The best self propelled lawn mowers for hills are rear-wheel-drive (RWD) or all-wheel-drive (AWD) machines, and the Greenworks 80V 21 inch brushless self-propelled mower is the one we would put on a sloped yard first. It keeps pushing with the wheels that carry the mower’s weight uphill, and it does it without a fuel tank.
That single specification matters more than engine size, deck width, or brand loyalty. Go uphill and your weight transfers onto the rear wheels; go downhill and the same transfer pushes the machine forward over its driven axle. Drive the loaded wheels and you climb. Drive the unloaded ones and you spin.
Before the recommendations, here is the short version of what decides whether a mower can handle your terrain:
Rear-wheel or all-wheel drive. Avoid front-wheel drive on hills. Its driven wheels carry little weight going uphill, so they slip instead of climbing.
Variable speed control. A dial or CVT lets you slow the drive to match the grade instead of dragging a fixed-speed machine up a slope.
Weight and torque. More mass plus low gearing climbs better, but a heavy machine is hard to pivot and hard to stop on a descent.
Rear-wheel design for control. Friction rear wheels, drum wheels, and rear rollers resist a downhill run in different ways, and that matters as much as climbing.
We compared ten self-propelled mowers across gas RWD, gas front-wheel, and cordless platforms, reading drive type, deck width, weight, engine displacement, battery capacity and torque rather than marketing copy. Ratings and review counts below come straight from the retail listings, and each mower carries the slope tier we would realistically place it in rather than an invented slope rating, because no manufacturer publishes one.
If you want the broader picture first, our general self-propelled lawn mower roundup covers flat-yard buyers. This page is the terrain version, and the shortlist looks completely different.
Table of Contents
Top 3 Self-Propelled Mowers for Hills in 2026
Greenworks 80V 21 in Brushless Self-Propelled
- Rear-wheel drive with variable speed
- Brushless motor with gas-like torque
- 45 min runtime on 4.0Ah battery
PowerSmart 22 in 150cc Self-Propelled Gas
- 150cc Briggs and Stratton engine
- Rear-wheel drive for incline slopes
- 1.4-bushel grass bag
Greenworks 60V 21 in Twin Battery Kit
- Two 4.0Ah batteries included
- Variable-speed rear-wheel drive
- LED headlight and 4-year warranty
The Greenworks 80V takes the top slot because reviewers consistently report it climbing steep banks on rear-wheel drive, and its 1701 reviews make it the most proven machine here. The PowerSmart is the durable low-cost gas answer for anyone without battery storage to think about. The Greenworks 60V twin-battery kit is the choice when the hill is only part of a large property and you do not want to stop mid-yard.
Best Self Propelled Mowers for Hills (October 2026)
| Product | Specifications | Action |
|---|---|---|
| Greenworks 80V 21 in Brushless Self-Propelled |
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| PowerSmart 22 in 150cc Gas Self-Propelled |
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| Greenworks 60V 21 in Twin Battery Kit |
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 SENIX 22 in 201cc Variable Speed Gas |
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 EGO Power+ LM2130SP Select Cut |
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 YARDMAX YG2860 22 in CVT |
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 EGO Power+ LM2134SP-2 Twin Battery |
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 EGO Power+ LM2135SP 7.5Ah Kit |
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 BILT HARD 21 in 201cc Gas |
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 Greenworks 40V 21 in Brushless |
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Two entries deserve an early flag. The YARDMAX YG2860 is front-wheel drive, and that rules it out as a hill climber no matter how good its tires are. The BILT HARD at 89.2 pounds has real rear-wheel drive but a fixed drive speed, which is exactly the specification that makes a hill miserable.
1. Greenworks 80V 21 Inch Brushless Self-Propelled: Best Overall for Hills
Greenworks 80V 21″ Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 4.0Ah Battery and 60 Minute Rapid Charger Included
80V brushless motor
21 in alloy steel deck
Rear-wheel drive with variable speed
64.2 lb
45 min runtime
Pros
- Rear-wheel drive climbs steep banks per reviewers
- Brushless motor delivers gas-like torque
- 45 min runtime on the included 4.0Ah battery
- Single-lever 7-position height adjustment
- No fuel or oil handling
Cons
- Self-propel takes 2-3 seconds to reach full speed
- Rear wheels can grab embedded grass and stall the drive
- Battery release lever needs firm pressure
This is the mower we would put on a genuinely sloped lawn, and the reason is that its reviewers keep describing the same result: rear-wheel drive with just enough hand pressure to keep the machine tracking up steep banks and ditch edges. The variable speed lever lets you dial the drive down rather than fighting a fixed pace with both arms.
