Cobra Lawn Mower Reviews 2021 - Our Thoughts On The Best!

Written By: Steve
Last Updated on February 18, 2021

Cobra Lawn Mower Reviews 2021

The Cobra brand have been providing the UK with high quality outdoor products for many years, from petrol to electric lawn mowers and push to self-propelled, they have variety of different models to suit our needs.

However with so many different Cobra lawnmowers on the market, it can be hard to find the best mowers among the rest, so we've decided to list out the best Cobra lawnmowers below and compared them to help you out.

Our Favourite Cobra Model! - Cobra RM46SPB 

This Cobra RM46SPB model is self-propelled and powered by its high quality 500 series Briggs and Stratton engine which can allow you cut up to 600 square meters with ease. The blade size of this mower is 46 cm making it ideal for medium-sized gardens and has six different cutting heights to choose from starting at 17 mm for a low cut to 75 mm for longer lawns. This can all be set via its single lever.

This high quality design is also equipped with a rear roller so as you can have the ability to give your lawn a striped finish and reach close to borders, along with its strong fabric 55 litre grass bag which can collect clippings as you go.

This model also comes with a two-year warranty like all Cobra mowers.


This Cobra lawnmower is slightly expensive compared to other mowers on our list, but we can see why with its reliable Briggs and Stratton engine and rear roller, allowing you to create stripes effortlessly on even the largest of lawns. Its lower cutting height also enables you to get a close finish.

Downfalls of this mower in particular has to be its smaller grass bag and lack of different cutting heights in comparison with other models. It's also on the expensive side.


  • Self-propelled with Briggs and Stratton engine allows you to mow large areas.
  • Lower cutting height compared to other models.
  • A rear roller is included for stripes and accurate cutting near borders.


  • Small grass bag and lack of cutting heights.

Cobra GTRM40 Electric Lawnmower 

This Cobra electric mower is the only electric powered model on our list and is very affordable in comparison to the petrol mowers. This mower comes with a 1600 watt motor and a 40 cm cutting blade making it perfect for cutting smaller-sized gardens. It also has a seven height cutting adjustment ranging from 20 mm - 75 mm which can be adjusted via its single lever.

This electric lawnmower also comes with a roller for creating desirable stripes on your lawn, along with its four wheels that help balance the machine easily on uneven terrain. There is also an option to mulch and discharge grass clippings, for collecting them there is a 45 litre grass bag which has an indicator to tell you when its full, meaning you can save time having to check your collector.


This electric Cobra lawnmower is very affordable and would be perfect for small-medium sized lawns, its range of cutting heights and large blade width give you versatility when mowing and its roller can be used to create professional stripes, however, this electric mower does lack in power compared to the petrol models above. It would also not be suitable for using on tougher grass.


  • Affordable and electric.
  • Large blade width with variety of cutting heights.
  • Roller included for creating stripes.
  • Four wheels for balance.
  • Rear discharge and mulching options, swell as a 45 litre grass bag.
  • Environmentally friendly.


  • Lacks in power.

Cobra Airmow51B Petrol Hover Lawnmower

This Cobra petrol hover lawnmower is pretty new on the market and is rated highly among other Cobra mowers. Powered by the well-known Briggs and Stratton engine, it gives great torque and lower emissions for a more environment friendly product. The cutting blade of this mower is 51 cm making it an ideal choice for medium-large lawn sizes.

The hover design of this Cobra mower allows you to glide along grass with ease and cut on gradients of up to 45 degrees. Its three in one wheel system means you can either engage its wheels for assistance on uneven terrain, lift them up when not in use or remove them completely.

The drive of this mower is hand propelled and has a two stage height adjustment to fit a variety of different lawns, all these features are followed by a two-year warranty to increase confidence in your purchase.


