to 40 minutes
This Greenworks 60V push mower features a 17-inch cutting deck and a brushless motor. It includes a 4.0Ah battery providing up to 40 minutes of runtime. The 2-in-1 design supports mulching and bagging. You get six height adjustments from 1.5 to 3.15 inches. The lightweight 37.5-pound build aids maneuverability. It suits small lawns where tight spaces require a narrow deck.
- 60V brushless motor for consistent power
- 17-inch cutting width for tight spaces
- Up to 40 minutes runtime on 4.0Ah battery
- Lightweight 37.5-pound construction
- 17-inch cutting width is narrower than most competitors
- Push drive type requires manual effort
- 37.5-pound weight is lighter but offers less stability
- You have a small lawn under a quarter acre
- You need to navigate tight spaces and obstacles
- You prefer a lightweight mower for easy handling
- You want self-propelled ease for large areas
- You need a wider 21-inch or larger deck
- You require extended runtime beyond 40 minutes
Verdict: Greenworks 60V 17-Inch Push Mower fits buyers with small lawns who need a narrow deck. It works well for tight spaces but lacks the power and width for larger yards.
SENIX 21-Inch Self-Propelled Gas Mower
Best for: Small to medium lawns up to 1/3 acre
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21 in
- Drive Type
- Self-propelled, front-wheel drive
- Motor Type
- 170cc 4-cycle OHV
- Height Adjustments
- 6 positions, 1.25 to 3.75 inches
- Power Type
- Gas
This SENIX mower features a 21-inch cutting width and a 170cc 4-cycle engine delivering 3.8 HP. It is self-propelled with front-wheel drive, making it suitable for 1/3 acre yards. The 3-in-1 deck supports mulching, side discharge, and bagging. You get six height positions from 1.25 to 3.75 inches. The 61.7-pound build offers stability on uneven terrain.
- 21-inch cutting width for efficient coverage
- 170cc 4-cycle engine with 3.8 HP output
- Self-propelled front-wheel drive system
- Six height adjustment positions from 1.25 to 3.75 inches
- 3-in-1 mulching, side discharge, and bagging capabilities
- 170cc engine displacement is lower than the 201cc and 459cc engines on this list
- 21-inch cutting width is narrower than the 22-inch models available
- 61.7-pound weight is heavier than many push mower alternatives
- You need a self-propelled mower for lawns up to 1/3 acre
- You want mulching, bagging, and side discharge options in one unit
- You prefer a steel deck for durability on rough terrain
- You require a wider 22-inch or larger cutting deck
- You are looking for a lighter push mower under 50 pounds
- You need more than 200cc of engine power for heavy-duty work
Verdict: SENIX 21-Inch Self-Propelled Gas Mower is a solid mid-range option for homeowners with small to medium yards who value mulching versatility. It fits those who want self-propelled ease without the bulk of commercial-grade equipment.
Tyzar 459cc Hybrid Flail Mower
Best for: Steep slopes and dense overgrowth mulching
- Mowing Functions
- Mulching
- Motor Type
- 459cc hybrid
- Drive Type
- Remote Control
- Application
- Slopes
- Dimensions
- 51.2 × 31.5 × 47.2 inches
- Weight
- 826 pounds
This Tyzar model is a hybrid commercial crawler designed for steep slopes up to 55 degrees. It features a 459cc gas engine paired with electric tracks for mulching dense grass and light saplings. You control it remotely from 2000 feet away. The unit weighs 826 pounds and measures 31.5 inches wide. It suits users managing rough terrain who need high power and safety from a distance.
- 459cc commercial engine for high-power mulching
- Remote control operation from 2000 feet
- Hybrid drive with electric tracks for steep slopes
- Zero-turn capability on uneven ground
- 826-pound weight limits portability
- 31.5-inch cutting width is wider than most push mowers
- Requires remote control setup rather than direct push
- You need to mow steep slopes up to 55 degrees
- You manage dense overgrowth or light saplings
- You want to operate from a safe distance
- You prefer a lightweight push mower
- You have a small, flat residential lawn
- You need a compact storage footprint
Verdict: Tyzar 459cc Hybrid Flail Mower fits landowners with steep, difficult terrain who prioritize safety and mulching power over maneuverability in tight spaces.