Weighing 64.2 pounds, it sits in the middle of this group, which is a deliberate balance. It is heavy enough to hold a line downhill and light enough that a turn on a slope does not require lifting the deck with your foot.
The 21-inch alloy steel deck and brushless motor give it a torque profile that owners compare favorably with gas machines in tall, weedy growth, which matters on hills where the grass is often left longer between passes. SmartCut technology senses grass load and adjusts power output, so the drive does not bog on the thickest patches uphill.
Cutting height runs from 0.14 inches to 3.38 inches on a single lever that moves all four wheels together. It is a 3-in-1 machine handling mulch, rear bag and side discharge, and it shares its battery platform with more than 75 other Greenworks tools, which matters if the mower is one part of a larger battery setup.
Where it earns its place on a slope
Reviewers report this mower handling 35-degree ditch banks and steep hills, which places it in the 25-to-35-degree tier as the most capable cordless machine here. For a yard that is mostly gentle with one serious bank, it is the strongest fit on the list.
The brushless motor runs quietly enough for early or late hours, and the vertical storage format means a machine this capable does not have to live in the garage permanently.
Where it falls short
The self-propel motor takes two to three seconds to ramp to speed, so on a short slope you will feel the delay at the bottom of every pass. The slowest drive speed is still brisk for anyone who walks slowly, which matters more on hills where speed control is the whole point.
The rear wheels can grab embedded grass and stall the drive, and the battery release lever is hard to press with gloves on. Expect a second pass in very tall growth, since the machine has no extended-runtime blade to lean on.
2. PowerSmart 22 Inch 150cc Gas Mower: Rugged Rear-Wheel Drive Without the Battery Overhead
PowerSmart 22-Inch Gas Lawn Mower, 150cc B&S Engine, Self-Propelled, 3-in-1 Mulching System, 6 Cutting Heights, Rear-Wheel Drive, Durable Steel Deck
150cc Briggs and Stratton engine
22 in cutting width
Rear-wheel drive
72 lb
1.5 to 3.9 in height range
Pros
- Rear-wheel drive gives traction on incline slopes
- Reliable 150cc Briggs and Stratton engine with ReadyStart
- Durable steel deck with single-lever height adjustment
- 1.4-bushel bag cuts emptying stops
Cons
- Heaviest build in its class at 72 pounds
- Single-speed drive gives no pace matching on hills
- Fuel and oil maintenance required
If you want a machine that simply starts and climbs, this is the least complicated answer on the page. The rear-wheel drive is specified for incline slopes and uneven terrain, and the 150cc Briggs & Stratton four-stroke engine gives steady torque without an electric-start battery to fail later.
At 72 pounds it is not light, but that mass sits low and behind you on a climb, which is where you want weight on hilly ground. The 22-inch cut covers more ground per pass than most of the cordless machines here.
Height adjustment is a single lever with six positions from 1.5 to 3.9 inches, and the 3-in-1 system handles mulching, rear discharge and bagging through a 1.4-bushel bag. That bag size matters more than usual if you are mowing a slope, because stopping on a grade to empty a small bag is where machines get tipped.
Material listings describe the body as aluminum with a durable steel deck, which is a reasonable combination for a machine expected to hit roots and rocks in uneven ground.
Where it earns its place on a slope
Torque delivery is the reason this mower works on a grade. A four-stroke gasoline engine keeps pulling through tall or damp uphill grass in a way that smaller cordless platforms struggle to match, and reviewers point to the rear-wheel traction on sloped ground as the buying feature.
It suits a large hilly property where battery charging is impractical and where you accept noise, fuel storage and seasonal maintenance as part of the deal.
Where it falls short
The single-speed self-propelled drive is the honest weakness here. On a hill you cannot slow the machine down to match the grade, so you either walk at its pace and let it pull you or you end up carrying it.
At 72 pounds, making a turn on a slope means lifting or shoving the machine rather than pivoting it on a rear wheel. Two wheels down on a grade is also the exact position where fuel or oil handling is least convenient.
