Worx 40V Lawn Mower Review: Honest Performance Results After Real-World Testing
We ran the Worx 40V mower across three lawn types, tracked battery runtime to the minute, measured noise levels, and compared cut quality side-by-side against EGO, Greenworks, and Ryobi. Here’s exactly what we found.
Quick Verdict
The Worx 40V mower punches above its price class in cut quality and maneuverability, making it a compelling option for small-to-medium yards up to about ½ acre. Battery runtime trails the premium EGO platform, and the plastic deck construction limits long-term durability expectations — but at its price point, the value proposition is genuinely strong.
Why the Worx 40V Deserves a Closer Look
Worx has been the brand that serious lawn tool enthusiasts have often overlooked — not because it’s bad, but because it sits in a crowded mid-market position between budget brands and the premium players like EGO and Milwaukee. The 40V lineup, however, represents a meaningful step up from entry-level battery mowers, and after putting it through our testing protocol, we came away with considerably more respect for what Worx has engineered here.
The 40V platform is part of Worx’s PowerShare ecosystem — the same 20V batteries used across their tool lineup pair up to deliver 40V output. This dual-battery approach has real practical advantages: you can charge two smaller batteries faster than one large battery, and you likely already own compatible batteries if you’re in the Worx ecosystem. It’s a smart platform decision that differentiates them from brands that require proprietary high-voltage single packs.
For context on how this stacks up against the broader electric mower market, our comprehensive electric lawn mower reviews cover the full competitive landscape, from budget options to premium performance machines. But today, we’re focused entirely on what Worx’s 40V platform actually delivers in real-world conditions.
Testing Methodology
We tested across a ⅓-acre suburban lot with mixed Bermuda and fescue turf, a ½-acre property with mature Kentucky bluegrass, and a challenging ¼-acre with slopes, obstacles, and tall (5-inch) overgrown grass. All battery runtimes recorded at 72°F ambient temperature using the included batteries at full charge.
Worx 40V Mower Models: Which One to Buy
Worx offers several 40V mower variants. Understanding the differences is critical to making the right purchase — the specs diverge more than the model names suggest.
- Deck Width14 inches
- DriveSelf-Propelled
- Battery2×20V (4Ah)
- Cut Heights6 positions
- Cutting ModesMulch / Bag
- Deck Width17 inches
- DrivePush
- Battery2×20V (4Ah)
- Cut Heights7 positions
- Cutting ModesMulch / Bag / Discharge
- Deck Width17 inches
- DriveSelf-Propelled
- Battery2×20V (4Ah)
- Cut Heights7 positions
- Cutting ModesMulch / Bag / Discharge
Our Recommendation by Yard Size
Under ¼ acre: WG779 (compact, nimble, great for tight spaces). ¼–½ acre: WG744 self-propelled for comfort, WG743 push if budget is the priority. Over ½ acre: consider stepping up to EGO or a higher-voltage platform — the 40V dual-battery system will struggle with consistency on larger properties.
Full Specifications — WG779 (Primary Test Unit)
PowerShare Battery Platform: The Defining Feature
Worx’s PowerShare platform is the architectural decision that shapes the entire 40V mower experience. Rather than designing a proprietary high-voltage single battery pack, Worx uses two standard 20V batteries in series to achieve 40V output. The practical implication is significant: if you already own any Worx 20V tools — a drill, a trimmer, a blower — those batteries work directly in the mower.
This matters more than it sounds. The average homeowner who’s already in the Worx ecosystem can buy the mower bare-tool (without batteries) and potentially save $80–100. And because 20V packs are lighter and more numerous in the product ecosystem, charging logistics are simpler: two smaller batteries charge faster and can be rotated more easily than a single large capacity pack.
The flip side is that raw energy storage is limited by the 20V form factor. Two 4.0Ah 20V batteries deliver 80Wh + 80Wh = 160Wh of usable energy — less than a single high-voltage 56V 5.0Ah pack found on the EGO Power+ series (280Wh). That energy gap shows up directly in runtime on larger properties.
Battery Performance: Runtime, Fade, and Recharge
Battery runtime is the make-or-break spec for any cordless mower, and it’s also the spec most frequently misrepresented in manufacturer marketing. Claimed runtime figures are almost always derived from ideal-conditions testing on flat ground with dry, short grass at the battery’s peak state of charge. Real-world use is different on every dimension.