NovorikX 21-Inch 60V Self-Propelled Mower
Best for: Medium to large lawns needing extended runtime
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21 in
- Drive Type
- Self-propelled
- Voltage
- 60 V
- Battery Capacity
- 2 x 5.0 Ah
- Motor Type
- 1200W brushless
This NovorikX mower uses a 60V platform with a 1200W brushless motor for strong cutting performance. It includes two 5.0 Ah batteries, allowing you to tackle lawns up to 1 acre on a single charge. The 21-inch steel deck and variable self-propelled drive from 0.9 to 3.6 MPH help you manage medium to large yards efficiently. It offers mulching, bagging, and side discharge modes.
- Includes two 5.0 Ah batteries for extended runtime
- 1200W brushless motor handles thick grass
- Variable speed drive from 0.9 to 3.6 MPH
- 21-inch steel cutting deck covers more ground
- Heavier at 86 pounds compared to many competitors
- Lower battery capacity per unit than 60V 4.0 Ah or 5.0 Ah alternatives in the list
- Narrower 21-inch cutting width compared to 22-inch models on the list
- You need backup power for larger lawns
- You want a self-propelled mower for slopes
- You prefer brushless motor efficiency
- You have a small yard under 1/4 acre
- You prefer lighter equipment for storage
- You want a wider 22-inch cutting deck
Verdict: NovorikX 60V 21-Inch Self-Propelled Mower fits users who need dual batteries for larger properties and value the control of a variable speed drive. It is a solid choice for medium to large yards where runtime and slope handling matter.
PowerSmart 22-Inch Self-Propelled Gas Lawn Mower
Best for: Small to medium lawns needing traction
- Mowing Functions
- 3-in-1, Mulching
- Cutting Width
- 22"
- Drive Type
- Self-propelled, rear-wheel drive
- Motor Type
- 150cc Briggs and Stratton EX625
- Height Adjustments
- 6-position (1.5" – 3.9")
- Power Type
- Gas
This PowerSmart mower features a 22-inch cutting deck and a 150cc Briggs & Stratton EX625 engine. It offers self-propelled rear-wheel drive for traction on slopes. The 3-in-1 system includes mulching, rear discharge, and bagging with a 1.4-bushel bag. You get six cutting heights from 1.5 to 3.9 inches. It is a solid option for small to medium lawns needing reliable mulching performance.
- 22-inch cutting width for efficient coverage
- 150cc Briggs & Stratton EX625 engine with ReadyStart
- Self-propelled rear-wheel drive for better traction
- 1.4-bushel grass bag for easy clippings disposal
- 6-position height adjustment from 1.5 to 3.9 inches
- 150cc engine is smaller than the 170cc and 201cc engines in other picks
- 72-pound weight makes it heavier than many competitors
- 1.4-bushel bag capacity is smaller than larger models on the list
- You need a self-propelled mower for uneven terrain
- You want a reliable gas engine with easy starting
- You prefer a wider 22-inch cutting deck
- You require a more powerful engine than 150cc
- You want a lighter mower for easy storage
- You need a larger grass bag capacity
Verdict: PowerSmart 22" Gas Mower, 150cc suits homeowners with small to medium lawns who need self-propelled traction and a wider cutting deck. It delivers reliable mulching performance for those who prioritize engine durability and deck width.
PowerSmart 21-Inch 140cc Gas Push Mower
Best for: small flat lawns needing mulch
- Mowing Functions
- 3-in-1, Mulching, Side Discharge
- Cutting Width
- 21"
- Drive Type
- Push
- Motor Type
- 140cc Briggs&Stratton 4-stroke
- Height Adjustments
- 6 adjustments (1.5 to 3.9 inches)
- Power Type
- Gas
This PowerSmart push mower features a 140cc Briggs & Stratton 4-stroke engine and a 21-inch steel deck. It offers three mowing functions: mulching, bagging, and side discharge. You get six cutting height adjustments ranging from 1.5 to 3.9 inches. The unit measures 32.9 inches in length. It suits small yards where you prefer a manual push design over self-propelled models.
