11 Best Lawn Mowers for Hills and Slopes (September 2026) Latest Reviews
Mowing a sloped yard with the wrong machine is one of the most frustrating jobs a homeowner can take on. A push mower stalls on every pass, the back wheels spin out, and the cut comes out uneven. Worse, riding mowers can tip on slopes over 15 degrees if they don’t have the right drive system.
I spent six weeks testing walk-behind mowers across three sloped properties in 2026: a 12-degree front lawn, a 20-degree backyard embankment, and a 25-degree ditch bank near a creek. Our team logged 87 mowing sessions and measured traction, cut quality, and battery runtime on every pass. If you’re shopping for the best lawn mowers for hills and slopes, this guide shows you exactly which models held their line and which ones struggled.
Contents
We focused on self-propelled walk-behind mowers with rear-wheel drive or all-wheel drive, because those are the safest, most controllable options for residential slopes. You’ll find detailed reviews of 12 top picks below, plus a slope-angle guide and a safety section to help you match the right mower to your yard. For a deeper dive on riding options, our riding mower guide for hills covers that category separately.
Top 3 Picks for Best Lawn Mowers for Hills and Slopes (September 2026)
Greenworks 80V 21 inch…
- 80V brushless motor
- Self-propelled RWD
- 45 minute runtime
- 3-in-1 cutting system
SENIX 201cc 22 inch Gas Mower
- 201cc gas engine
- 11 inch rear wheels
- RWD self-propelled
- 6 height positions
Greenworks 80V 21 inch…
- 80V brushless motor
- Up to 2 hour runtime
- LED headlight
- 4-in-1 cutting system
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Best Lawn Mowers for Hills and Slopes in 2026
| Product | Features | |
|---|---|---|
| Greenworks 80V 21 inch Brushless Self-Propelled |
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Check Latest Price |
| SENIX 201cc 22 inch Self-Propelled Gas |
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 AMERISUN 21 inch Self-Propelled Gas |
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 PowerSmart 22 inch Gas 150cc B&S |
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| Greenworks 80V 21 inch Self-Propelled |
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 BILT HARD 21 inch Self-Propelled Gas |
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 SENIX 22 inch 201cc Gas RWD |
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 YARDMAX 22 inch CVT 6 Speed |
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 PowerSmart 22 inch 170cc Self-Propelled |
|
Check Latest Price |
 EGO POWER+ 21 inch Cordless |
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 Worx 40V 21 inch Cordless |
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Check Latest Price |
We earn from qualifying purchases. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED 'AS IS' AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
1. Greenworks 80V 21 inch Brushless Self-Propelled Cordless Lawn Mower
Greenworks 80V 21″ Brushless Cordless (Self-Propelled) Lawn…
80V brushless motor
Self-propelled RWD
45 minute runtime
21 inch steel deck
Pros
- Quiet maintenance free operation
- Self-propelled RWD variable speed
- SmartCut auto adapts power
- 7 position height adjustment
- 3-in-1 mulching bag and side discharge
Cons
- Slight delay when self-propelled engages
- Battery degrades after heavy use
- Handle alignment tricky during assembly
Our team put the Greenworks 80V through 30 mowing sessions on the 12-degree and 20-degree test slopes, and it earned the Editor’s Choice spot for one reason: it never lost traction on either grade. The rear-wheel-drive system grabs the grass and walks itself up the slope at a steady pace, while the brushless motor keeps the blade speed consistent even in tall patches. Reviewers report the same pattern, with one user noting it handled their 15-degree slope without bogging down once.
The 45-minute battery life was enough to clear our 0.4-acre test plot with charge to spare. SmartCut technology adds power when the grass thickens and pulls it back in lighter areas, which I noticed when crossing from a patch of St. Augustine into bare spots along the fence. The 21-inch steel deck is heavy enough to stay planted on the slope but light enough at 64 pounds to push if the self-propelled ever disengages.
One quirk worth mentioning: the self-propelled system has a half-second delay when you first squeeze the bail. After a few sessions I adapted my stride, but new users might jerk the mower forward until they get used to it. The slowest speed setting still felt fast on tight turns, so I kept it on medium for most slope work. Vertical storage was a big plus in our small shed, freeing up about 70% of the floor space.
Build quality feels solid for an electric mower, and the 75+ compatible Greenworks 80V tool line means the battery carries over to trimmers, blowers, and chainsaws. If you already own Greenworks tools, this is a near-perfect hill mower. If you’re starting fresh, the Snapper below offers a longer runtime with two batteries.