Measured Runtime Results
The 47-minute runtime in ideal conditions is respectable for a dual-20V platform. It translates to roughly 2,800–3,200 square feet of mowing per charge — enough for most small suburban lots but falling short of ½-acre properties without a battery swap or mid-mow recharge. The Worx 14-inch deck also means you’re making more passes per square foot than a 21-inch deck, which slightly amplifies the coverage limitation.
Power fade is where we found something worth noting: the Worx system maintains consistent power output for approximately the first 75% of the charge cycle, then drops off more noticeably in the final 25% than some competing platforms. You’ll notice slightly less aggressive cutting in the last 10 minutes of a session, particularly in denser turf. It’s not a deal-breaker, but EGO’s battery management system handles fade more gracefully.
Cold Weather Impact
Testing at 45°F ambient temperature, runtime dropped from 47 minutes to 31 minutes — a 34% reduction. This is consistent with lithium-ion chemistry behavior (cold temperatures reduce the chemical reaction rate inside cells), but it’s a significant real-world consideration if you live in a northern climate where early spring and late fall mowing happens in cold conditions. Store batteries indoors before and after cold-weather use to maximize session performance.
Half-Acre Owners: Plan for a Battery Swap
If your mowing area approaches ½ acre, budget for a second set of 20V batteries (typically $50–70 each, or available in combo deals). Two full charges handles ½ acre in most conditions. The 92-minute total recharge time for both pairs means you can finish the job without a long wait if you start with one set and charge the other mid-job.
Cutting Performance: How Good Is the Actual Cut?
This is where the Worx 40V earns its strongest marks. The cut quality — the cleanness of blade separation, evenness across the deck width, and mulch particle size — consistently impressed us throughout testing. Worx has clearly invested in blade and airflow geometry, and it shows.
Blade and Deck Design
The single steel blade runs at a motor speed sufficient to produce a clean, even cut on both cool-season and warm-season grasses at their respective recommended heights. The turbine-style deck airflow creates a strong lifting effect on grass blades before cutting — critical for achieving a uniform cut height on natural grass that grows at varying angles.
The 14-inch deck on the WG779 (and 17-inch on the WG743/744) features a defined cutting chamber that performs well in mulching mode. Mulch particles are fine enough to decompose quickly without leaving visible clumps, even at moderate mowing lengths. Passing clippings through the bag is efficient with minimal clumping in the chute.
Performance in Difficult Conditions
| Condition | Performance | Notes | Rating |
|---|---|---|---|
| Dry, Short Grass (2–3″) | Excellent | Clean, even cut; minimal second-pass needed | 9/10 |
| Moderate Grass (3–4″) | Very Good | Consistent performance; light blowout at edges | 8/10 |
| Tall / Overgrown (5″+) | Acceptable | Power fade under heavy load; recommend two passes | 6/10 |
| Wet Grass | Below Average | Significant clumping; chute clogs at bag 50%+ full | 5/10 |
| Slopes (up to 15°) | Good | Maintained traction and cut quality | 8/10 |
| Edging (straight lines) | Very Good | Compact deck makes precise edge passes easy | 8/10 |
| Mulching Mode | Excellent | Fine particle size; clean deck without clumping | 9/10 |
Cutting Height Adjustment
The 6-position (WG779) or 7-position (WG743/744) cutting height adjustment uses a single central lever — a massive convenience upgrade over the per-wheel adjustment found on some competing models. The range of 1.5–3.5 inches covers most grass type recommendations adequately, though we’d prefer a 4-inch maximum to better accommodate tall fescue summer heights. Warm-season grasses are well-served within the existing range.
One minor gripe: the click resistance between height positions is lighter than we’d like. The lever occasionally moves during a bumpy pass over uneven terrain. It’s not common, but we noticed it during rough-ground testing. Checking height setting before each session takes 5 seconds and eliminates any concern.
Mulching Tip
For best mulching results, mow at intervals that remove no more than ⅓ of blade height per pass. At this frequency, the Worx mulching system produces genuinely excellent results — fine, decomposable particles that disappear into the turf within days. Push it to ½-height removal and you’ll see visible clumps regardless of how good your mower is.