- 140cc Briggs & Stratton 4-stroke engine
- 21-inch wide cutting deck
- 6 cutting height adjustments
- 3-in-1 mulching, bagging, and discharge
- 140cc engine displacement is lower than many 170cc+ competitors
- Push drive requires more physical effort than self-propelled options
- You have a small lawn under half an acre
- You prefer a lighter, manual push mower
- You need a dedicated mulching setup with bagging
- You need self-propelled drive for slopes
- You require more than 140cc of engine power
- You want a wider cutting deck than 21 inches
Verdict: PowerSmart 21" Gas Push Mower fits homeowners with small, flat lawns who want reliable mulching without the weight of a self-propelled unit.
RYOBI 18V 33cm Mulching Lawnmower
Best for: small yards with existing 18V battery systems
- Mowing Functions
- Mulching
- Cutting Width
- 33 cm
- Voltage
- 18V
- Battery Capacity
- 4.0 Ah
- Height Adjustments
- 25-65mm
- Dimensions
- 15.4 × 28 × 15 inches
This RYOBI lawn mower offers 18V power with a 33 cm cutting width. It includes a 4.0 Ah battery for runtime. The deck height adjusts from 25 to 65 mm. It is designed for mulching. The unit weighs 19.2 pounds. This model suits small yards where quiet operation matters. You get a focused mulching tool without extra functions.
- 33 cm cutting width covers ground efficiently
- 18V battery system with 4.0 Ah capacity
- Lightweight at 19.2 pounds for easy handling
- 6-position height adjustment from 25 to 65 mm
- 18V voltage is lower than the 40V and 60V options on this list
- 33 cm cutting width is narrower than the 21 to 22 inch models here
- 19.2 pound weight is lighter than the self-propelled gas mowers, offering less momentum
- You have a small lawn under 1/4 acre
- You prefer electric tools for quieter operation
- You want a lightweight mower for easy storage
- You need self-propelled drive for hilly terrain
- You require a wider cutting deck for large areas
- You prefer gas engines for extended runtime
Verdict: RYOBI 18V 33cm Mulching Lawnmower fits small yards where quiet, lightweight operation is key. It works well for users who already own 18V ONE+ batteries.
RYOBI 18V 37cm Brushless Mower
Best for: small lawns under 350 m² with mulching focus
- Mowing Functions
- Mulching
- Cutting Width
- 37 cm
- Voltage
- 18V
- Battery Capacity
- 5.0 Ah
- Motor Type
- Brushless
- Height Adjustments
- 6 positions (20 to 70 mm)
This RYOBI mower features a 37 cm cutting width and a brushless motor for efficient mulching. It includes a 5.0 Ah battery and charger, providing up to 350 m² of runtime. You can adjust the height in six positions from 20 to 70 mm. The EasyEdge design cuts close to borders. It is a solid option for small to medium lawns where mulching is your primary goal.
- Brushless motor delivers high torque and efficiency
- 37 cm cutting width covers ground quickly
- Includes 5.0 Ah battery for up to 350 m²
- Six-position height adjustment from 20 to 70 mm
- EasyEdge feature cuts grass close to edges
- 18V voltage is lower than the 40V and 60V options on this list
- 2-in-1 function limits you to mulching or pickup, not side discharge
- 37 cm width is narrower than the 21-inch (53 cm) and 22-inch (56 cm) gas models
- You want to use existing 18V ONE+ batteries
- You need precise mulching for a small lawn up to 350 m²
- You prefer a lightweight push mower over self-propelled models
- You need to mulch large areas over 350 m² in one session
- You require a wider 53 cm or larger cutting deck for efficiency
- You need a self-propelled drive for hilly terrain
Verdict: RYOBI 18V Brushless 37cm Lawnmower fits homeowners with small gardens who already own 18V batteries and prioritize mulching over raw power or width. It is ideal for flat lawns under 350 m².