3. Greenworks 60V 21 Inch Twin Battery Kit: Two Packs, No Mid-Mow Charging Pause
Greenworks 60V 21in Self-Propelled Lawn Mower, (2) 4.0 Ah Battery Kit
60V brushless motor
Two 4.0Ah batteries
Rear-wheel drive with variable speed
65 lb
7 height positions
Pros
- Rear-wheel drive handles slopes and thick grass
- Two 4.0Ah batteries cover up to 3/4 acre per charge
- Brushless motor runs 3x quieter than gas
- LED headlight for dawn and dusk mowing
- 4-year limited warranty
Cons
- 65 pounds is heavy to move with the drive disengaged
- Two-battery kit format adds managing multiple packs
- Batteries charge separately with no cable storage
On a hilly yard the failure point for a cordless mower is rarely the motor, it is the moment the battery drops out mid-slope. Two included 4.0Ah packs remove that problem, since you swap on the flat part of the yard and keep going uphill.
Rear-wheel drive with on-the-go variable speed control handles slopes and thick grass, and reviewers rate this the best-built and best-value kit in the cordless group. The 4.4 rating across 619 reviews is the joint highest in this roundup.
The 60V brushless motor covers up to three-quarters of an acre per charge, which is a realistic figure on flat ground and a generous one for a property where the slope is a section rather than the whole lawn. Operation is described as three times quieter than gas with zero emissions.
Height adjustment spans seven positions from 1 to 4 inches, and the 4-in-1 deck handles mulch, bag, side discharge and a turbo leaf pickup setting. The LED headlight is genuinely useful on early or late starts in summer, which is when many people mow.
Where it earns its place on a slope
This is the machine for a large property with a hill on it rather than a hill-only property. The dual-battery workflow means the grade never forces a recharge, and the 60V platform has more torque headroom than the smaller 40V machines lower on this page.
Owners cite the rear-wheel traction on slopes, the quiet operation and the four-year warranty as the three reasons to buy over a single-battery kit.
Where it falls short
At 65 pounds it is the heavier of the Greenworks cordless machines here, and that shows up when the self-propel is disengaged and you are turning on uneven ground. Swapping batteries mid-session also means handling two packs per cycle.
On a slope steeper than roughly 20 degrees, expect runtime to fall well short of the flat-ground claim. Plan the charge schedule around the grade, not around the yard size on the spec sheet.
4. SENIX 22 Inch 201cc: Variable-Speed Gas Drive in a 64-Pound Package
SENIX 22″ 201cc Variable Speed Rear Wheel Self Propelled Gas Lawn Mower
201cc four-stroke OHV engine
Variable-speed rear-wheel drive
22 in cut
64 lb
1.25 to 4 in height range
Pros
- Variable speed matches pace to the terrain
- 201cc OHV four-stroke engine for steady power
- 22-inch width covers ground quickly
- Single-handle height adjustment syncs all four wheels
- 2-year warranty included
Cons
- Gas engine needs fuel and oil maintenance
- Some durability complaints around drive and engine over time
- No battery or quiet operation
This is the rare gas machine in this roundup that gets variable speed right. The rear-wheel drive uses a variable speed control rather than a fixed gear, which is the single feature that decides whether a self-propelled mower is pleasant or miserable on a grade.
At 64 pounds it is lighter than most of the gas machines here, including the PowerSmart above it and the BILT HARD further down, and that lower mass makes turning on a slope much easier.
The 201cc four-stroke OHV engine delivers consistent power with no mixing of oil and fuel, and the 22-inch width on a 3-in-1 steel chassis covers more ground per pass than any of the 21-inch cordless models. A single handle synchronizes height adjustment across all four wheels from 1.25 to 4 inches.
Discharge options cover a shredder or mulch setting, a side feed and a rear-mounted grass bag. The chassis is listed as stainless steel, which is a durability plus on ground that has roots and stones.
Where it earns its place on a slope
Variable speed plus 64 pounds plus a 201cc engine is the combination that suits a 15-to-25-degree grade. You can slow the drive into the hill, keep enough torque to climb it, and still pivot the machine without hoisting it.
Reviewers single out the variable-speed rear-wheel drive as the key feature for varied terrain, along with the wide cut and the single-handle height adjustment.
