Worx Nitro 40V 20" Review

Cordless Lawn Mower with Collapsible Handle and 7-Position Height Adjustment – Includes 2 Batteries & Charger


Final Score

4.3 / 5 from 453 users

Worx Nitro 40V 20" | Tools Official
Worx Nitro 40V 20" | Tools Official
Worx Nitro 40V 20" | Tools Official


See Deal

We earn affiliate commissions at no extra cost to you.

We spent 8.3 hours reading reviews from customers and experts. In summary, here's what users think:

10 reasons to buy

  • The Worx Nitro 40V 20" mower receives praise in multiple reviews for its lightweight design, making it easy to push and maneuver, which is particularly beneficial for users who may have difficulty with heavier equipment. (40 reviews)

    • “The mower is very lightweight.”

    • “It is a very simple build that makes the mower very light.”

    • “This mower is lightweight (about 50 lbs. I think), and easy to push and maneuver.”

    • “It is strong, light, and powerful.”

    • “At only about 50 lbs (35 lbs less than my old gas mower) it is easy to push and not a problem on the hills in my yard.”

    • “it is light weight and easy to maneuver around the yard”

    • “I have RA and even against a self propelled gas mower of a similar cut, they are much easier to use.”

    • “The light weight allows me to control the mower while cutting so not having a power-driven wheel is not a problem.”

    • “This mower is also light enough to easily maneuver despite it being manual driven.”

    • “It's also very lightweight (the actual 'deck' and handles are metal), with much of the other structure being sturdy plastic.”

  • Assembly is described as minimal and straightforward, and the mower is easy to fold up for storage, saving space and time. (29 reviews)

    • “Assembly was easy, if you can even call it assembly. This comes put together in the delivery box. Put away is awesome with this mower. It folds up very easily.”

    • “Set-up was very easy.”

    • “The new mower was easy to get set up and the batteries charged quickly.”

    • “This mower is easy to unbox and assemble.”

    • “Takes up very little space while not in use.”

    • “The handle collapses by turning knobs...”

    • “There is no assembly required and the method for staring the mower is obvious.”

    • “super easy to assemble”

    • “The mower handle folds and allows the mower to be stood up for easy storage.”

    • “Easy to maneuver and store.”

  • The mower operates quietly, reducing noise pollution and making it a more pleasant experience for the user and less disruptive to neighbors. (28 reviews)

    • “It runs quietly with very little vibration.”

    • “The Worx Nitro 40V is super quiet compared to my old gas mower - no ear protection necessary.”

    • “It's super quiet especially compared to gas.”

    • “It's not silent, but it's very very quiet.”

    • “It’s very quiet and efficient.”

    • “The quietness is just so awesome too. You can mow earlier in the day or later in the evening without disturbing your neighbors”

    • “I liked how quiet it was so ordered the Worx.”

    • “1000 times less noisy than gas mowers”

    • “quiet (compared to a gas mower)”

    • “I can’t believe how quiet the mower sounds. Just like a fan.”

  • The electric nature of the mower means there is no need for gas or oil, which simplifies maintenance and eliminates the need to manage engine fluids. (19 reviews)

    • “I didn't like the maintenance with our gas mower so we switched to electric”

    • “There is no oil changing, no gas to fill up, no engine management.”

    • “neither me nor my yard smell like gasoline when I’m done”

    • “No gas, no loud noise, and no fumes!”

    • “there is nowhere to put gas or rope to tug on”

    • “And, without having to deal with some of the typical engine issues (I.e.; oil, filters, spark plugs, etc.), the restarting for the next seasons will be easier for me.”

    • “No gas smell on my hands or clothes!”

    • “I didn't want to mess with gasoline or oil changes anymore”

    • “No hassle. No gas. No gunked up carburetor.”

    • “No having to worry about filling in gas or rip chord starting is as simple as 2 steps”

  • The Worx Nitro 40V 20" mower features an adjustable height setting, allowing users to customize the cutting level to suit the specific needs of their lawn. (15 reviews)

    • “The single lever height adjustment is a nice feature.”

    • “The height adjustment is controlled with one lever.”

    • “This lawn mower has a single-lever adjustable cutting height--the lowest cutting height is lower than the Greenworks, so I raised the Worx to the 2nd-lowest height.”

    • “especially how easy it is to adjust the height with a simple lever.”

    • “I set the mower to its highest setting and managed to get most of it done.”

    • “Especially admire the adjustable clearance selector for deck height”

    • “Like the easy handle to adjust the deck height.”

    • “one lever height adjustment”

    • “easy to change cutting height”

  • The mower's batteries are interchangeable with other WORX tools, providing convenience and extended use for people who own multiple WORX products. (12 reviews)

    • “I also have the WORX WG186 40V Nitro Power Share Cordless Attachment-Capable Driveshare 15" String Trimmer and love how the batteries are interchangeable.”