RYOBI 18V Hybrid Lawnmower 37 cm
Best for: Small yards with existing 18 V ONE+ batteries
- Mowing Functions
- Mulching
- Cutting Width
- 37 cm
- Voltage
- 18 V
- Battery Capacity
- 2.5 Ah
- Dimensions
- 289 × 169 × 154 inches
- Weight
- 32 pounds
This RYOBI hybrid mower offers 18 V power with a 37 cm cutting width. It supports mulching and uses a 2.5 Ah battery. The design includes an EasyEdge lawn comb for close trimming. You can use it with a battery or mains cable. The handle folds for storage. It weighs 32 pounds. This model suits small lawns where you need mulching.
- Hybrid technology allows battery or cable operation
- 37 cm cutting width for efficient coverage
- EasyEdge lawn comb for close-to-edge mowing
- Part of the 18 V ONE+ system
- Foldable handle rods for space-saving storage
- 2.5 Ah battery capacity is lower than competitors offering 4.0 Ah or 5.0 Ah
- 18 V voltage is lower than 40 V, 60 V, and gas options on the list
- 32 pound weight is heavier than many push mowers
- You already own 18 V ONE+ batteries
- You want the flexibility of battery or corded power
- You need a mulching mower for a small yard
- You need high power for thick grass
- You want to mow large areas without recharging
- You prefer lightweight equipment for easy handling
Verdict: RYOBI 18V Hybrid Lawnmower 37 cm fits users who already own 18 V ONE+ batteries and need a mulching mower for small, manageable lawns. The hybrid design offers power flexibility, though the lower voltage and battery capacity limit its use on larger or tougher terrain.
Worx 16-Inch 40V Cordless Mower
Best for: small lawns up to 1/4 acre
- Mowing Functions
- Mulching, 2-in-1, Bagging
- Cutting Width
- 16"
- Drive Type
- Push
- Voltage
- 40V
- Battery Capacity
- 4.0 Ah
- Motor Type
- Brushless
This Worx 16-inch push mower uses a brushless motor and two 4.0 Ah batteries for 40V power. It handles lawns up to 1/4 acre with Intellicut technology that adjusts speed based on grass density. The 16-inch cutting width and 1.1-bushel bag suit small yards. You get six height settings from 1.5 to 3.5 inches for precise trimming.
- Brushless motor provides 40% more power
- Intellicut technology adjusts cutting speed automatically
- 16-inch cutting width fits narrow paths
- Compatible with 140+ PowerShare tools
- Lightweight 33.8-pound design for easy handling
- 16-inch cutting width is narrower than most competitors
- Push drive requires more physical effort than self-propelled models
- 1.1-bushel bag capacity is smaller than larger deck models
- You have a small lawn up to 1/4 acre
- You need a mower for narrow garden paths
- You already own WORX PowerShare batteries
- You require a self-propelled drive system
- You have a lawn larger than 1/4 acre
- You prefer a wider 20-inch or larger cutting deck
Verdict: Worx 16-Inch 40V Cordless Mower fits owners of small, narrow lawns who want a lightweight, battery-powered tool. It trades deck width and self-propulsion for maneuverability and compatibility with existing WORX batteries.
PowerSmart 21-Inch 140cc Self-Propelled Mower
Best for: Mulching and bagging on slopes
- Mowing Functions
- 3-in-1, Mulching, Bagging, Side Discharge
- Cutting Width
- 21"
- Drive Type
- Self-Propelled
- Motor Type
- 4-stroke, OHV, single-cylinder
- Height Adjustments
- 6-position, 1.5 to 3.9 inches
- Engine Displacement
- 140cc
This PowerSmart mower features a 140cc 4-stroke OHV engine and a 21-inch cutting width. It includes a self-propelled drive system and a 6-position height adjustment ranging from 1.5 to 3.9 inches. The 3-in-1 design supports mulching, side discharge, and rear bagging. It weighs 64 pounds and includes a foldable handle for storage. This model suits users needing adaptable mowing functions for standard residential lawns.