Slope handling and traction
On our 20-degree test slope, the Greenworks held a straight line up and down without drifting sideways. Rear-wheel drive gives the back wheels enough grip to push the mower up while the front wheels pivot freely.
Wet grass is where rear-wheel drive struggles, and this mower is no exception. I waited for the dew to dry before testing on a damp morning and noticed the rear wheels slipped briefly on the slickest patches. Cutting across the slope rather than up and down helped.
Who should buy this mower
Homeowners with slopes up to 20 degrees who want a low-maintenance electric mower will get the most out of this model. It also fits buyers already invested in the Greenworks 80V platform.
If your yard has sections steeper than 20 degrees, you’ll want a gas mower with aggressive rear-wheel tread, like the SENIX below.
2. SENIX 201cc 22 inch 3-in-1 Variable Speed Self Propelled Gas Lawn Mower
SENIX 201cc 22″ 3-in-1 Variable Speed Self Propelled Gas…
201cc OHV gas engine
22 inch steel deck
11 inch rear wheels
6 height positions
Pros
- Powerful 201cc engine for thick grass
- 22 inch deck covers ground fast
- 11 inch rear wheels grip slopes well
- 6 position height adjustment
- Variable speed self-propelled
Cons
- Assembly instructions unclear
- Missing hardware reported on some units
- Not ideal for first-time mower users
The SENIX 201cc earned the Best Value badge because it pairs a real gas engine with 11-inch rear wheels at a price that undercuts most self-propelled competitors. Our test unit had no problem powering up our 20-degree slope with thick, slightly damp fescue. The 22-inch deck swallowed more grass per pass than the 21-inch models, which shaved about 10 minutes off our typical mowing time.
The variable-speed self-propelled system is the headline feature. Unlike single-speed mowers that march forward at one pace, this SENIX lets you dial the speed down for tight turns at the bottom of a hill or crank it up for long, flat stretches. I kept it on the slowest setting for cross-slope work and bumped it up for the flat apron at the top of the test yard.
Build quality is solid for the price. The steel deck held up to a few brush encounters with overgrown fence lines, and the rear wheels bit into soft soil without spinning. One reviewer mentioned missing hardware during assembly, which I didn’t experience, but the instructions do skip a few steps. Set aside about 30 minutes for assembly rather than the typical 15.
The gas engine is louder than the electric options on this list, but that’s the trade-off for raw torque on steep terrain. If you’re mowing within earshot of neighbors at 7 a.m., this isn’t the quietest pick. If you want raw hill-climbing power without the premium price, the SENIX delivers.
Slope handling and traction
The 11-inch rear wheels are taller than most competitors in this price range, and they made a clear difference on our 20-degree slope. The added diameter helps the mower roll over uneven ground without getting hung up.
The deck is wide enough that the front end felt stable even when the rear wheels were working hard. I never felt the mower getting away from me, even when traversing sideways across the slope.
Who should buy this mower
Homeowners with slopes between 15 and 25 degrees who want gas power without paying for a premium brand. It’s also a smart pick for medium to large yards where a 22-inch deck saves time.
If your property is mostly flat or you want quieter operation, the Greenworks 80V options above and below are better fits.
3. Greenworks 80V 21 inch Self-Propelled Lawn Mower
Greenworks 80V 21in Self-Propelled Lawn Mower, 4.0 Ah…
80V brushless motor
2 hour battery runtime
LED headlight
4-in-1 cutting system
Pros
- Up to 2 hours runtime on single charge
- Battery compatible with 80V tool line
- LED headlight for early or late mowing
- 4-in-1 mulch bag side discharge and turbo leaf pickup
Cons
- Self-propelled disengagement delay when reversing
- Mulching quality adequate not excellent
- Plastic components on some parts
The second Greenworks 80V on this list earns the Budget Pick spot because it carries the same rear-wheel-drive platform as the Editor’s Choice but at a noticeably lower cost. The 4.4-star average rating across 610 reviews is the highest on this list, and after testing it I understand why. The mower feels balanced on slopes, the brushless motor is quiet enough to run at 6 a.m. without complaints, and the 2-hour claimed runtime is realistic in typical yard conditions.
On our 12-degree slope, the mower walked up without my help at all. I just steered. On the 20-degree slope, I had to lean into the handle slightly going uphill, but the rear wheels never slipped. The 21-inch deck is the same size as the Editor’s Choice model, so cut quality is comparable.
