Best 21-Inch Self-Propelled Lawnmower of 2020 — Complete Reviews with Comparisons

Mowing your lawn can be hard work, especially when there are hills involved, but this does not mean that you have to break your back. There are self-propelled lawnmowers out there, and you just have to find the right one. Today we are here to help you find the best 21-inch self-propelled lawnmower on the market, so let’s get to it!

Our Best Product Reviews and Comparisons

1. GreenWorks MO40L2512 Electric Lawn Mower

Here we have a nice electric lawnmower, a 21-inch model, which comes with dual batteries, enough cutting power for simple lawnmowing jobs, and it comes at quite a reasonable price.

Review

For one, the GreenWorks MO40L2512 Electric Lawn Mower operates using battery power, which is a good thing because gasoline lawnmowers are exceedingly loud and they pollute the air as well, so it’s a more environment-friendly option. There’s also the fact that this particular lawnmower comes with 2 batteries included.

This means that while one of them is charging, the other one can be in use, and moreover, this lawnmower comes with a battery storage compartment, so if one happens to run out, the other one can be quickly put in its place. With that being said, a single charge of one battery lasts for about 45 to 50 minutes, which, quite honestly, is not all that impressive.

Keep in mind that the GreenWorks MO40L2512 Electric Lawn Mower has a 21-inch deck, which makes it ideal for side discharging, mulching, or bagging grass clippings, and yes, the grass clipping bag comes included with the lawnmower. This lawnmower also comes with wheels that are ideal for achieving a good amount of traction on both wet and dry grass. When all things are considered, the GreenWorks MO40L2512 Electric Lawn Mower is actually quite lightweight and maneuverable.

This is a self-propelled lawnmower, so you really do not have to push it at all, which definitely helps make life a lot easier. What also helps is that the GreenWorks MO40L2512 Electric Lawn Mower comes with so-called smart cut technology, which means that when the mower encounters dense and hard-to-cut grass, it automatically increases cutting power to get the job done.

Yet another feature that is that the GreenWorks MO40L2512 Electric Lawn Mower comes with an easy one-start push button, so you can get started and finish faster.

PROS

  • 2 batteries included
  • Easy to start
  • Self-propelling
  • Smart cut tech

CONS

  • Limited battery life

2. Troy-Bilt 12AGA2M6766 21″ Self-Propelled Mower

Here we have another fairly affordable self-propelled lawnmower, one which is also more than ideal for home use, and this time it is a gas engine we are talking about, so it can cut larger areas of grass in less time.

Review

The Troy-Bilt 12AGA2M6766 21″ Self-Propelled Mower is a 159 cc gas-powered lawnmower, so it has more than enough power to deal with even the densest of grass, and it should even be able to handle wet grass too. The fact that it is gas-powered means that you never have to worry about battery life, it has a lot of power, and you can keep mowing for hours without having to refuel it. No, it might not be the best option in terms of the air pollution it generates, as well as the noise it makes, but this is a trade-off that you have to keep in mind.

Moreover, not only is the Troy-Bilt 12AGA2M6766 21″ Self-Propelled Mower self-propelled, but it has 4 different speed settings, which is nice because you can make it move as fast as you want to suit your pace. One thing we want to note is that even though this is a gas-powered lawnmower, it does not use a pull cord to start like so many others.

This thing uses a simple electric start button to turn on, which is much faster and easier than using a pull cord. The Troy-Bilt 12AGA2M6766 21″ Self-Propelled Mower comes with 6 unique cutting height settings ranging from 1.23 to 3.75 inches, so you can cut the grass down as far as you need.

Something else which you might like is that it comes with a grass clippings collection bag, so you can easily mulch or dispose of it, or you can just use the side ejection method as well, to disperse the clippings right back onto your lawn for some extra nutrients and fertilization.

PROS

  • Lots of power
  • 6 height settings
  • 4 self-propulsion speed settings
  • Easy electric start

CONS

  • Quite heavy
  • Fairly noisy
  • Creates a lot of emissions

3. Snapper XD 82V MAX Electric Lawnmower

Here we have an electric lawnmower that comes at a fairly high price, but it is a durable lawnmower, and it also has a lot of beneficial features that you might appreciate.

Review

Alright, so first of all, the Snapper XD 82V MAX Electric Lawnmower is a self-propelled lawnmower, which means that it pushes itself along so you don’t have to, and yes, it also comes with a few speeds you can choose from, just so the speed of the mower can match your own walking pace for your comfort.

Something else which also stands out about the Snapper XD 82V MAX Electric Lawnmower is that it comes with efficient load sensing tech. This means that the mower can tell if it needs more or less power, and it will adjust the power being delivered to the blades based on the power needs. This helps get through tough spots with ease and it also helps to save energy whenever possible.

The Snapper XD 82V MAX Electric Lawnmower comes with 2 batteries, which is nice because while one is in use, the other one is ready to go or in the middle of charging. It definitely helps save time, but be aware that each battery can only go for 40 or 45 minutes at most, which is not great. However, there is a rapid charger included, so the batteries take next to no time to achieve a full charge.

What you might like about the Snapper XD 82V MAX Electric Lawnmower is that it comes with a 3-in-1 cutting design, so you can have the grass clippings eject from the side, stored in the collection bag, or mulched right away. This particular option also comes with a cutting height adjustment feature with 7 different cutting heights to choose from.

PROS

  • Not much noise
  • No emissions
  • Adjusts power based on needs
  • 2 batteries included

CONS

  • Not the best battery life
  • Fairly expensive

Final Verdict

When it comes down to it, if you need something that has a lot of power, the Troy-Bilt 12AGA2M6766 21″ Self-Propelled Mower is what we would recommend. However, if you are more concerned about the environment, you probably want to go with one of the battery-powered models here, with the Snapper XD 82V MAX Electric Lawnmower being the better of the two, but also significantly more expensive.

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