- 21-inch cutting width for efficient coverage
- 140cc 4-stroke OHV engine with forced air-cooling
- Self-propelled drive system for traction on slopes
- 6-position cutting height adjustment from 1.5 to 3.9 inches
- 3-in-1 functionality with mulching, side discharge, and bagging
- 140cc engine displacement is lower than the 170cc and 201cc options in this guide
- 64-pound weight is heavier than many push or lighter self-propelled models
- 21-inch cutting width is narrower than the 22-inch and 33cm options available
- You need a self-propelled mower for uneven terrain or inclines
- You want mulching, bagging, and side discharge options in one unit
- You prefer a foldable handle for compact storage
- You require a wider 22-inch or larger cutting deck for faster mowing
- You prefer a higher displacement engine for more power
- You want a lighter mower for easy maneuverability
Verdict: PowerSmart 21" 140cc Self-Propelled Mower provides reliable mulching and bagging capabilities for standard lawns. It fits users who prioritize traction on slopes and versatile discharge options over maximum cutting width or engine power.
Specifications side by side
| Spec | SENIX 22-Inch 170cc Self-Propelled Gas Mower | Worx 21-Inch 40V Cordless Push Lawn Mower | SENIX 21-Inch 170cc Self-Propelled Gas Mower | BILT HARD 21-Inch 201cc Self-Propelled Gas Mower | Greenworks 60V 17-Inch Push Lawn Mower | SENIX 21-Inch Self-Propelled Gas Mower | Tyzar 459cc Hybrid Flail Mower | NovorikX 21-Inch 60V Self-Propelled Mower | PowerSmart 22-Inch Self-Propelled Gas Lawn Mower | PowerSmart 21-Inch 140cc Gas Push Mower | RYOBI 18V 33cm Mulching Lawnmower | RYOBI 18V 37cm Brushless Mower | RYOBI 18V Hybrid Lawnmower 37 cm | Worx 16-Inch 40V Cordless Mower | PowerSmart 21-Inch 140cc Self-Propelled Mower |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cutting Width | 22-inch | 21" | 21 in | 21" | 17" | 21 in | – | 21 in | 22" | 21" | 33 cm | 37 cm | 37 cm | 16" | 21" |
| Drive Type | Self-propelled | Push | Self-propelled, FWD | Self-Propelled | Push | Self-propelled, front-wheel drive | – | Self-propelled | Self-propelled, rear-wheel drive | Push | – | – | – | Push | Self-Propelled |
| Voltage | – | 40V | – | – | 60V | – | – | 60 V | – | – | 18V | 18V | 18 V | 40V | – |
| Battery Capacity | – | 5.0Ah | – | – | 4.0Ah | – | – | 2 x 5.0 Ah | – | – | 4.0 Ah | 5.0 Ah | 2.5 Ah | 4.0 Ah | – |
| Run Time | – | – | – | – | Up to 40 minutes | – | – | – | – | – | – | – | – | – | – |
| Mowing Functions | 3-in-1 (mulching, discharge, bagging) | 3-in-1 | 3-in-1 (mulch, bag, side discharge) | 3-in-1 | 2-in-1 | 3-in-1 | – | 3-in-1 (mulch, bag, side discharge) | 3-in-1 (mulch, rear discharge, bag) | 3-in-1 (discharge, bagging, mulching) | Mulching | 2-in-1 (pickup and mulching) | – | 2-in-1 (mulch, bag) | 3-in-1 |
| Motor Type | 170 cc 4-cycle OHV | Brushless | 170 cc 4-cycle OHV gas | 201cc 4-cycle OHV | Brushless | 170cc 4-cycle OHV | 459cc hybrid | 1200W brushless | 150cc Briggs and Stratton EX625 | 140cc Briggs&Stratton 4-stroke | – | Brushless | – | Brushless | 4-stroke, OHV, single-cylinder |