Design & Build Quality: Where Worx Saves Costs
Let’s be direct: the Worx 40V mower is built to a price point. The plastic deck construction, lightweight handle assembly, and budget-grade bag material are all visible compromises that keep the price competitive. None of these compromises are dealbreakers for casual residential use, but they are genuine differences from the build quality of EGO or Greenworks Pro.
Deck Construction
The high-impact plastic deck is Worx’s most discussed build quality decision. Steel decks resist impact damage better, won’t crack from a hard rock hit, and have a longer structural lifespan. Plastic decks, when well-engineered (and the Worx deck is well-engineered for its material), are lighter, corrosion-proof, and quieter. For a homeowner who mows a maintained suburban lawn and stores the mower properly, the plastic deck will last a full decade without problems. For someone mowing rough terrain with frequent debris encounters, it’s more of a concern.
Handle and Ergonomics
The folding handle design is genuinely excellent — one of the best in the class. The fold-flat storage design allows the mower to be stored vertically against a wall in about 12 inches of floor space, a major practical advantage for garage-tight homeowners. Handle height adjustment offers two positions, and the padded grip reduces hand fatigue on longer sessions.
The battery indicator LEDs on the handle provide a clear charge-state readout, though we’d prefer a percentage display over the three-bar system — knowing you have “33%” versus “1 bar” makes planning the mowing session more precise.
Wheel and Drive System
The rear-wheel drive system on the self-propelled WG779 and WG744 models provides good traction on moderate slopes. The drive speed isn’t adjustable on the WG779 — it runs at a single fixed pace — which is one of the more notable limitations compared to variable-speed drive systems on mid-range EGO or Greenworks Pro models. On flat terrain this isn’t an issue, but the inability to slow down precisely when navigating around tight obstacles or working on steeper grades is a genuine usability compromise.
Ease of Use: Where Worx Actually Wins
Ease of use is the Worx 40V’s biggest surprise. In our hands-on testing, this mower consistently felt more intuitive and maneuverable than its specs suggested it should. The compact 14-inch deck on the WG779, combined with light overall weight (38 lbs with batteries), makes it genuinely pleasant to use in ways that larger, heavier machines aren’t.
Startup and Operation
Insert batteries, press the safety button, squeeze the bail — the mower starts instantly, every time. No priming, no choke, no cord pull. No hesitation from a flooded engine, no starting trouble after a 3-month winter sit. Battery mowers eliminate the most common source of homeowner frustration with lawn equipment entirely, and this benefit compounds every time you use it. If you’ve ever faced a lawn mower that won’t start in spring, you know how much this matters — our troubleshooting guide on lawn mowers that won’t start documents just how many things can go wrong with gas-powered machines.
Maneuverability
The 14-inch deck on the WG779 is genuinely compact. Navigating around landscaping beds, trees, downspouts, and garden features takes fewer turns and less repositioning than a 21-inch deck. For yards with significant obstacles, this translates to noticeably faster total mowing time despite the narrower swath. The 17-inch deck on the WG743/744 is still compact by industry standards, striking a better balance between coverage per pass and maneuverability for medium-sized lots.
Storage Setup
The fold-flat handle design stores the entire mower in a 12×24-inch floor footprint when folded vertically against a wall. This is significantly more space-efficient than most competitors. Worx provides a wall-hanging bracket that costs a few dollars and makes the storage solution genuinely elegant.
Maintenance Requirements
Electric mower maintenance is dramatically simpler than gas. No oil changes, no fuel stabilizer, no carburetor cleaning, no spark plug replacement. Annual Worx 40V maintenance realistically consists of: cleaning the deck after each use (30 seconds with a brush and hose), sharpening or replacing the blade once per season, checking wheel bearings annually, and storing batteries properly in winter. The total annual maintenance time is under 2 hours — versus 3–5+ hours for comparable gas mowers.
Noise Level: A Genuine Battery Advantage
At approximately 72 dB measured at operator ear level, the Worx 40V runs at roughly half the acoustic energy of a typical gas mower (which measures 95–100 dB). This isn’t a minor difference — every 10 dB represents a doubling of perceived loudness. A gas mower is approximately 6–8 times louder in perceived terms than the Worx 40V.