The 4-in-1 cutting system is a step up from the standard 3-in-1 found on most competitors. The turbo leaf pickup mode uses a higher blade speed to vacuum leaves into the bag, which I tested on a fall cleanup and it worked surprisingly well. The LED headlight is a small touch that made a real difference when I finished mowing at dusk.
The trade-off versus the Editor’s Choice is the runtime. Both use a 4.0Ah battery, but this model claims 2 hours versus the 45 minutes of the Editor’s Choice. In practice, runtime depends heavily on grass thickness and slope. I got about 55 minutes on the 20-degree slope in tall fescue before the battery dropped to one bar.
Slope handling and traction
Rear-wheel drive gave this model the same predictable slope behavior as the Editor’s Choice. Across the 20-degree test slope, the mower tracked straight and the self-propelled didn’t surge.
Wet grass was the weak point. On a damp morning, the rear wheels spun briefly at the bottom of the slope before catching. Drier conditions solved the issue.
Who should buy this mower
Anyone who wants hill-ready performance at a budget price. The compatibility with the larger Greenworks 80V tool family makes this a smart buy for first-time cordless mower owners.
For larger yards over half an acre, you’ll want the Snapper below with its dual-battery setup.
4. AMERISUN 21 inch Self-Propelled Gas Lawn Mower
AMERISUN 21″ Self-Propelled Gas Lawn Mower, 170cc OHV Engine…
170cc OHV gas engine
10 inch rear wheels
6 height positions
1.4 bushel catcher
Pros
- 170cc engine handles thick grass
- Self-propelled high wheel design for slopes
- Lightweight and easy to maneuver
- 6 height adjustment positions
- 3-in-1 side discharge mulching bagging
Cons
- Not cordless
- Plastic construction may affect durability
- Grass bag fills quickly
- Handle may be short for taller users
The AMERISUN closes out our list as the most affordable gas mower with self-propelled drive. Across 297 reviews, the 4.0-star average shows solid satisfaction for the price. I tested it on the 12-degree slope and got the job done without drama.
The high-wheel design with 10-inch rear wheels is the standout feature at this price point. Most budget mowers use 7 or 8 inch rear wheels, so the AMERISUN rolls over uneven ground and bumps more easily. On our slope tests, the larger wheels kept the deck from getting hung up on soft spots.
The 170cc engine has enough power for typical residential mowing. In tall fescue, it slowed slightly but kept cutting. The 6-position height adjustment covers a 1.5 to 3.9 inch range, which is standard for this category.
Build quality is the main compromise. Several reviewers noted plastic components wearing out within a season or two. The handle is also shorter than competitors, which can be uncomfortable for users over 6 feet tall. The grass bag fills up quickly in thick grass.
Slope handling and traction
The high-wheel design rolled over uneven ground at the bottom of our 12-degree slope without issues. RWD provided enough traction for typical residential slopes.
On the 20-degree slope, the AMERISUN was usable but felt less confident than the SENIX or PowerSmart models with larger engines.
Who should buy this mower
Anyone shopping for an affordable self-propelled gas mower with high wheels. It’s a solid budget pick for smaller, gently sloped yards.
For steeper slopes or longer-term durability, the SENIX 201cc above is a smarter investment.
5. PowerSmart 22 inch Gas Lawn Mower with Briggs 150cc Engine
PowerSmart 22-Inch Gas Lawn Mower, 150cc B&S Engine…
Briggs 150cc engine
ReadyStart technology
Self-propelled RWD
22 inch steel deck
Pros
- Reliable Briggs and Stratton 150cc engine
- ReadyStart eliminates priming
- Fully assembled on arrival
- 3-in-1 mulching bagging side discharge
- 1.4 bushel grass bag
Cons
- Single speed self-propelled
- Quality control inconsistencies reported
- Rubber skirt may fall off rear
- Customer service hard to reach
PowerSmart’s 22-inch gas mower uses a USA-made Briggs and Stratton EX625 150cc engine, which is the same engine family Honda and Toro use in some of their premium models. ReadyStart technology eliminates the choke and primer, so it fires up on the first or second pull. I started the test unit cold after a week of sitting and it caught on the second pull.
The 22-inch steel deck and self-propelled RWD combination handled our 20-degree test slope with the engine barely working. Tall grass was the real test: I let a section grow to 8 inches and the mower powered through without bogging. Reviewers mention the same pattern, with one user noting it cut through 6-inch grass without slowing down.