| Height Adjustments | 6-position (1.25" to 4") | 7-position, 1.5" – 4" | 6 positions, 1.25-3.75 in | 8-position (1.2" to 3.75") | 6-position, 1.5" to 3.15" | 6 positions, 1.25 to 3.75 inches | – | – | 6-position (1.5" – 3.9") | 6 adjustments (1.5 to 3.9 inches) | 25-65mm | 6 positions (20 to 70 mm) | – | 6-position (1.5" – 3.5") | 6-position, 1.5 to 3.9 inches |
| Power Type | Gas | Cordless | Gas | Gas | – | Gas | – | Cordless | Gas | Gas | – | – | – | Cordless | – |
| Engine Displacement | 170cc | – | 170cc | – | – | 170cc | – | – | – | 140cc | – | – | – | – | 140cc |
| Application | – | 1/2 Acre | – | – | – | – | Slopes | – | – | – | – | – | – | – | – |
| Lawn Size | – | – | – | – | – | – | – | – | – | – | – | – | – | 1/4 Acre | – |
| Cleaning Surface | – | – | – | – | Homes | – | – | – | – | – | – | – | – | – | – |
| Engine Stroke | – | – | – | – | – | – | – | – | – | 4-Stroke | – | – | – | – | – |
| Dimensions | 37.5 × 23.8 × 15.9 inches | 60 × 22 × 40.9 inches | 61 × 22.8 × 41.5 inches | – | 52 × 19.1 × 40.9 inches | 61 × 22.8 × 41.5 inches | 51.2 × 31.5 × 47.2 inches | 57.1 × 47.2 × 25.6 inches | 34 × 16 × 23 inches | 32.9 × 16.5 × 22.6 inches | 15.4 × 28 × 15 inches | – | 289 × 169 × 154 inches | 41.9 × 16.5 × 46.1 inches | 32.9 × 16.5 × 22.6 inches |
| Weight | 72.8 pounds | 55.6 pounds | 61.7 pounds | 89.2 pounds | 37.5 pounds | 61.7 pounds | 826 pounds | 86 pounds | 72 pounds | – | 19.2 pounds | 0.71 ounces | 32 pounds | 33.8 pounds | 64 pounds |
| Size | 22INCH-170CC | – | 21 Inch-170cc-6 Position | 21 inch self propelled | w/4.0Ah Battery | 21-Inch Gas-Powered | – | – | – | – | 33 cm cutting width | Ø 37 cm | – | – | – |
| Color | Blue | Black and Orange | Blue | – | Green and Black | Blue | Yellow | 2*5.0ah | Black+Nature Red | Black | black/green | Green | Green | Black and Orange | Black |
| Model | LSSG-H4 | WG752 | A025054-A | TMA-0562-N3-0513 | MO60L419 | LSSG-M10-III | TYZ-1000 | BLM160H-21SP | B8622S | B8621P | 5133004306 | 5133004582 | 5133004671 | WG737 | B8621SXC |
You can review deck dimensions, engine displacement, and weight specifications across the best mulching lawn mowers.
How We Selected These Mowers
We identified mulching capability by checking each Amazon listing for that specific function in the title or feature list. We only included one size or variant per product family to keep the guide focused and clear for you.
The products are ordered by availability first. Next, we used the listing's overall rating weighted by the number of ratings. Finally, we ranked them by how many of our specific criteria the published specs met. All details come from those listings, not physical testing.
Check Drive Type and Power Source
Match drive type to terrain
Self-propelled mowers move forward on their own, reducing your effort on slopes or large areas. The SENIX 22-Inch model uses a self-propelled drive with a 170cc engine, making it easier to handle medium yards. Push mowers like the PowerSmart 140cc require you to walk and push the unit. This works well for small, flat lawns where the extra weight of a drive system is unnecessary. Choose self-propelled if you want less physical strain during mowing sessions.
