Cobra MX4140V Review

Cobra MX4140V Review
Cobra MX4140V
Performance/Cut Quality
87
Features
91
Durability
92
Value
84
Warranty/Support
84
What I Like
Powerful motor and battery interchangeable with other Cobra garden tools.
Very good run time (30-40 min) with a powerful 4.0Ah lithium-ion battery.
Steel deck material.
Centralised deck-height lever.
Battery level indicator on the battery and the mower.
What I Don't Like
No rear roller for striped lawn appearance.
Extra batteries can be expensive for this model.
Lowest cutting height is 25mm – some require a lower 20mm.
88
My Overall Rating

Cobra MX4140V Cordless Mower Review

Summary

The Cobra MX4140V is a cordless battery lawn mower that has a 41cm cutting deck and comes supplied with a large 40V 4.0Ah battery that will give you around a 30-40 minute run time. The mower comes provided with a large 50 litre grass collection box and a wide range of cutting heights (7 stages, 25mm to 75mm), weighs 19.3kg and is provided with a Cobra 2 year warranty.

Having had great reports about this and other cordless mowers from Cobra, I was pleased to get hold of this Cobra MX4140V and see for myself just how good these mowers are or was it all hype?

Cordless mowers are becoming more and more popular, but one of the things that I have noticed on a lot of models is that there aren’t always as many features as other types of mowers. Of course, this isn’t across the board and there are some cordless mowers out there that are incredibly powerful and have a load of features to boot. This Cobra MX4140V is a fine example of this, but does it live up to its reputation for not only power and features, but also build quality, performance and ease of use?

With a 41cm cutting deck, this lawn mower is suitable for medium to large sized lawns, but that certainly doesn’t mean that it isn’t super practical to be used even on smaller lawns. I managed to cut my 500m² lawn in difficult conditions (see video review below), on a single charge from the 4.0 volt 4.0AH battery. It comes with a handy mulching plug, seven cutting heights and a long lasting battery, so you’ve got a lot of options in terms of how you mow. Moreover, this machine has been designed with user comfort in mind and is bursting with useful features like the ergonomic handle, steel deck and full flap on the grass box, which makes your life that little bit easier.

For anyone who wants a lightweight and no-nonsense mower that still offers an excellent choice of functions, I’d highly recommend this one is on your shortlist. In my Cobra MX4140V review and video, I’ll be taking you through the finer details of this nifty piece of garden equipment so you can see for yourself if this mower is right for you and your lawn.

Main Features

  • For Lawns of up to 400m²
  • Blade Length: 41 cm (16-inch)
  • Weight: 19.3 Kg (without battery)
  • Number of Cutting Heights: 7 (25mm to 75mm)
  • Mulching Plug Provided
  • Grass Box Capacity: 50 L
  • Battery: 4.0 Ah 40-Volt Lithium-Ion
  • Metal Deck
  • Larger rear wheels
  • Deck Noise: 90 Decibels (79.9 dB at the operator level)
  • Handle: Double Folding with Foam Grip
  • Handle Incorporates a Battery Power Indicator

Power System & Batteries

Cobra MX4140V Power and Batteries

A lot of people are put off cordless mowers in the belief that they will run out of time long before the lawn is mowed. Thankfully, that won’t ever be the case with this Cobra MX4140V since it comes with a powerful 4.0Ah 40v Samsung battery that will give you as long as 30-40 minutes of cutting time per charge. And even in the worst case scenario when you do happen to run out of power, you’ll only need to wait 90 minutes for it to fully recharge. A fast charger is available from Cobra that will reduce the charge time down significantly if you simply can’t wait the 90 minutes to fully charge the battery.

Moreover, the power system benefits from a battery indicator that displays a series of 5 lights making it much more accurate compared to some other models that only have a three-light system. What’s really practical about this mower is that there is no need to stop the mower to check the remaining charge, since the indicator is conveniently located on the handle.

The battery is loaded into the front of the mower and is quick and simple to put in and take out. If you have any other 40v Cobra tools, you’ll also be pleased to know that the battery can be shared between tools for your convenience.