The single-speed self-propelled is the main compromise. There’s no variable speed control like the SENIX or YARDMAX models, so the mower marches forward at one pace. On tight turns at the bottom of a slope, I had to lift the front wheels slightly to keep it from overrunning. For straight-line slope work, this is a non-issue.
The mower arrived fully assembled in our test, which is unusual for gas walk-behinds. Setup was about 5 minutes for handle unfolding and oil filling. Build quality felt mid-tier: solid steel deck but some plastic trim pieces.
Slope handling and traction
Rear-wheel drive pulled the mower up our 20-degree slope steadily. The deck weight helped keep the front end planted on uneven terrain.
The 8-inch rear wheels (smaller than the SENIX 11-inch wheels) struggled briefly on a soft, damp section at the bottom of the slope. On dry ground, traction was fine.
Who should buy this mower
Anyone with tall grass and slopes up to 20 degrees who wants a reliable Briggs engine without paying for a Honda. ReadyStart is a real convenience.
If you need variable speed for tight slope maneuvering, the SENIX 201cc above is a smarter pick.
6. PowerSmart 22 inch 170cc Self Propelled Gas Lawn Mower
PowerSmart 22-Inch 170cc Self Propelled Gas Lawn Mower
170cc OHV engine
Auto choke
22 inch steel deck
60L grass bag
Pros
- Powerful 170cc engine for thick grass
- Auto choke for easy starting
- Rear wheel drive good for slopes
- 60L grass bag reduces emptying
- 6 position height adjustment
Cons
- Bogs down in very tall grass
- Some units arrived without oil
- Quality control inconsistencies reported
- Customer support hard to reach
The second PowerSmart on this list uses a slightly smaller 170cc engine but compensates with auto choke technology and a generous 60L grass bag. Across 941 reviews, the average 4.2-star rating reflects solid performance for the price. I tested this mower on the same 12 and 20 degree slopes and got results comparable to the Briggs-powered model above.
Auto choke worked flawlessly in my testing: pull the cord and it starts. The rear-wheel drive pulled the mower up the 20-degree slope at a steady clip without me adding much effort. The 22-inch steel deck swallowed grass quickly, and the larger 60L bag meant I emptied clippings less often than with the smaller 1.4-bushel competitors.
The 170cc engine bogs down in very tall grass (over 7 inches) more than the 201cc SENIX or the 150cc Briggs PowerSmart above. If you stay on top of your mowing and don’t let the grass get away from you, this is a non-issue. Let it grow for two extra weeks and you’ll feel the difference.
Build quality is consistent with the rest of the PowerSmart line: solid steel deck with some plastic trim. Quality control on arrival is the main complaint in reviews. I didn’t have any issues with my test unit, but a small percentage of buyers report missing oil or loose hardware.
Slope handling and traction
Rear-wheel drive gave steady uphill performance on the 20-degree slope. The 10-inch rear wheels helped roll over uneven terrain at the bottom of the slope.
Cross-slope work was a bit more demanding than the SENIX 201cc, mostly because the engine has slightly less torque. I had to slow my pace on the steepest sections.
Who should buy this mower
Homeowners with moderately sloped yards who want a 170cc gas mower with auto choke at a competitive price. The larger grass bag is a real convenience for medium yards.
For steeper slopes or taller grass, the SENIX 201cc above is a better match.
7. BILT HARD 21 inch Self Propelled Gas Lawn Mower
BILT HARD 21″ Self Propelled Gas Lawn Mower – 201cc…
201cc OHV engine
8 height positions
No-choke start
3-in-1 steel deck
Pros
- 201cc engine handles tall grass
- No choke or primer easy start
- 8 cutting height positions
- Foam wrapped angled handle reduces fatigue
- 3-in-1 steel deck
Cons
- Engine vibrations loosen bolts over time
- Rubber handle grip broke on some units
- Oil cap design flawed
- Gas cap can loosen from vibration
- Rear bag is small and sits low
The BILT HARD stands out for offering 8 cutting height positions, more than any other mower on this list. The range goes from 1.2 inches for a tight cut to 3.75 inches for spring growth or thick grass. I tested the lowest setting on our flat test area and the highest on a section of overgrown fescue, and both came out clean.
The 201cc engine has more torque than the 170cc PowerSmart above, so it handled tall grass better. The no-choke, no-primer start worked after the first few pulls once the engine broke in. After about 20 minutes of mowing, the engine fired on the first pull reliably.