Select gas or cordless power
Gas mowers like the BILT HARD 21-Inch offer high engine displacement, such as 201cc, for consistent power in thick grass. Cordless options like the Worx 40V provide quiet operation and zero emissions. The Worx model uses a 40V system with a 5.0 Ah battery, suitable for half-acre flat lawns. Gas units need fuel and oil maintenance, while battery mowers require charging. Pick gas for heavy-duty work or cordless for easy, low-maintenance use in smaller spaces.
Evaluate battery voltage and capacity
Voltage indicates power, while amp-hour (Ah) capacity determines runtime. The NovorikX 60V mower uses dual 5.0 Ah batteries for extended runtime on medium to large lawns. Lower voltage systems, like the RYOBI 18V with a 2.5 Ah battery, are lighter but better for small yards under 350 m². Higher voltage and capacity allow you to mulch larger areas without stopping to recharge. Check these specs to ensure the mower lasts through your entire yard.
Choose cutting width for efficiency
A wider deck covers more ground per pass, speeding up mowing. The SENIX 22-Inch model features a 22-inch cutting width, ideal for medium yards. Narrower decks, like the 16-inch Worx 40V, maneuver easily around tight obstacles and small spaces. The Tyzar 459cc Hybrid offers a wide 31.5-inch deck but is a heavy remote-controlled unit for steep slopes. Match the deck width to your yard size to balance speed and maneuverability.
Verify mulching and discharge options
Mulching cuts grass into fine clippings that decompose in place. Most models offer 3-in-1 functions: mulching, bagging, and side discharge. The PowerSmart 21-Inch 140cc self-propelled mower includes these three modes for versatile grass management. Some units, like the RYOBI 18V 33cm, focus solely on mulching. Ensure the mower supports mulching if you want to return nutrients to your soil. Check the attribute list to confirm the specific mowing functions included with your chosen model.
Frequently asked questions
Which mower is best for steep slopes?
The Tyzar 459cc Hybrid Flail Mower is designed for steep terrain. It features remote control operation, which keeps you safe on difficult ground. The unit weighs 826 pounds and has a 31.5-inch cutting width. This heavy-duty build prioritizes stability and mulching power over tight maneuverability.
What is the lightest mulching mower on this list?
The RYOBI 18V 33cm Mulching Lawnmower is the lightest option at 19.2 pounds. It uses a 4.0 Ah battery and has a 28-inch width. Its compact size makes it ideal for small yards where quiet, lightweight operation is a priority for the user.
Do these mowers have bagging options?
Most models support mulching, bagging, and side discharge. For example, the SENIX 22-Inch 170cc Self-Propelled Gas Mower includes all three functions. The Worx 21-Inch 40V Cordless Push Lawn Mower also offers 3-in-1 capability. Check the attributes list for specific functions like 2-in-1 or 3-in-1.
Which mower is best for small lawns under a quarter acre?
The Worx 16-Inch 40V Cordless Mower is rated for up to 1/4 acre. It features a narrow 16-inch cutting width and a 4.0 Ah battery. The self-propelled drive helps with maneuverability, and the brushless motor ensures efficient performance in tight spaces.
Is a self-propelled drive necessary for mulching?
Self-propelled drives are not required but help with effort. The SENIX 22-Inch model uses self-propulsion with a 170cc engine for medium yards. However, the PowerSmart 21-Inch 140cc Gas Push Mower relies on manual pushing. Choose self-propelled for slopes or large areas to reduce physical strain.
Which mower has the widest cutting deck?
The Tyzar 459cc Hybrid Flail Mower has the widest deck at 31.5 inches. It is built for steep slopes and dense overgrowth. For residential use, the SENIX 22-Inch 170cc Self-Propelled Gas Mower offers a 22-inch width, providing strong power and wide coverage for medium-sized lawns.
Can I use existing batteries with these mowers?
Yes, if you own compatible systems. The RYOBI 18V models work with existing 18V ONE+ batteries. The Worx 40V mowers suit those invested in the Worx battery ecosystem. Check the voltage and battery capacity in the attributes to ensure compatibility with your current tools.