The practical implications are real. You can mow at 7 AM on a Saturday without disturbing neighbors. You can hold a conversation while operating. You don’t need hearing protection for occasional use (though it’s still recommended for extended sessions). And your blood pressure stays closer to normal — noise-induced stress from 45 minutes of gas mower operation is a genuine physiological phenomenon.
Noise Comparison
| Mower Type | Measured dB (Operator) | Hearing Protection? | Neighbor-Friendly? |
|---|---|---|---|
| Gas Push Mower | 95–100 dB | Strongly Advised | No |
| Worx 40V (WG779) | ~72 dB | Optional | Yes |
| EGO Power+ 56V | ~70 dB | Optional | Yes |
| Greenworks 40V | ~71 dB | Optional | Yes |
| Robot Mower (avg) | ~58–65 dB | Not Needed | Yes |
Worx 40V vs. The Competition
Context is everything in product reviews. The Worx 40V doesn’t exist in isolation — it competes directly with several strong options at similar price points. Here’s our honest comparison across the key decision factors.
For a broader comparison of the electric mower landscape, our review of electric mowers vs. gas mowers provides the full picture on how battery technology stacks up overall. And if you’re specifically evaluating Greenworks or Ryobi as alternatives, we’ve tested those platforms extensively in our Greenworks mower reviews and Ryobi lawn mower review.
| Brand / Model | Voltage | Deck Width | Runtime | Weight | Price | Best For |
|---|---|---|---|---|---|---|
| Worx WG779 ⭐ | 40V (2×20V) | 14 in | ~47 min | 38 lbs | ~$299 | Small yards, tight spaces |
| EGO LM2102SP | 56V | 21 in | ~60 min | 62 lbs | ~$499 | Up to ¾ acre, premium quality |
| Greenworks 40V | 40V | 17 in | ~45 min | 42 lbs | ~$279 | Similar yard size, steel deck |
| Ryobi 40V HP | 40V | 20 in | ~50 min | 55 lbs | ~$329 | Medium yards, wider coverage |
| Worx WG743 | 40V (2×20V) | 17 in | ~44 min | 41 lbs | ~$249 | Budget option, same battery |
Worx vs. EGO: When to Spend More
EGO’s Power+ platform is the gold standard in battery lawn mowers. The 56V architecture delivers more runtime, more consistent power under heavy loads, and a more durable build. If you have a ½ acre or more, mow in difficult conditions frequently, or simply want the absolute best battery mower available at reasonable cost, EGO is the answer. The $200 price premium over the Worx is genuinely justified by the capability gap on larger properties.
But for small yards (under ¼ acre), the EGO’s advantages are largely academic. The Worx completes the job just as well — and costs significantly less. Spending $499 to mow 2,000 square feet is poor value optimization.
Worx vs. Greenworks 40V
This is the toughest comparison. Greenworks’ 40V mower offers a steel deck and slightly wider 17-inch swath at a similar price point. For buyers who prioritize deck durability, Greenworks is the better choice. For buyers who value the PowerShare battery ecosystem (and already own Worx 20V tools), the lower effective cost of the Worx is compelling. Cut quality is comparable between the two.
Worx vs. Ryobi 40V
Ryobi’s 40V mowers offer wider cutting decks (18–21 inches) in the same price range — better suited for ⅓–½ acre properties where coverage per pass matters. The Worx platform wins on maneuverability and compactness; Ryobi wins on coverage efficiency for medium lots. Battery ecosystem compatibility (Ryobi is part of the massive ONE+ / 40V Ryobi platform) may also be a factor if you’re already invested in Ryobi tools. Our full Ryobi 40V mower review digs deeper into that platform’s specific strengths.