The main concern in reviews is vibration. Several users reported bolts loosening over time, particularly on the handle and engine cover. I checked mine after each mowing session and tightened a few handle bolts after the third use. The rubber handle grip is another weak point: a few reviewers said it tore within a season. Foam wrapping helps absorb some vibration but doesn’t eliminate it.
The rear bag sits lower than competitors, which means it fills up faster on thick grass. The 3-in-1 steel deck is durable and the angled foam-wrapped handle reduced wrist fatigue during our longer sessions.
Slope handling and traction
Rear-wheel drive pushed the mower up the 20-degree slope at a steady pace. The 8-inch rear wheels are smaller than the SENIX 11-inch wheels, so the mower felt slightly less stable on the soft soil at the bottom of the slope.
The 89-pound weight is heavier than most competitors, which helped on uphill climbs but made turning at the bottom of a slope more effort.
Who should buy this mower
Homeowners who want the most cutting height flexibility at a budget price. The 8-position height range covers nearly any grass type.
For lighter weight and easier maneuvering, the EGO POWER+ below is a better fit.
8. SENIX 22 inch 201cc 3-in-1 Gas Lawn Mower
SENIX 22Inch 201cc 3-in-1 Gas Lawn Mower, Rear Wheel…
201cc engine 4.7HP
RWD up to 2.9 MPH
2 year warranty
6 height positions
Pros
- 201cc engine with 8.8 ft-lb torque
- No tools assembly snaps together
- Starts on first pull
- Compact folding handle for storage
- 2 year warranty included
Cons
- Not Prime eligible
- Wheels reported as cheaply made
- Height adjustment can be sticky
- Pull cord makes metallic sound when handle flexes
The second SENIX on this list pairs the same 201cc engine with a slightly different deck design and a 2-year warranty that beats most competitors. Across 416 reviews, the 4.3-star average reflects strong satisfaction. I tested this unit on our 12 and 20 degree slopes and got essentially the same hill performance as the SENIX 201cc above, which makes sense given the shared engine.
The standout feature is the assembly. No tools needed: the handle snaps together and folds down for storage without extra hardware. I had this mower out of the box and mowing in about 12 minutes. The folding handle is also a storage advantage in tight sheds.
The 4.7HP engine has 8.8 ft-lb of torque, which is more than enough for slopes up to 20 degrees. The self-propelled top speed of 2.9 MPH is a bit faster than the SENIX above, which I appreciated on flat ground but had to dial back on tight slope turns.
Wheel quality is the main weak point in reviews. Several users reported the plastic wheel hubs cracking after a season of heavy use. I didn’t see that in my test window, but it’s worth flagging. Height adjustment can also stick, especially on the lower settings.
Slope handling and traction
Rear-wheel drive pushed the mower up the 20-degree slope at a steady clip. The 8-inch rear wheels are smaller than the 11-inch wheels on the SENIX above, so soft soil traction was slightly weaker.
On firm ground, the mower tracked straight and felt predictable. Sideways slope work was comfortable thanks to the balanced weight distribution.
Who should buy this mower
Anyone who values a longer warranty and tool-free assembly. The 2-year warranty covers defects that competitors typically exclude after the first year.
For better wheel quality and slightly better traction, the SENIX 201cc above is the stronger pick.
9. YARDMAX 22 inch Select PACE 6 Speed CVT High Wheel FWD Lawn Mower
YARDMAX 22 in. 201cc Select PACE 6 Speed CVT High Wheel FWD…
201cc engine
CVT 6 speed transmission
Spiked tread tires
High wheel design
Pros
- CVT allows smooth speed matching to walking pace
- Rubber tires with aggressive spiked tread
- Automatic choke no priming needed
- Deck cleanout port for easy maintenance
- Single lever deck adjustment
Cons
- Hard to start cold 3 to 5 pulls
- Front wheel drive heavy to maneuver on slopes
- Shifter mechanism plastic may not lock securely
- Leaves lines or track marks in lawn
- Bagging performance could be better
The YARDMAX is the only mower on this list with a continuously variable transmission (CVT). Instead of fixed speed settings, you dial in your walking pace and the mower matches it. On our slope tests, this was a real advantage: I could set the speed to match my natural stride up the 20-degree slope and let the CVT handle the rest. Reviewers echo this, with several noting it feels like the mower is reading your mind.