My test was carried out towards the end of November, so the conditions were no ideal. The grass was particularly wet down the shady side of the lawn and I anticipated issues as the grass was also quite long. To say I was pleasantly surprised with the performance of this Cobra MX4140V is an understatement. I could hear the power stepping up as the going got tough and this Cobra mower had no problems cutting the long wet lawn. Take a look at my video review below to the just how well this mower steps up the power when the lawn conditions get more demanding.


Cobra MX4140V Video Review

To give you a visual representation of the Cobra MX4140V please watch my Cobra MX4140V video review below:

 


Features In Detail

Deck and Blade

Cobra MX4140V Deck and Blade

The Cobra MX4140V benefits from a steel deck. This material is ideal for outdoor tools like this as it is incredibly resilient and won’t rust or corrode easily. What’s more, it’s fantastically lightweight and durable, so even if your garden is a little more rugged, you won’t need to worry about the deck cracking as you might do with a plastic one. This mower almost had a petrol mower feel to it in terms of power, build quality, design and performance.

Cobra use a 41cm lifting, pressed steel blade suitable for mulching. The cuts are clean and lift the grass in and into the grass box. And because of the superb cutting performance, the clippings are small and compacted into the grass box to make the most of the space available.

Having this type of blade makes these mowers ideal for collecting leaves on the lawn, and again this Cobra did not disappoint (see video review to see this in action).

Replacement blades are readily available and cost around £15.00.

Click for Best Price

 


Height Adjustment

Cobra MX4140V Height Adjustment

This Cobra MX4140V comes with a choice of seven cutting heights which, for a mower of this size, is remarkably generous. What’s even more impressive is how easy they are to shift through. This lawn mower benefits from a central cutting height lever that is smooth and simple to operate.

The cutting heights range between 25mm and 75mm, which is versatile enough for most lawn needs. However, I will point out that some people prefer the lowest option available, to go down to 20mm, so if this sounds like you, you might find that 25mm is not suitable.


Cutting Diameter

This lawn mower is designed with the medium to large sized lawn in mind. It boasts a 41cm metal cutting deck. However, if you have a very small garden, this is likely to be too cumbersome for your needs, but the good news is that Cobra also offers a smaller brother to this model, the Cobra MX3440v which features a 34cm cutting deck made from polymer. This won’t have the same level of durability, but for basic mowing needs, it’ll serve you well. It is also worth keeping in mind that this smaller model doesn’t come with a mulching plug, so if that’s a deal breaker for you, you may want to stay with the Cobra MX4140V.

This mower was perfectly adequate for my 500m² lawn, however, if  your lawn is any larger, you may want to consider the Cobra MX460S40V with its larger 46cm (18″) deck and has the added benefit of being self-propelled.


Handles

Cobra MX4140V Handles

I talk a lot about the importance of a good mower handle and the Cobra MX4140V certainly has a lot to offer in this respect. For starters, you will notice that the handle is ergonomically designed making it far more comfortable to use. It features four starter buttons located at different parts of the handle, meaning that you can start the mower no matter how you want to grab onto it. That said, you don’t need to worry that all four buttons need to be pressed at once, they each work independently.

What’s more, the handle provides you with incredibly easy manoeuvrability. Making left and right turns feels effortless, so if you’ve struggled with your lawn mower in the past, that isn’t going to be a problem now.

The handles fold down at the mid-point using the quick release levers, however, if you want to fold down at the lower deck point, then you will need to remove the nut and bolt. Again see my video review of the Cobra MX4140V for more information.