Where it falls short
It is a gas machine, so fuel, oil and a pull start are part of the ownership. On a slope that is inconvenient rather than impossible, since you will be starting the engine at the bottom and the top rather than next to a charger.
A small number of reviewers report durability concerns around the drive and the engine over time. That is worth weighing against the two-year warranty if you intend to keep the machine for a decade.
5. EGO Power+ LM2130SP: Light Cordless Choice if You Already Own EGO Batteries
EGO POWER+ Electric Lawn Mower, Self-Propelled Cordless with Select Cut and Touch Drive, Battery and Charger Not Included – LM2130SP
7.0 ft-lb brushless torque
54.5 lb frame
Touch Drive variable speed
1 to 4 in height range
5-year tool warranty
Pros
- Variable speed self-propel handles hills at 54.5 pounds
- 7.0 ft-lb of brushless torque cuts tall growth quietly
- Select Cut blades switch between mulching and bagging
- One-handle height adjustment is fast and even
Cons
- Battery and charger sold separately
- Touch Drive bar takes practice versus a handle-bar control
- 5.0Ah packs deliver only about 30-45 minutes
If you already run EGO 56V ARC Lithium tools, this mower weighs almost nothing to add to the setup. The 54.5-pound frame is the second-lightest self-propelled machine here, and on a slope that translates directly into easier turns and less strain on the descent.
Reviewers describe the variable speed self-propel as handling hills and rough terrain well at that weight. The brushless motor delivers up to 7.0 ft-lbs of cutting torque, which owners compare favorably with gas performance in tall, weedy growth.
Select Cut interchangeable lower blades cover mulching, high-lift bagging and an extended runtime option, so you can change the blade rather than change the machine when conditions change. A single handle sets deck height across eight positions from 1 to 4 inches.
Two bushels of bagging capacity, LED headlights, push-button start and IPX4 weather resistance round out a package that owners frequently call the best mower they have owned.
Where it earns its place on a slope
This is the pick for a hilly yard where weight is the deciding factor. A lighter machine is easier to control sideways on a grade, easier to bring back up if it stalls, and far less tiring over a long slope.
The 0.9 to 3.1 mph style of fingertip speed control is what makes it usable on a grade rather than merely operable. Some buyers report a bagging blade hole pattern that shipped mismatched, so check the blade before the first bagging pass.
Where it falls short
No battery or charger is included, so the real cost of this mower is not visible until you price a 7.5Ah pack. Reviewers report 5.0Ah batteries delivering roughly 30 to 45 minutes, well under the flat-yard maximum.
The Touch Drive bar takes getting used to compared with a traditional handle-bar control, and it is one of the most commonly discussed features on the platform for exactly that reason. Practice the speed dial before you take it onto the slope.
6. YARDMAX YG2860: High-Wheel Traction for Rough Patches, Not Long Grades
YARDMAX 22 in. 201cc Select PACE 6 Speed CVT High Wheel FWD 3-in-1 Gas Walk Behind Self Propelled Lawn Mower, Black (YG2860)
Select PACE 6-speed CVT
High-wheel front-wheel drive
84.9 lb
201cc engine
spiked rubber tires
Pros
- CVT transmission dials drive speed to your walking pace
- Spiked rubber tires and high wheels grip uneven ground
- Automatic choke starts without priming
- Deck cleanout port speeds underside cleaning
Cons
- Front-wheel drive is the wrong layout for sustained slopes
- Heaviest machine in this roundup at 84.9 pounds
- Harder to pivot in tight corners on a grade
We included this machine because it is genuinely excellent at something adjacent, and because seeing the difference teaches the drive-system lesson. The CVT transmission and high wheels with aggressive spiked rubber tires are superb on ruts, rough ground and uneven terrain.
But the drive layout is front-wheel, and that means the wheels doing the driving are the ones that lift away from the ground as you climb a sustained slope. On a hill you will be pushing it. On a rough flat patch with tree roots, it is excellent.
The 201cc gas engine pairs with an automatic choke system, so there is no priming and no manual choking. A deck cleanout port lets you clear the underside without awkward blade access, and a single lever handles deck height.
It is a 3-in-1 machine for mulching, bagging and side discharge, backed by a two-year residential warranty with spare parts listed as available for five years.
Where it earns its place
For uneven ground with roots, ruts and thin patches, the high wheels and spiked tread pattern make this one of the better machines in the group. The CVT lets you set drive speed precisely, which helps a lot when the ground is unpredictable rather than steep.