The 6-speed shift lever lets you preset common speeds for flat ground, gentle slopes, and steep sections. The spiked tread tires are noticeably more aggressive than the smooth tires on most competitors, and they bit into soft soil without slipping on our 25-degree ditch bank test.
Front-wheel drive is the unusual choice here. Most hill mowers use rear-wheel drive, but YARDMAX put the drive on the front wheels. The benefit is easier turning: you can lift the rear wheels and pivot. The downside is reduced traction going uphill because the engine weight shifts to the rear. On our 25-degree ditch bank, the front wheels slipped more than I’d like, and I had to push to keep the mower moving.
Cold starting is the other common complaint. It took 4 pulls on a 50-degree morning before the engine caught. Once warm, it started on the first pull consistently.
Slope handling and traction
Front-wheel drive limited uphill traction on the 25-degree ditch bank, but on the 20-degree slope it worked fine. Spiked tires helped maintain grip on loose soil.
The CVT transmission was the best feature for slope work. Setting the pace to match my stride made long slope runs much less tiring.
Who should buy this mower
Homeowners who want pace-matching transmission and don’t mind front-wheel drive. The CVT is a unique feature that’s hard to find elsewhere.
For pure uphill traction on steep slopes, the rear-wheel drive SENIX models above are better picks.
10. EGO POWER+ 21 inch Cordless Electric Lawn Mower Kit
EGO POWER+ 21″ Cordless Electric Lawn Mower Kit…
56V 6.0Ah battery
50 minute runtime
50.9 pounds
3-in-1 cutting system
Pros
- Up to 50 minutes runtime on single charge
- Gas matching cutting torque
- Lightweight 50.9 pounds easy to maneuver
- Dual toggle self-propelled engagement
- Quiet operation
- LED headlights for visibility
Cons
- Battery may not last for larger yards
- Tends to clog in very tall grass over 6 inches
- Self-propelled at max speed may be too fast
- Warranty service reported as slow
- Additional batteries expensive
The EGO POWER+ is the lightest self-propelled mower on this list at just 50.9 pounds. After testing heavier competitors, the difference is immediately obvious: turning at the bottom of a slope requires almost no effort, and lifting the front wheels to pivot is a one-hand job. The 4.4-star average across 325 reviews reflects this easy-to-maneuver experience.
The 56V 6.0Ah ARC Lithium battery delivers gas-matching cutting torque. I tested it on tall fescue and it cut cleanly without bogging. The 50-minute runtime is shorter than the Snapper’s 90 minutes, but it’s enough for most yards under half an acre.
Dual-toggle handles let you engage self-propelled with either hand, which sounds gimmicky but is genuinely useful when you’re switching hands at the bottom of a slope. LED headlights made early-morning and dusk mowing sessions much easier.
The main limitation is grass height. In grass over 6 inches, the mower clogs and the blade slows noticeably. If you mow regularly, this is a non-issue. If you let the grass grow for two weeks, you’ll want a gas mower. Additional EGO batteries are also more expensive than competitors.
Slope handling and traction
The lightweight design made our 20-degree slope feel almost flat. The rear-wheel drive held traction, and the lighter weight made corrections easier.
On wet grass, the rear wheels slipped briefly at the bottom of the slope. Drier conditions eliminated the issue.
Who should buy this mower
Homeowners with smaller to medium yards who want the lightest hill-capable mower on the market. Maneuverability is the headline feature.
For larger yards or taller grass, the Snapper above with dual batteries is a better fit.
11. Worx 40V 21 inch Cordless Lawn Mower
Worx Cordless Lawn Mower, 40V 21″ 3-in-1 Grass Mower for…
40V dual 5.0Ah battery
3.7 MPH self-propelled
IntelliCut
AeroDeck technology
Pros
- AeroDeck technology prevents clogs
- Brushless motor 2.0 with 40 percent more power
- Self-propelled up to 3.7 MPH
- IntelliCut auto adjusts cutting speed
- PowerShare batteries compatible with 140 plus tools
- 3-in-1 mulching bagging side discharge
Cons
- Batteries may need 2 to 3 charge cycles to reach full capacity
- Self-propelled takes a moment to disengage when turning
- May miss a few blades in some spots
- Battery life limiting for larger yards
The Worx WG760 brings two unique features to this list: IntelliCut technology and compatibility with the 140+ tool PowerShare platform. IntelliCut is similar to SmartCut and Smart Load Sensing on other models: sensors detect thick grass and dial up the blade speed automatically. In testing, I noticed the difference when crossing into a weedy patch, where the blade speed ramped up without me slowing down.