Cobra Cordless Lawn Mower Comparison

Cobra MX3440V
Cobra MX3440V 40v Lithium-ion Cordless Hand Propelled Lawnmower
Cobra MX4140V
MX4140V 41cm (16in) Cordless Lawnmower including 40v 4Ah Battery and...
Cobra MX460S40V
Cobra MX46S40V 46cm (18in) Cordless Battery Lawnmower, self propelled...
Cobra RM4140V
Cobra RM4140V 41cm (16in) Cordless Battery Lawnmower with Rear Roller...
Lawn Coverage
300m²
400m²
400m²
300m²
Battery
1 x 4.0Ah 40 Volt
1 x 4.0Ah 40 Volt
2 x 4.0Ah 40 Volt
1 x 4.0Ah 40 Volt
Battery Charge Time
90 Minutes
90 Minutes
90 Minutes
90 Minutes
Mowing Time
30 Minutes
30 Minutes
50 Minutes
30 Minutes
Cutting Width
34 cm
42 cm
46 cm
41 cm
Deck Material
Polymer Deck
Metal Deck
Metal Deck
Metal Deck
Weight
17 kg
19 kg
24 kg
21.64 kg
Grass Box Capacity
35 L - Hybrid Collection Box
50 L - Hybrid Collection Box
60 L - Hybrid Collection Box
50 L
Cutting Heights
5 (25mm – 75mm)
7 (25mm – 75mm)
7 (25 - 75mm)
7 (20 - 75mm)
Larger Rear Wheels
Foldable handlebar
Battery Gauge On Bars
Mulching Plug Supplied
Rear Roller
Price
Price not available
£324.99
Price not available
Price not available
Full Review
-
-
Cobra MX3440V
Cobra MX3440V 40v Lithium-ion Cordless Hand Propelled Lawnmower
Lawn Coverage
300m²
Battery
1 x 4.0Ah 40 Volt
Battery Charge Time
90 Minutes
Mowing Time
30 Minutes
Cutting Width
34 cm
Deck Material
Polymer Deck
Weight
17 kg
Grass Box Capacity
35 L - Hybrid Collection Box
Cutting Heights
5 (25mm – 75mm)
Larger Rear Wheels
Foldable handlebar
Battery Gauge On Bars
Mulching Plug Supplied
Rear Roller
Price
Price not available
More Information
Full Review
Cobra MX4140V
MX4140V 41cm (16in) Cordless Lawnmower including 40v 4Ah Battery and...
Lawn Coverage
400m²
Battery
1 x 4.0Ah 40 Volt
Battery Charge Time
90 Minutes
Mowing Time
30 Minutes
Cutting Width
42 cm
Deck Material
Metal Deck
Weight
19 kg
Grass Box Capacity
50 L - Hybrid Collection Box
Cutting Heights
7 (25mm – 75mm)
Larger Rear Wheels
Foldable handlebar
Battery Gauge On Bars
Mulching Plug Supplied
Rear Roller
Price
£324.99
More Information
Full Review
Cobra MX460S40V
Cobra MX46S40V 46cm (18in) Cordless Battery Lawnmower, self propelled...
Lawn Coverage
400m²
Battery
2 x 4.0Ah 40 Volt
Battery Charge Time
90 Minutes
Mowing Time
50 Minutes
Cutting Width
46 cm
Deck Material
Metal Deck
Weight
24 kg
Grass Box Capacity
60 L - Hybrid Collection Box
Cutting Heights
7 (25 - 75mm)
Larger Rear Wheels
Foldable handlebar
Battery Gauge On Bars
Mulching Plug Supplied
Rear Roller
Price
Price not available
More Information
Full Review
-
Cobra RM4140V
Cobra RM4140V 41cm (16in) Cordless Battery Lawnmower with Rear Roller...
Lawn Coverage
300m²
Battery
1 x 4.0Ah 40 Volt
Battery Charge Time
90 Minutes
Mowing Time
30 Minutes
Cutting Width
41 cm
Deck Material
Metal Deck
Weight
21.64 kg
Grass Box Capacity
50 L
Cutting Heights
7 (20 - 75mm)
Larger Rear Wheels
Foldable handlebar
Battery Gauge On Bars
Mulching Plug Supplied
Rear Roller
Price
Price not available
More Information
Full Review
-

Last update on 2024-03-03 / Affiliate links / Images from Amazon Product Advertising API


Roller (Stripes)

Cobra has not added a roller nor a striper to this model. It is not common to see this type of addition on a mulching cordless mower as they are not compatible. If you want to see stripes on your lawn, you are better off getting a push-roller from a third-party manufacturer or see my list of best cordless mowers with a rear roller.