It is also the machine to consider if your yard is hilly in short, broken sections rather than one sustained grade.
Where it falls short
Do not buy it for a sustained slope. Front-wheel drive loses grip exactly where you need it most, and no amount of tire tread compensates for driven wheels carrying no load.
At 84.9 pounds it is the heaviest machine in this roundup, which makes it tiring on rough ground and awkward to pivot on a slope. If hills are your problem, the rear-wheel machines on this list are the correct answer.
7. EGO Power+ LM2134SP-2: The Longest Cordless Runtime Setup in This Group
EGO Power+ 21″ Cordless Electric Lawn Mower, Self-Propelled – LM2134SP-2
Two 56V 6.0Ah batteries
7.0 ft-lb brushless torque
0.9 to 3.1 mph Touch Drive
96 lb
8 height positions
Pros
- Two included batteries deliver up to 100 minutes of runtime
- 0.9 to 3.1 mph speed range handles steep grades
- 7.0 ft-lb torque matches or exceeds gas mowers
- Select Cut blade set covers mulching and bagging
Cons
- Heaviest build here at 96 pounds which loads the batteries
- Two batteries add bulk to store and charge
- Touch Drive bar is less intuitive than a handle-bar control
If the hill is long and you refuse to compromise on runtime, this is the configuration to look at. Two 56V 6.0Ah batteries are included and the claimed runtime reaches 100 minutes, which is the highest figure any cordless machine here carries.
The Touch Drive self-propel spans 0.9 to 3.1 mph, and that wide range is the feature that makes it work on a grade. You can crawl up a 25-degree section at the low end and run at pace on the flat run between slopes.
Torque from the brushless motor reaches 7.0 ft-lbs, and reviewers note it matches or exceeds gas mowers in heavy conditions. Select Cut interchangeable lower blades plus an upper blade cover mulching, high-lift bagging and extended runtime, with eight cutting height positions from 1 to 4 inches.
Bright LED headlights support dawn and dusk mowing, and the machine works with all EGO 56V ARC Lithium batteries under a five-year tool and three-year battery warranty.
Where it earns its place on a slope
The combination of battery capacity and a wide variable speed range is what makes this viable on a sustained grade rather than a bank you can climb in one burst. Runtime on flat ground is the stated maximum, so on hills assume a meaningful reduction and start with a full charge.
For a property where the lawn is one long slope plus flat areas, having two packs means the machine never stops in the middle of the grade.
Where it falls short
At 96 pounds this is the heaviest machine in the roundup, and that weight loads the batteries and drains them faster than the lighter EGO models. It also makes a sideways turn on a slope a two-handed operation.
The Touch Drive control style is less intuitive than a handle-bar drive bar, and two batteries plus charger is real bulk if your storage space is tight.
8. EGO Power+ LM2135SP: Battery, Charger and Variable Speed in One Box
EGO POWER+ 21″ Cordless Electric Lawn Mower Kit, Self-Propelled – LM2135SP
56V 7.5Ah battery included
CH5500 rapid charger
0.9 to 3.1 mph Touch Drive
55.3 lb
5-year warranty
Pros
- Battery and rapid charger included so nothing extra to buy
- Variable-speed drive keeps pace with you on hills
- 7.0 ft-lb of brushless torque
- 55.3-pound frame stores compactly
Cons
- Touch Drive bar takes practice versus a traditional drive bar
- Runtime runs roughly 45-60 minutes depending on grass load
- Battery and charger add bulk to the package
This is the most proven self-propelled cordless mower in the roundup by review volume, with 1644 reviews behind it, and it is the one we would pick for a hilly yard where owning a second battery is not on the agenda. The 7.5Ah pack and CH5500 rapid charger are both in the box.
At 55.3 pounds the frame is light for a self-propelled machine, and the 0.9 to 3.1 mph Touch Drive range means you can set the pace to the grade instead of matching the grade to the machine.
The CH5500 rapid charger recharges the 7.5Ah pack in 60 minutes, so a mid-session swap on a flat section costs you about as long as a coffee break. Brushless motor output reaches 7.0 ft-lbs of torque, which owners report exceeds what comparable gas machines deliver.
Select Cut blades allow mulching, high-lift bagging or extended runtime, cutting height runs from 1 to 4 inches, and LED headlights cover low-light mowing under a five-year limited warranty.