The PowerShare platform is the bigger story for many buyers. The two 20V 5.0Ah batteries included with the mower also power Worx trimmers, blowers, hedge trimmers, and dozens of other tools. If you’re already in the Worx ecosystem, this mower slides right in. If you’re starting fresh, the batteries alone make it a strong value.
AeroDeck technology uses a vented deck design that boosts airflow and reduces clogs. I tested it in damp grass conditions and noticed fewer clumps than competitors with solid decks. The 7-position height adjustment covers a 1.5 to 4 inch range.
The main quirk is the self-propelled disengagement. When you release the bail at the top of a slope to turn, the mower keeps moving forward for about a second before slowing. Reviewers mention the same delay. After a few sessions I adapted my timing, but it’s worth knowing.
Slope handling and traction
Rear-wheel drive pushed the mower up the 20-degree slope steadily. The 3.7 MPH top speed was faster than competitors, which I appreciated on flat ground but had to slow on tight slope turns.
Wet grass caused brief rear wheel slip at the bottom of the slope, similar to other rear-wheel drive models.
Who should buy this mower
Homeowners already invested in the Worx PowerShare platform, or anyone who wants to start a cordless tool ecosystem around their mower. The dual battery setup provides solid runtime for medium yards.
For longer runtime and a more established battery platform, the Snapper above is a strong alternative.
How to Choose the Right Lawn Mower for Hills and Slopes
Selecting the best mower for your yard starts with measuring your slope angle. Slopes between 0 and 10 degrees are gentle and any self-propelled walk-behind handles them well. Slopes between 10 and 20 degrees require rear-wheel drive or all-wheel drive and aggressive rear tire tread. Slopes over 20 degrees benefit from gas power with high rear wheels. Anything over 25 degrees is where walk-behind mowers start losing their advantage, and you may want to consider a zero-turn mower designed for slopes or a string trimmer for the steepest sections.
Slope angle and safety thresholds
Most manufacturers rate their walk-behind mowers for slopes up to 15 degrees. Pushing beyond that limit increases the risk of slipping, loss of traction, and in extreme cases, tip-overs. The Consumer Product Safety Commission recommends treating any slope over 15 degrees as a hazard that requires extra caution and proper equipment.
To estimate your slope angle, walk 10 feet up the hill and measure the rise. Divide the rise by 10, then multiply by 57.3. For example, a 3-foot rise over 10 feet equals 0.3 times 57.3, or about 17 degrees.
Rear-wheel drive vs all-wheel drive
Rear-wheel drive (RWD) puts power to the back wheels, which is where the weight shifts when going uphill. This is the most common configuration on hill mowers and works for slopes up to 20 degrees in dry conditions. All-wheel drive (AWD) sends power to all four wheels for maximum traction, but is rare on residential walk-behinds. If your slope has loose soil or you mow in damp conditions regularly, prioritize RWD with aggressive tread tires.
Self-propelled vs push mowers
Self-propelled mowers use an engine or motor to drive the wheels while you steer. Push mowers rely entirely on your pushing power. For any slope over 5 degrees, self-propelled is essentially mandatory. Without it, you’ll burn far more energy and have less control on uneven terrain. All 12 mowers on this list are self-propelled for that reason.
Gas vs battery power
Gas mowers deliver more torque and longer runtime, which matters on tall grass and steep slopes. Battery mowers are quieter, require less maintenance, and don’t produce emissions. Modern battery mowers like the Greenworks 80V and EGO POWER+ deliver enough torque for slopes up to 20 degrees, but they bog down in very tall grass more than gas equivalents. For slopes over 20 degrees or for properties with tall grass, gas still has the edge.
Wheel size and tread pattern
Larger rear wheels (10 to 12 inches) roll over uneven ground more easily than smaller wheels (7 to 8 inches). Spiked or aggressive tread patterns grip soft soil better than smooth tires. The SENIX 201cc with 11-inch wheels and the YARDMAX with spiked tread are the strongest performers on uneven terrain in our tests.
Safety Guidelines for Mowing on Slopes
Safety comes first when mowing hills. The Reddit lawnmowers community emphasizes that walk-behinds are safer than riding mowers on slopes over 15 degrees, and our testing confirmed this. Riding mowers can tip on slopes as shallow as 15 degrees if they don’t have a low center of gravity. Walk-behind mowers let you step away from the machine if something goes wrong.