✅ Worx 40V Pros
- PowerShare ecosystem — works with all Worx 20V tools
- Lightest-in-class weight (WG779: 38 lbs)
- Excellent mulching performance
- Compact storage footprint
- Instant, reliable startup every time
- Strong cut quality for price
- 72 dB noise — genuinely quiet operation
- 3-year warranty
❌ Worx 40V Cons
- Plastic deck — less durable than steel alternatives
- Fixed drive speed (no variable on WG779)
- Maximum 3.5″ cut height — short for tall fescue summer
- Runtime limited on ½ acre+ properties
- Wet grass performance below average
- 3-bar battery indicator (prefer percentage)
- Narrower deck = more passes on larger lots
Who Should (and Shouldn’t) Buy the Worx 40V
The best product review tells you clearly who a product is right for — and who it isn’t. The Worx 40V has genuine strengths, but it’s not the answer for every homeowner.
This Mower Is Ideal For:
- Small yard owners (under ¼ acre) who want reliable electric performance at a mid-range price
- Existing Worx PowerShare users who can use batteries they already own
- Homeowners with tight storage space — the fold-flat design is genuinely excellent
- Noise-conscious neighborhoods where early morning or late evening mowing is desired
- First-time mower buyers who want zero-maintenance electric simplicity
- Yards with many obstacles where the compact 14-inch deck’s maneuverability pays dividends
Consider Something Else If:
- Your lot exceeds ½ acre — runtime and coverage width will frustrate you; look at EGO 56V or a 21-inch Ryobi/Greenworks
- You regularly mow wet grass — the Worx struggles here; most battery mowers do, but EGO handles it better
- You need a 4-inch+ cutting height for tall fescue — the 3.5-inch max is a genuine limitation
- Deck longevity is paramount — for a mower you intend to use for 15+ years on rough terrain, invest in a steel-deck option
- You want variable self-propel speed — the fixed-speed drive is limiting on varied terrain; the WG744’s self-propelled system is basic
Ongoing Lawn Care with the Worx 40V
Keeping your Worx 40V cutting at its best requires following seasonal lawn care principles. Knowing the correct cutting height for your grass type is the single most important maintenance practice, regardless of which mower you own. The Worx 40V executes well when the operator is equipped with good cutting knowledge.
Worx 40V Mower: Frequently Asked Questions
How long does the Worx 40V mower battery last per charge?
In our testing, the Worx 40V (using 2×4.0Ah batteries) delivered approximately 47 minutes on short, dry grass on flat terrain — enough to cover roughly 2,800–3,200 square feet. In moderate conditions (3–4 inch grass, mixed terrain), runtime dropped to about 38 minutes. In heavy-load conditions (tall grass, slopes), expect around 24 minutes. Cold weather (below 50°F) reduces runtime by 25–35% compared to warm-temperature operation.
The best solution for larger properties is purchasing a second set of 4.0Ah batteries, which gives you effectively unlimited runtime by swapping and charging in rotation.
Are Worx 40V mower batteries compatible with other Worx tools?
Yes — this is one of the Worx 40V mower’s strongest selling points. The Worx PowerShare platform uses 20V batteries across all their tools. The mower uses two 20V batteries in series to achieve 40V output, but each individual battery is compatible with any Worx 20V tool: string trimmers, leaf blowers, drills, jigsaws, and more. If you already own Worx 20V tools, the batteries you have may work in the mower immediately, reducing the effective purchase cost significantly.
What size yard is the Worx 40V suitable for?
The Worx 40V is best suited for yards up to ¼ acre (approximately 10,890 sq ft) when using the WG779 with a 14-inch deck. The larger 17-inch WG743/744 models can handle up to ⅓ acre comfortably on a single charge. For ½-acre properties, the mower can manage but may require a battery swap mid-session or a brief recharge. For lots over ½ acre, we recommend a platform with higher voltage and a wider cutting deck — EGO 56V or similar.
How does the Worx 40V compare to EGO Power+?
EGO Power+ is the superior mower in nearly every measurable performance category: longer runtime, more consistent power under heavy load, more durable steel/aluminum deck construction, wider deck width, and variable-speed self-propel. However, EGO’s entry point for comparable features is $200–250 higher than the Worx. For small yards (under ¼ acre) in normal conditions, the Worx closes the performance gap considerably — both will mow the lawn cleanly and efficiently. The EGO justifies its premium on larger properties and more demanding use cases.
Can the Worx 40V handle thick or tall grass?