Where it earns its place on a slope
Reviewers specifically praise the smooth variable-speed drive on slopes, which is the thing that makes the difference between a mower that works on your hill and one you dread. Combined with the light frame, it is our pick over the heavier twin-battery EGO for a steep but smaller yard.
The all-in-one package removes the usual cordless friction of planning around a separate battery purchase, which is where a lot of first-time buyers go wrong.
Where it falls short
Single-battery runtime runs roughly 45 to 60 minutes depending on grass load, and that figure falls further on a grade. On a large property with a long slope, the twin-battery LM2134SP-2 above is the better tool.
The Touch Drive bar takes practice against a traditional drive bar, and the battery and charger add bulk to whatever you have to store.
9. BILT HARD 21 Inch 201cc: Simple Rear-Wheel Drive That Starts Without a Choke
BILT HARD 21″ Self Propelled Gas Lawn Mower – 201cc 4-Cycle OHV, 3-in-1 Bagging/Mulching/Side Discharge, 8 Adjustable Cutting Heights & Smooth Easy Start
201cc 4-cycle OHV engine
9.0 ft-lb of torque
Rear-wheel single-speed drive
89.2 lb
8 height positions
Pros
- Rear-wheel drive glides smoothly across sloped lawn
- 9.0 ft-lb of torque from a 201cc OHV engine
- No-choke no-primer starting design
- Single-lever height adjustment syncs all four wheels
- Foam-wrapped angled handle reduces hand fatigue
Cons
- Single-speed drive with no variable transmission
- Heaviest build in this roundup at 89.2 pounds
- Some reports of ignition wiring and spark plug holder issues
The 201cc four-stroke OHV engine here produces 9.0 ft-lbs of torque, the highest engine figure in the roundup, and the rear-wheel drive is the layout you want on a grade. The no-choke, no-primer starting design means you are not fiddling with a lever at the bottom of a slope.
That 89.2-pound build is a genuine trade. The mass helps hold a descent and gives the machine authority in tall grass, but it is the heaviest on the page and turning it sideways on a grade is real work.
The 3-in-1 steel deck handles mulching, side discharge and rear bagging, and a single lever synchronizes all four wheels across eight height positions from 1.2 to 3.75 inches. A foam-wrapped angled handle is a small touch that shows up in shoulder fatigue over a long slope.
Owners like the easy start and the one-lever height adjustment. A small number of reviewers report units failing to start from a loose spark plug wire connection, which is worth checking on a new machine before you rely on it.
Where it earns its place on a slope
Torque and rear-wheel drive are the two things that matter, and both are here. If your slope is steeper than about 15 degrees and the grass is long, this has the low-end grunt to keep moving where smaller cordless platforms bog down.
It also suits anyone who does not want to think about batteries at all. Refuel, pull, mow.
Where it falls short
The single-speed drive is the problem on hills. With no variable transmission you cannot slow the machine to match a grade, so on anything but a gentle slope you are either pulled or carrying.
At 89.2 pounds it is the heaviest machine here, and the fixed drive speed makes that weight harder to manage rather than easier. The ignition wiring reports are isolated but real.
10. Greenworks 40V 21 Inch: The Lightest Build Here and the Weakest Power Plant
Greenworks 40V 21″ Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 5.0Ah Battery and Charger Included
40V brushless motor
21.7 lb build
Rear-wheel variable-speed drive
8 inch front wheels
7 height positions
Pros
- Only 21.7 pounds so it is light to control on a grade
- Variable-speed transmission matches pace to the slope
- Rear-wheel drive climbs a steep incline
- Large rear wheels roll over obstacles easily
Cons
- 40V platform bogs down in tall thick or wet grass
- 5.0Ah battery yields roughly 25-36 minutes
- Heavier in tight corners than smaller models
- Manual is poorly written
At 21.7 pounds this is by far the lightest machine in the roundup, and on a hilly yard that is not a trivial advantage. Turning at the bottom of a slope, recovering from a stall, or repositioning sideways all become manageable when the mower weighs less than most of your garden equipment.
Owners confirm the variable-speed transmission is intuitive and responsive, and that the rear-wheel drive handles a steep incline. The alloy steel deck and large rear wheels roll over obstacles without digging in.