    • “finished the back by using the set of Worx batteries that came with my older mower.”

    • “Finished with my yard tools 20mha batteries, which seemed to last longer according to battery monitor on mower”

    • “Love this brand and got the edger as well, which uses the same battery.”

    • “I own several Worx power tools and already had three batteries that are the same.”

    • “I've purchased several of their tools since and so glad to have found this 40v push mower on sale with charger and batteries, which may be used with most WORX Tools.”

    • “Almost everything that is battery powered in my garage / workshop runs on Worx batteries.”

    • “The batteries don't take a very long time to recharge and I can use them with my other WORX products.”

    • “Bonus is that the batteries fully recharge in less than 2 hours so you can use the Worx 20V trimmer and blower while the batteries recharge.”

    • “you can swap the batteries around”

    • “use my edger and leaf blower with same batteries”

  • The mower offers mulching as an option, allowing users to fertilize their lawn with grass clippings and reduce waste. (10 reviews)

    • “I use the mulching cover and it works well.”

    • “Three options for cutting: mulching, side discharge, or bagging.”

    • “For mulching, while it cuts the grass very cleanly”

    • “I kept it going almost constantly and in mulch mode.”

    • “I have not tried the bagger yet, just always mulch”

    • “It can mulch, throw grass out one side, or bag the grass with a behind-catch (all included with the mower).”

    • “It can be used with a bag, with a directional chute, or as-is for mulching as you go.”

    • “The mulching feature is great.”

    • “It has a side discharge,a mulch plug, and a catch grass bag.”

    • “I always mulch and never bag clippings”

  • Reviews mention that the mower cuts grass smoothly and evenly, working well even with thick and tall types of grass. (10 reviews)

    • “I think this mower does have a great cut.”

    • “The mower does really well through thick grass as well (mine is field grass, so its tough if it gets thick).”

    • “You can see from the pictures how nice my lawn looks.”

    • “It cuts very evenly and can handle both our thick Zoysia grass and the more traditional Kentucky blue.”

    • “I think it also cuts better.”

    • “this mower has no problem cutting the grass.”

    • “Cuts thick grass.”

    • “First couple of pass worked great I would say close to my gas mower.”

    • “Makes my lawn look like a golf green”

    • “great cutting”

  • The Worx Nitro 40V 20" mower offers not only mulching capabilities but also provides options for side discharge or bagging, giving users flexibility in managing grass clippings to suit their lawn care needs. (9 reviews)

    • “Three options for cutting: mulching, side discharge, or bagging.”

    • “The side chute also works well.”

    • “It bags the cuttings so well I just now used it to pick up the leaves that have covered my lawn!”

    • “I disengaged more frequently and used side discharge mode.”

    • “Comes with the option of picking up the cut grass in the provided bag, push it to the side or to the back.”

    • “It can mulch, throw grass out one side, or bag the grass with a behind-catch (all included with the mower).”

    • “It can be used with a bag, with a directional chute, or as-is for mulching as you go.”

    • “It has a side discharge,a mulch plug, and a catch grass bag.”

    • “Three different ways to manage the grass clippings.”

  • The mower comes with a fast charging station that allows for quick recharging of batteries, reducing downtime between mowing sessions. (7 reviews)

    • “The new mower was easy to get set up and the batteries charged quickly.”

    • “it comes with a lightning fast charging station”

    • “Batteries seem to charge pretty quick”

    • “The fast chargers works great.”

    • “The batteries charge quickly, and I didn't mind taking a break during an 88 degree day.”

    • “Bonus is that the batteries fully recharge in less than 2 hours”

    • “comes with dual battery quick charger”

3 reasons not to buy

  • Several reviews of the Worx Nitro 40V 20" lawn mower point out that the batteries might not last long enough to finish mowing larger yards in one go. The battery life of the Worx Nitro 40V 20" tends to drop even more when cutting through thick grass, which might mean you need to purchase extra batteries to ensure uninterrupted mowing. (27 reviews)

    • “The battery does drain much faster if you have to mow lots of thick grass though, so be aware of that. I had to buy an additional set of batteries to make sure I can mow my whole yard all in one go.”

    • “You need another two batteries to do a front and back yard of average size properly.”

    • “The 20v 4.0Ah batteries only did about 1/2 before they died.”

    • “First is the battery life. I have 1/4 acre and only got a little more than 1/3 of it done before the batteries died.”

    • “However, this lawn mower will not do the whole lawn in a single pass. In fact, if the grass is longer than usual due to not being able to get to it, I am looking at three passes with charging in-between to get the job done, and this is with brand new batteries.”