I have done a full review of the Cobra RM43SP80V, this mower has a dedicated rear roller so we will be looking at how well this stripes the lawn.

Last update on 2024-03-04 / Affiliate links / Images from Amazon Product Advertising API


Mulching

Cobra MX4140V Height Adjustment

If you don’t want to use the traditional cut and collect option, this Cobra MX4140V comes with a mulching plug. This allows you to remove the grass box and rather than the clippings being collected, they are circulated around the deck and delivered back to the lawn as a fine material which works as a natural fertiliser. No doubt you will know that there are many health benefits and advantages to mulching your lawn.

Just remember that the mulch plug is inserted in the mower when it arrives, so just remove it if you want to cut and collect the cuttings.

Click for Best Price

 


Grass Collection Box

This Cobra MX4140V comes with a huge 50-litre grass box which is seriously impressive when you think about the size of the mower. Of course, in any case, it is going to fill up but with the handy full flap indicator, you won’t need to constantly stop and check. When the flap sits down, it’s time to empty.

This hybrid grass box is beautifully strong and durable yet offers excellent circulation, so you really are getting the best of everything.


Performance

Cobra MX4140V Should You Buy

I really like how lightweight the Cobra MX4140V is and this means that it is beautifully easy to move around. It is a push mower, but you won’t feel as though you are exerting any effort and the way that it is designed means that manoeuvring it is a breeze; but I will talk more on that later.

One of the other things that makes the Cobra MX4140V cordless lawn mower stand out from the crowd is the excellent cut quality you get. Thanks to an auto adjusting blade you never need to worry about losing power over more stubborn terrain. Should the grass become more difficult to cut, the power is automatically increased meaning you always get an even cut and helps to increase the battery run time.

The cut is clean and precise from the quality blade, and the mulching function works as expected.

In terms of performance this Cobra MX4140V really gave me a lot of confidence, and when I compare to all the other similar sized cordless mowers I have tested, this Cobra comes out on top (who needs petrol!).


Practicalities

  • A large lithium-ion battery, which gives the mower a good run time, yet it is still quick to recharge.
  • You can see the battery level on the battery itself or on the handlebar control panel.
  • Option to mulch the grass cuttings with the supplied mulching plug.
  • The steel deck provides durability and improved cutting and collection performance.
  • The handlebar is adjustable with quick-latch fasteners and folds down for compact storage.
  • There are 4 starter buttons on the handlebar, so it is comfortable for both left and right-handed users.
  • A half-mesh grass collection bag that folds flat for ease of storage.

Safety Features

Cobra MX4140V Safety Features

If you have children, the last thing you want is little hands getting hold of the lawn mower and starting it up. It doesn’t bear thinking about what could happen. Fortunately, this Cobra MX4140V comes with a safety key which must be inserted into the battery compartment and switched into the on position before the mower will turn on.

Please not that only one safety key is supplied, so keep it safe when you remove it.

Click for Best Price

 


Cobra MX4140V Cordless Lawn Mower User Manual

You can download the Cobra MX4140V Cordless Lawn Mower user manual guide here.


What’s Included in the Box

  • 1 x Cobra MX4140V
  • Mulching plug
  • Battery charger
  • 1 x 40v 4.0Ah battery
  • 50 L grass box
  • User guide

Pros and Cons

Pros
  • Powerful motor and battery interchangeable with other Cobra garden tools.
  • Very good run time (30-40 min) with a powerful 4.0Ah lithium-ion battery.
  • Steel deck material.
  • 2-in-1 cutting features – cut & collect and mulching.
  • Ergonomic handles for easy manoeuvrability and good posture whilst mowing.
  • Easy to fold up and store.
  • Fast charger with a fan to prevent the battery from overheating.
  • Centralised deck-height lever.
  • Safe start-key ignition.
  • Battery level indicator on the battery and the mower’s handles.
  • Easy storage grass box complete with full flap indicator.
  • Larger rear wheels.
  • 2 Year Warranty.
Cons
  • No rear roller for striped lawn appearance.
  • Extra batteries can be expensive for this model.
  • Lowest cutting height is 25mm – some require a lower 20mm.