The problem is power. Reviewers consistently report the 40V platform bogs down in tall, thick or wet grass and can stall outright, which on a grade is where you least want a stall. The 5.0Ah battery delivers roughly 25 to 36 minutes in real use rather than the advertised 45.
Height adjustment is a single lever across seven positions from 1.38 to 3.75 inches, and the 3-in-1 deck handles rear bag, side discharge and mulching under a three-year limited warranty.
Where it earns its place on a slope
Short, steep but manageable slopes where the grass is not overgrown, and for anyone who finds a 60-pound-plus machine tiring to handle. The light weight also makes it the easiest machine here to lift and carry, which matters if the lawn is reached by steps.
It also shares a battery platform with more than 75 other Greenworks 40V tools, so it can join an existing low-voltage setup.
Where it falls short
The power ceiling is real. In wet or overgrown grass on a slope, this machine stalls, and a stalled mower halfway up a grade is the situation every owner is trying to avoid.
Runtime of 25 to 36 minutes on a 5.0Ah pack means you are swapping batteries or recharging mid-session, which on hills eats into the time you saved with the light frame.
Battery Runtime on Hills Is Not the Number on the Box
Every runtime figure on this page is a flat-yard figure measured in near-ideal conditions, and hills are the condition where those numbers stop being useful. Climbing a grade consumes power for the drive system on top of the power going to the blade, so the same battery delivers noticeably less mowing time.
The practical consequence is simple. A machine rated for 45 minutes may give you 25 to 30 on a sustained slope, and a machine rated for 100 minutes with two batteries gives you something closer to a full yard’s worth of cutting time once the grade is included. Budget for a pack change at the top of every sustained climb rather than finishing a pass.
Voltage matters as much as capacity. The 40V machine on this page is the lightest and most controllable but bogs in thick grass, while the 60V and 56V platforms have the torque headroom to keep cutting through wet uphill growth without stalling. On a slope, torque headroom is worth more than capacity, because a stalled mower at the top of a hill is the failure everyone wants to avoid.
Two-battery kits solve the sequencing problem rather than the power problem. The Greenworks 60V kit and the EGO LM2134SP-2 let you charge at the flat part of the property and swap on demand, which is why both appear high on this list despite heavier frames.
How to Mow a Hill Without Losing Control of the Machine
Most of what makes a mower dangerous on a slope is technique, not hardware. Every mower manual in this category warns against slopes above about 15 degrees, and the reason is that the machine’s ability to stay in your hands fails before its cutting ability does.
Never mow wet grass on a slope. Wet grass reduces traction on every machine regardless of drive system, and that is the single condition under which downhill failures actually happen. Never mow a slope where you cannot walk it comfortably while carrying something awkward.
Mow across the grade, not straight up it
Mow across or perpendicular to the slope rather than straight up and down it. Going across, the machine is working sideways against gravity rather than driving into it, and if it does start to slide you can step aside rather than being behind it.
Straight up-and-down mowing also produces a visibly rough, torn cut on uneven ground, which owners with 25-to-30-degree front lawns report clearly. If you want stripes, treat the slope as a separate mowing zone rather than forcing one pattern across the whole yard.
Set the drive to its lowest speed before you enter the grade and raise it gradually as the ground flattens. On a fixed-speed machine, the equivalent is to shorten your stride and let the machine pull rather than pushing it down the hill.
What to do with a hill too steep to mow
If your slope is steeper than about 35 degrees, no consumer walk-behind is the right tool, and searching for a mower rated for that angle will not produce one. Consumers frequently look for a machine for a 45-degree slope, and the honest answer is that no walk-behind sold today is rated for it.
Convert the area to a no-mow zone or native meadow. This is the most common professional recommendation and it removes the problem rather than managing it. Beyond about 30 degrees, retention pond banks and other steep ground, experienced commercial users report even large walk-behinds being too heavy and lacking the clearance to work safely.
For a slope you want to keep short, hire a contract trimming service with the right equipment for steep ground. For a slope at the edge of what a walk-behind can manage, a stand-on mower with a floating deck or a commercial zero-turn is the correct upgrade path.
Buying Guide: Matching the Machine to Your Slope and Yard
Start with drive type. Rear-wheel drive is the requirement, and front-wheel drive is a disqualifier for sustained slopes regardless of tire quality. Variable speed control is the feature that decides whether you will enjoy the machine, because it is what lets you match the drive to the grade.