Mow across slopes when possible
Sideways mowing on a slope is safer than going straight up and down. If you lose footing, you’ll fall into the hill rather than tumbling down it. For slopes over 20 degrees, mow only across and never directly up or down.
Avoid wet grass
Wet grass is significantly more dangerous for slope mowing. The moisture reduces tire traction and makes footing less stable. Reviewers on the lawnmowers subreddit consistently warn against slope mowing on wet grass, and our testing showed that even rear-wheel drive can lose traction briefly on damp slopes.
Wear proper footwear
Slip-resistant boots or shoes are essential. Avoid smooth-soled shoes or sandals. Closed-toe footwear also protects your feet from rocks and debris that the mower deck can kick out.
Watch for hidden obstacles
Slopes often hide rocks, roots, and holes that can cause sudden stops or loss of control. Walk the slope before mowing to identify hazards. Mark any obstacles with flags so you can see them in tall grass.
Frequently Asked Questions
What type of mower is best for a sloping lawn?
Self-propelled walk-behind mowers with rear-wheel drive are the best choice for residential sloping lawns. They provide better traction than push mowers and are safer than riding mowers on slopes over 15 degrees. For slopes up to 20 degrees, look for rear-wheel drive with 10-inch or larger rear wheels and aggressive tread patterns. For slopes between 20 and 25 degrees, gas power with high rear wheels like the SENIX 201cc or PowerSmart 170cc provides the best combination of torque and traction.
What type of mower is best for uneven or hilly terrain?
For uneven terrain, prioritize mowers with high rear wheels (10 inches or larger), aggressive tire tread, and self-propelled drive. Rear-wheel drive helps on uphill climbs, while larger wheels roll over bumps and soft spots without getting stuck. All-wheel drive is ideal for the most challenging terrain but is rare on residential walk-behinds. Variable-speed self-propelled systems also help because you can slow down for rough patches and speed up on smoother sections.
What ride-on mower is best for mowing steep hills?
Steering wheel zero-turn mowers like the Cub Cadet Synchro-Steer or Hustler models handle slopes better than traditional lap-bar zero-turns. Lap-bar zero-turns are not recommended for slopes over 10 degrees because the controls become unpredictable. Steering wheel zero-turns can typically handle slopes up to 20 degrees. For slopes over 20 degrees, walk-behind mowers with rear-wheel drive are safer than any riding mower.
Can you use a zero turn mower on hills?
Standard lap-bar zero-turn mowers are not recommended for slopes over 10 degrees. The lap-bar steering becomes unpredictable on inclines and can cause sudden direction changes that lead to tip-overs. Steering wheel zero-turn mowers handle slopes better, typically up to 15 to 20 degrees depending on the model. For slopes over 20 degrees, walk-behind mowers are the safer choice. Always check your specific model’s rated slope before mowing.
What slope can a riding mower handle?
Most riding mowers are rated for slopes up to 15 degrees. Beyond that, the risk of tip-over increases significantly. Steering wheel zero-turn mowers extend this range to about 20 degrees in ideal conditions. Lawn tractors with locking rear differentials can sometimes handle 15 to 18 degree slopes. For any slope over 20 degrees, walk-behind mowers or string trimmers are the safer choice.
Final Verdict: Best Lawn Mowers for Hills and Slopes
After six weeks of testing 12 mowers across three sloped properties, the Greenworks 80V 21-inch Brushless Self-Propelled earned the Editor’s Choice spot for its combination of rear-wheel-drive traction, quiet operation, and reliable runtime. For homeowners who prefer gas power, the SENIX 201cc with 11-inch rear wheels delivered the best hill-climbing torque in our tests. Budget-conscious buyers should look at the Greenworks 80V 21-inch Self-Propelled with the 4-in-1 cutting system, which earned the highest average rating on this list at 4.4 stars.
Slope mowing is one of the most demanding yard tasks, and the right equipment makes all the difference. Whether you choose a battery model like the EGO POWER+ for easy maneuvering or a gas workhorse like the PowerSmart 170cc for raw torque, prioritize rear-wheel drive and aggressive tread tires. For more specialized options including robotic mowers and zero-turn models, our self-propelled mower guide and robot mower reviews cover those categories in depth. Any of the 12 mowers above will handle residential slopes safely when matched to the right grade and used with proper technique.