A well-designed durable hover lawnmower which is versatile to use on all kinds of terrains due to its hover design and wheels, its Briggs and Stratton engine is also extremely reliable and great value for money. Downfalls of this Airmow51B model has to be its difficult assembly and heavy weight which may be something to consider due to its hand propelled system.


  • Briggs and Stratton reliable engine.
  • Large cutting blade can handle larger lawns.
  • Wheel system for better control on uneven terrain.
  • Hover system allows effortless cutting and the ability to mow on slopes of 45 degrees.


  • Difficult assembly.
  • Heavyweight may be tiring due to hand-propelled system.
  • Can be hard to start.

Cobra MX484SPCE Petrol Lawnmower 

The next best Cobra lawnmower on our list is the NX484SPCE petrol model. This lawnmower boasts a powerful Cobra Y173V engine and has an electric start push button for easy use.

The mower has a 48 cm cutting width which is great for small-medium sized gardens and its self-propelled system comes with four different speeds to choose from depending on how fast you want to mow your lawn (2.5 km/h - 3.5 km/h).

One of the best features of this lawnmower is its ability to tackle short or long grass due to its six height adjustments which allows its blades to be adjusted from 25 mm to 75 mm depending on the length of your lawn. A 65 litre grass bag is included for storing your clippings as you mow, this also has indicator to show you when its full.

A two-year warranty is also included with Cobra model for full confidence in your purchase.


This is a very affordable durable mower from Cobra with easy user use thanks to its electric start feature and four different speeds, This model is also great to use on any kind of lawn due to its six height adjustments and self-propelling system which means you can mow larger lawns without getting tired.

Downfalls of this Cobra model has to be its smaller cutting blade and less reliable engine when compared to other models on our list, however it's a great choice for medium-sized lawns and is very affordable.


  • Electric start makes it easy to use.
  • Affordable and comes with four different speeds.
  • Self-propelled system makes it ideal to use for long periods on larger areas.
  • 65 litre grass bag.
  • A variety of cutting height adjustments.


  • Engine is of less quality compared to other mowers.
  • Smaller cutting width.

Cobra M51SPC Petrol Lawn Mower

This Cobra model in particular comes with a DG600 OHV petrol engine. Its 51 cm cutting width allows you to tackle large areas quickly and it has ten different cutting height adjustments ranging from 25 mm -  75 mm which can be adjusted easily by its single lever.

Not only is this model great due to its self-propelled system, it also comes with a 4 in one option for either; mulching, side/rear discharge or collecting your grass clippings, allowing you to fertilise your garden while you mow. For collection this mower has a 60 litre grass box allowing you to empty less often.


This model is a great option if you are looking for a Cobra mower which can mulch grass (improving your lawns health), its also very well-built and has a great range of cutting heights to choose from. Its self-propelled system also helps you to mow larger areas of lawn with ease.

However, this model does lack a quality engine when compared to others, it's lowest cutting height is also not that low meaning you may not get a short cut when compared with other mowers.


  • Large cutting width and self-propelled system can tackle larger lawns easily.
  • Variety of different cutting heights.
  • Mulching and discharge options.
  • 60 litre grass box.


  • The lowest cutting height is not that low.
  • Lack of quality engine.

The Best Cobra Lawnmower - Our Verdict

All these Cobra lawnmowers offer a variety of different features and prices, however for an all round lawnmower, the best model on our list is the Cobra RM46SPB due to its self-propelled system and Briggs and Stratton engine, increasing its overall reliability.

As runner ups we would suggest the electric Cobra GTRM40 model for small lawns and the Cobra Airmow51B petrol hover lawnmower, if you don't mind using a hand-propelled mower. However, all these models are of very high quality and can be used on any kind of lawn easily, these mowers also have a two-year warranty to increase confidence in your Cobra purchase. 

The best Cobra lawnmower for you however depends on your type of lawn and budget, electric models are better for price and smaller gardens, while petrol mowers offer more power and freedom, therefore they are good for larger and longer lawns.

About the author 

Written by Steve
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