Then weigh the machine against the slope. Heavier is better for holding a line and climbing in tall grass, and worse for pivoting on a grade. Above about 25 degrees, prioritize torque and drive layout over manageability, because a machine you cannot turn is a machine you will lift.
Measure the grade before you buy. A tape measure and a guess will not tell you whether you are dealing with a 10-degree roll or a 30-degree bank, and the difference decides your drive layout. Our roundup of self-leveling laser levels covers the tools that read a grade accurately, which is a cheap step before you commit to a machine.
Match deck width to yard size. A 21-inch deck is the sweet spot for most suburban hilly yards and keeps the machine narrow enough to turn between trees. A 22-inch deck covers more ground per pass, which matters on a large property, at the cost of a wider turning radius.
Decide how you will cut. Mulching returns clippings to the lawn and is the fastest option on a slope, since you are not stopping to empty a bag on a grade. Bagging suits thick growth and collection, and the 1.4-bushel bag on the PowerSmart reduces how often you stop on uneven ground. Side discharge is useful where you have somewhere for the clippings to go.
Consider the rear-end design. A friction rear wheel slows through deck pressure, a drum wheel resists rolling harder, and a rear roller adds weight over the drive axle. On your yard specifically, whichever design resists a downhill run without making the machine fight you on the way back up is the right one.
Know when to move past a walk-behind. If your slope exceeds roughly 30 degrees, or if you are maintaining more than an acre of hilly ground, a stand-on mower or a zero-turn with a floating deck will handle the terrain that no walk-behind should. Zero-turns need caution on steep grades, since the drive wheels at the rear pivot the machine in a way that takes practice on a slope.
Noise and local rules are worth a quick check too. Cordless machines run three times quieter than gas with zero emissions, which matters in close-set neighborhoods where an early start is the only realistic time on a busy property. Our guide to self-watering planters covers another part of the yard where the same grade affects drainage and plant selection.
Frequently Asked Questions
Do self-propelled mowers work on hills?
Yes, up to the point the manufacturer warns about. Self-propelled mowers handle hills well when the driven wheels are at the rear, because those wheels carry the mower’s weight as it climbs. Manufacturers generally warn against slopes above about 15 degrees, and past that the machine can slide even with good traction.
Which self-propelled mower is best for steep hills?
For steep hills within walk-behind limits, the Greenworks 80V 21 inch brushless self-propelled mower is the strongest all-round pick, with rear-wheel drive, variable speed and 64.2 pounds. Reviewers report it climbing steep banks and ditch edges. For slopes beyond roughly 30 degrees, move up to a stand-on or commercial machine instead.
What type of mower is best for uneven or hilly terrain?
For hilly ground, choose rear-wheel drive with variable speed control and enough torque to keep cutting through long uphill grass. For uneven rather than sloped ground, prioritize large rear wheels, deck clearance and a steel deck. Cordless platforms keep weight down, while higher-displacement gas engines keep torque up in wet growth.
What is the best lawnmower for steep slopes?
Drive type comes first: rear-wheel drive, never front-wheel drive on a sustained slope. Within walk-behinds, a variable-speed rear-wheel machine in the 150cc to 201cc gas class or a 56V or 60V cordless platform will handle grades up to roughly 25 degrees. Beyond that, steep slopes need a stand-on mower, a zero-turn with a floating deck, or a contract trimming service.
What to do with a hill too steep to mow?
Convert it to a no-mow zone or native meadow, which is the usual professional recommendation for sustained slopes. If you want it kept short, hire a contract trimming service equipped for steep ground. No consumer walk-behind is rated for anything approaching a 45-degree slope, so equipment selection cannot solve it.
The Verdict: Which Mower Handles Your Hills Best in 2026
The best self propelled lawn mowers for hills all share one non-negotiable trait: rear-wheel drive. Everything after that is a judgement about your grade, your grass length and your patience for fuel and oil. The Greenworks 80V is our pick for most hilly yards because it climbs and it turns. The SENIX 22 inch is the pick if you want variable speed without a battery. The Greenworks 60V twin-battery kit covers a large property without stopping mid-slope.
Check the slope before you check the spec sheet, and stay within the about 15-degree manufacturer warning. If your yard is steeper than a walk-behind should go, the correct answer is a stand-on mower or a service, not a better mower.