    • “After 6 months, the battery life is about 20 minutes.”

  • Users report that the electric mower has less power compared to gas mowers, which means that users need to keep up with their lawn more regularly to prevent the grass from becoming too thick for the mower to handle efficiently. (18 reviews)

    • “I was expecting to have significantly less power than a gas mower, and it does have less, but MAN does it get the job done. If a gas mower sits at 100% power, I would say this mower gives about 75% - 80%. What it translates to, is I just have to keep up with my lawn better and not let it get too thick, which I should do anyways.”

    • “If the grass has grown to a higher length, this thing will stop every few steps had it tried to cut the grass.”

    • “the horsepower was missing as the mower could not cut through the grass”

    • “This one does not have enough power to mow a really thick lawn”

    • “When grass is too high you need to set the mower higher or tilt upward on high patches.”

    • “If you try to walk faster, the cycle speed of the blades being lower, you’ll wind up with 'muppet grass' because you weren’t in that place quite long enough for the slower fan speed to cut all of the blades.”

    • “I can tell that the Worx lawn mower doesn't have the raw power of a 12 amp corded lawn mower”

    • “Does not handle anything very tall very well”

    • “The battery life can mow the entire yard as long as the grass isn't too tall--you definitely cannot go more than a week between mows.”

  • There are concerns about the durability of some plastic components on the mower. One user replaced the large plastic wing-nuts with metal bolts and nuts due to the design causing them to stick out and catch on obstacles. (9 reviews)

    • “I also have concerns about some of the plastic parts. Not sure how they’ll hold up over time.”

    • “Also the wheels are cheap and I work that will crack if it hits a curb or the side of the house as it brushes up against while mowing.”

    • “The side shoot came off 3 times during one mowing...needs a better connector.”

    • “I’ve only had it a few months, so it remains to be seen whether the material choices affect durability.”

    • “The metal deck is great compared to others with plastic but cheap plastic parts ruin it, especially the key.”

    • “It’s not built for rugged use.”

    • “with much of the other structure being sturdy plastic”

    • “Doesn't FEEL very sturdy, but I'm very happy with it.”

    • “Blade is chinesium.”

Bottom Line

The Worx Nitro 40V 20" mower is a hit for its light build, making it easy to push. Simple to put together and store, it's also quiet and gas-free, keeping maintenance easy. You can adjust the height for a custom cut and use the same batteries in other WORX tools. It mulches, bags, or side-discharges and recharges fast. However, battery life may falter in big yards or with thick grass, and it's less powerful than gas mowers. Some parts may be less durable, too.


Cutting Width (in)20 inch
FeaturesElectric Start, Mulching, Bagging, Side Discharge
Max Cutting Height4.25"
Min Cutting Height1.5"
Power SourceBattery
CategoryPush Mowers
Warranty5 Year Limited
Weight62.4 lbs.

Video Reviews

Special Features

  • Eco-Friendly Power: This mower is battery-powered, which means no gas smell, less noise, and no oil changes.
  • Power Share Compatibility: The batteries from this mower can be used on a bunch of other Worx tools, so you don't need a different battery for each tool.
  • Versatile Cutting Options: You can choose to collect the grass in a bag, chop it up finely to leave on the lawn, or shoot it out the side.
  • Durable Batteries: The batteries that come with it are tough and built to not overheat, which means they keep the mower running longer.
  • Height Adjustment Ease: There's one lever that changes the cutting height, so you can easily make the grass as short or as long as you like.
  • Space-Efficient Storage: The handle folds down so it doesn't take up a lot of room in your shed or garage.
  • Battery Life Visibility: There's a gauge that shows how much battery is left, so you won't be left guessing.
  • Quiet Operation: It's a lot quieter than a gas mower, so you can mow early or late without bothering the neighbors.
  • Lightweight Design: It's not heavy, so it's easy to push around and won't tire you out.


  • Q:

    Is it possible to adjust the rotational speed of the mower to prevent damage to certain plants?

  • A:

    The mower's rotational speed cannot be adjusted; however, it operates at a relatively low speed.

  • Q:

    Where can one locate the serial number on the model?

  • A:

    The current model does not feature a serial number flap.

  • Q:

    What is the range of cutting heights available with this mower?

  • A:

    The mower features six adjustable cutting levels, capable of achieving very low cuts.

  • Q:

    Is it advisable to store this mower on a screened porch?

  • A:

    Storing the mower in a covered area is possible, but it is recommended to remove the battery and store it indoors if exposed to extreme temperatures.

  • Q:

    How effective is the mower's mulching capability?

  • A:

    Based on user experience, the mower is reported to mulch effectively and has received positive feedback.

Similar Products