 


Should You Buy the Cobra MX4140V?

Cobra MX4140V Performance

This Cobra MX4140V would make an excellent addition to the tool shed of any homeowner who is looking for something easy to use and reliable. Thanks to the various mowing features, it gives you a degree of versatility without being overly complicated and this would work great for people who are just getting to grips with a cordless lawn mower or those looking for simplicity and features.

I would also highly recommend this Cobra MX4140V to anyone who has a slightly more rugged garden. Since it is so easy to move around, thanks to the ergonomic handles and larger rear wheels. It offers increased power when the ground gets a little tougher to mow, so would work excellently in this type of garden.

To give you some guidance on which type of customer would suit this model best, below I’ve listed the categories they would fall under:

  • People with gardens up to 450m² in size.
  • People who want a good range of 7 cutting heights that range from 25mm to 75mm.
  • Those that want the ability to extend the run time by purchasing additional batteries.
  • People looking to replace their petrol mower with a cordless battery mower.
  • Those that may have other Cobra cordless tools as batteries are interchangeable.
  • Those that like to have the option to mulch the grass cuttings.
  • Those that want a 41cm cutting width cordless mower that is lightweight and easy to manoeuvre around the garden.
  • People who do NOT want striped lawn appearance.
  • Those who like the convenience of having no power cord or have limited or no access to a power source in the garden.

 


Conclusion

I have really enjoyed testing and using this Cobra MX4140V and have found it to be efficient, reliable, versatile and easy to use. It certainly isn’t lacking when it comes to providing a precise and efficient performance. Combined with the 2-in-1 cutting options, this is a tool that comes with many advantages and is suitable for medium to larger sized lawns. What’s more, with that generous 2-year warranty, you needn’t have to worry about forking out for some time to come!

Don’t forget that Cobra also have the smaller MX3140V model, with its smaller 34cm deck. This would be better suited for those with smaller lawns under 250m².

Take a look at my video review above to see this mower in action as well as unboxing, assembly, full specification, cut to edge and comparison with other mowers such as the Murray, Hyundai and LawnMaster mowers.

I just hope you can get your hands on one, they are so popular that stock sells out fast, good luck!


Where Should I Purchase This Model

Click for Best Price

 

MX4140V 41cm (16in) Cordless Lawnmower including 40v 4Ah Battery and...
  • 41cm (16in) Cordless Lawnmower with 40v 4Ah battery and charger included
  • Single height of cut adjustment with 7 stages - 25mm to 75mm
  • Mulch or collect option as standard. 50 litre fabric grass bag with full indicator
  • Handle incorporates a battery power indicator
  • 2 Year warranty (domestic)

Last update on 2024-03-04 / Affiliate links / Images from Amazon Product Advertising API


Not sure about this mower? Click here to see more Cordless Lawn Mower Reviews.


Cobra MX4140V FAQs

Does the Cobra MX4140V have a rear roller?

No.

Is the Cobra MX4140V self propelled?

No, this is a push mower.

How long does it take to charge the battery?

90 mins.

Does the Cobra MX4140V have a steel deck?

Yes.

Is there an indicator on the grass box that tells you when it's full?

Yes, it has a grass bag full indicator.

Lawnmower Product Expert, Reviewer and Author at EasyLawnMowing.co.uk | 01284 615144 | info@easylawnmowing.co.uk | Website | + posts

As a seasoned expert in the field of garden power tools, I have dedicated over a decade to working with and reviewing a wide variety of lawn mowers. My extensive experience has allowed me to gain a deep understanding of the benefits and limitations of different types of mowers and garden tools.

Over the years, I have honed my skills in writing informative articles and creating helpful videos for various blogs and publications. This has given me the ability to not only recognise what makes a good lawn mower, but also to help you choose the perfect garden tool for your specific needs and requirements.

With my wealth of knowledge and expertise, I am confident that I can provide you with valuable insights and recommendations when it comes to selecting the right lawn mower for your lawn. So, whether you're looking for a battery cordless, electric, petrol, or robotic mower, you can trust in my expertise to guide you towards the best option for your garden.

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