It can, but with limitations. In our testing with 5-inch overgrown grass, the mower completed the task but required slower pacing and showed some power fade in the last section of the battery’s charge. For regularly overgrown situations, we recommend making two passes: the first at maximum cutting height to remove bulk, the second at your normal cutting height for a clean finish. Avoid attempting to cut more than half the blade height in a single pass — this applies to any mower, not just Worx.
Does the Worx 40V mulch grass clippings?
Yes, and it’s one of the mower’s strongest features. The turbine-fan deck design creates excellent airflow for recirculating clippings, and the mulching results in dry, ideal conditions are genuinely excellent — fine particles that decompose quickly and leave no visible residue on the lawn surface. Switch between mulching and bagging by inserting or removing the mulch plug (included). Note that mulching performance drops significantly in wet grass or when cutting more than ⅓ of blade height per pass.
What is the warranty on the Worx 40V mower?
Worx provides a 3-year limited warranty on the mower unit, covering defects in materials and workmanship under normal residential use. The batteries carry a separate 1-year warranty. Worx has a reasonably responsive customer service reputation, and replacement parts are available through their website and Amazon. Register your mower on the Worx website after purchase to activate the warranty — this takes about 2 minutes and is worth doing.
Is the Worx 40V self-propelled?
It depends on the model. The WG779 and WG744 are self-propelled; the WG743 is push-only. The self-propelled models use rear-wheel drive at a fixed speed (no variable adjustment on the WG779). This fixed-speed drive is adequate on flat terrain but can feel slightly rushed on slopes or around obstacles where you’d want to slow down without disengaging drive entirely. The WG744’s self-propel system is somewhat more refined than the WG779’s.
How loud is the Worx 40V mower?
We measured approximately 72 dB at operator ear height during normal operation on dry grass — significantly quieter than any gas mower (typically 95–100 dB). In practice, this means you can hold a normal conversation while the mower is running a few feet away, you don’t need hearing protection for typical mowing sessions, and you can mow early mornings or evenings without disturbing neighbors at typical suburban distances. It’s not silent — you’re still aware of motor noise — but it’s genuinely comfortable to operate.
How do I store the Worx 40V for winter?
Winter storage for the Worx 40V is straightforward compared to gas mowers. After the last mow: clean the deck thoroughly (remove any grass buildup from the underside), remove the batteries, and store the mower folded in a dry location. Store the batteries indoors at approximately 50% charge — not fully charged, not fully depleted. Extreme cold or heat damages lithium battery cells during storage. A basement or climate-controlled garage is ideal. In spring, charge the batteries to full before the first use. That’s it — no fuel draining, no stabilizer, no spark plug inspection.
Final Verdict: Worx 40V Lawn Mower
After extended real-world testing, the Worx 40V earns a solid 7.8 out of 10 — and earns it honestly. This is not a “good for the price” dismissal. The cut quality is genuinely excellent, the ease-of-use and maneuverability are class-leading, and the PowerShare battery ecosystem delivers real, practical value that competing platforms don’t offer at this price point.
The limitations are real: plastic deck, fixed-speed drive on self-propelled models, a 3.5-inch maximum cutting height that doesn’t fully accommodate tall fescue summer recommendations, and runtime that requires planning on anything approaching ½-acre territory. These aren’t dealbreakers — they’re design decisions made to hit a competitive price point, and they’re honest tradeoffs rather than quality failures.
For the target user — a homeowner with a small-to-medium suburban lot who wants reliable, quiet, low-maintenance electric performance without EGO-tier pricing — the Worx 40V is an excellent choice that will perform well for many seasons. If you’re already in the PowerShare ecosystem, it may be the obvious choice. For ½-acre or larger properties, or buyers who want premium durability, step up your budget to EGO or consider the Greenworks steel-deck alternative.
Bottom Line
Buy the WG779 if: you have under ¼ acre with obstacles and tight spaces, and/or you’re in the PowerShare ecosystem. Buy the WG744 if: you have ¼–⅓ acre and want self-propelled convenience at a step-up price. Look elsewhere if: your lot exceeds ½ acre, you frequently mow wet grass, or deck longevity is your top priority.
Explore More Mower Reviews
Not sure the Worx 40V is right for your lawn? We’ve tested the full spectrum — from budget electric to premium gas — so you can find the exact right fit for your property and budget.
