Bosch AdvancedRotak 650


Performance/Cut Quality











  • ProSilence, ErgoSlide, LeafCollect, ErgoFlex
  • Powerful motor
  • Large grass box
  • Silent operation
  • Integrated Height Adjustment


  • 10 metre cord a little short

Bosch AdvancedRotak 650 Review- Electric Rotary Lawnmower.

Bosch AdvancedRotak 750 Guide


The Bosch AdvancedRotak 650 has a powerful 1700W motor and has a 41 cm cutting width using a hardened steel blade designed for medium to large sized lawns. The smooth sound profile of the Bosch ProSilence prevents your lawnmower from disturbing your neighbours by reducing its noise level by up to 75% to 89 dB.

The Bosch AdvancedRotak 650 is the smaller brother to the Bosch AdvancedRotak 750, what’s the difference between them? Well not much really apart from the slightly larger deck size on the 750. The AdvancedRotak 750 has a 45 cm deck and the AdvancedRotak 650 has a 41 cm deck size. Apart from that the two mowers have exactly the same features, even the grass box is the same with a 50 litre capacity.

The Bosch brand is well known and they have an excellent reputation for reliable affordable products. The Bosch AdvancedRotak 650 is a powerful machine that can handle larger lawns whilst still remaining agile and easy to move. The strong 1700 watt motor will tackle any lawn with ease and the 41 cm blade will make quick work of your lawn.

One of the main features of this Bosch AdvancedRotak 650 mower is what Bosch call ProSilence. The point is that they are very quiet mowers. You have a wide range of 7 cutting height options from 20 mm to 80 mm. Changing the height is quick and easy. The large 50-litre grass box means fewer trips to empty the grass making your work even faster and more efficient. It is collapsible for convenience and easy storage.

Another feature is the ErgoSlide System. This feature makes the lawn mower easier and more comfortable to move around. The ergonomic handles will also add to the ease of use.

The Bosch AdvancedRotak 650 model also has grass combs for great edges and corners as well as LeafCollect to gather leaves as you work on the lawn.

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Bosch AdvancedRotak 650 Main Features:

  • Rating: 9.6/10
  • For lawns of up to 650 m²
  • Blade length: 41 cm
  • Weight: 16 Kg
  • Number of Cutting Height: 7 (20mm – 80mm)
  • Grass box capacity: 50 L
  • 1700w Power
  • Cable length: 10m

To get a visual representation of this mower, please see my video review of the Bosch AdvancedRotak 650.

Key features:

  • ProSilence for quiet operation
  • Integrated Height Adjustment
  • ErgoSlide for ease of movement
  • ErgoFlex Ergonomic Handles
  • Grass comb
  • LeafCollect

Difference between the Bosch AdvancedRotak 650 and Bosch AdvancedRotak 750

Many have asked, what’s the difference between the AdvancedRotak 650 and the 750? Well it is very simple, nothing is different apart from the size of the deck/blade. The 650 has a 41 cm deck and the 750 has a deck size of 45 cm, that’s it! The motor is the same power at 1700w and even the grass box has the same capacity at 50 litres.

Which one is best for you depends on the size of your lawn, with the 650 designed for lawns up to 650 m² in size and the 750 is for lawns up to 750 m².

Power System

The Bosch AdvancedRotak 650 features a 1700 watt powerful motor designed to cut larger and more demanding lawns whilst still providing a professional cut. This is assisted by the large amount of cutting heights that I will cover that later in this review.

This is a decent sized motor able to cut lawns that tend to be left longer between cuts and that have grown thicker and longer. The AdvancedRotak 650 made light work of my lawn when it was tested for the first cut in April 2019.

The other great feature of this mower is the ProSilence that reduces the noise level of this motor by up to 75%. I was sceptical at first but was pleasantly surprised at the low noise level of what is a very powerful motor.

The video below from Bosch shows the ProSilence in action. It shows the AdvancedRotak with ProSilence at different distances and compares it to a mower (Rotak 43) without ProSilence. This should clearly show the benefits of the feature.

Power cable

The lawnmower comes with a 10-metre power cable. If more range is required an extension cord will be needed. This length of power cable is relatively standard for electric lawn mowers.

Bosch AdvancedRotak 750 Spare BladeBlades

The Bosch AdvancedRotak 650 has strong 41 cm hardened and ground steel blade. Whilst these will need to be sharpened occasionally, they will provide a clean, neat cut and they are extremely durable. If you ever need to replace them, parts are easily available and reasonably priced.

The 41 cm size is ideal for medium to large lawns as it gives a good combination of speed and efficiency whilst still being easy to manoeuvre.

The Bosch AdvancedRotak 650 is equipped with one blade that gives them two very effective benefits…

  1. Metal blades generally wear less quickly than plastic blades which results in you needing to replace the lawnmower blades less often.
  2. Metal blades are generally sharper and provide a cleaner cut to the grass blade, resulting in a neater, tidier and superior finish to your lawn and garden. As as stated above, the metal blades can be sharpened when needed unlike plastic blades.


Both the 650 and 750 come with a LeafCollect Blade that not only cuts the grass perfectly but also collects leaves for easy disposal. This feature is really very impressive and does indeed “vacuum” the leaves as well as cutting the grass perfectly leaving no chopped up leaves to clean up after, Well done Bosch for a feature that will actually make mowing the lawn that bit easier and quicker.

To see the LeafCollect Blade in action take a look at my video review above.

Replacement Blades

As well as being able to sharpen the blades, it is also possible to purchase a replacement blade for the Bosch AdvancedRotak 650 for around £30 for a genuine replacement. Replacing the blade is relatively easy for anyone with basic DIY skills and tools.

Height Adjustment

Bosch AdvancedRotak 650 Height

It is essential that your lawn mower is highly adjustable to accommodate different lawn types as well as to accommodate for the different seasons. The Bosch AdvancedRotak 650 gives you a choice of 7 settings ranging from 20mm to 80mm on the front and rear wheels. Wow! 7 height adjustments! This really is impressive as some mowers I have tested only have 3, so no matter what type of lawn you have or what your seasonal requirements are, this mower will be perfectly adjustable for your needs.

If you have left your lawn to grow for a while, don’t rush in and cut it on a very low setting. Rather start on a higher setting and progressively cut it lower. This will avoid leaving an untidy patchy appearance or even scalping parts of your lawn.

Is 7 separate cutting lengths better than the competition? Well yes. Some mowers at this price point only have 3 height adjustments, however, most will have 5 so it really does beat the competition hands down.

What really struck me about this mower when I was preparing to mow my lawn is the integrated height adjustment. Some mowers I have reviewed are so difficult to adjust the height, this is normally when the height adjustment lever is located towards the front of the mower or where you have to turn the mower over and manually adjust the front wheels and rear wheels separately.

With the Bosch AdvancedRotak 650 you get an integrated height adjustment feature that is so good and makes adjusting the height a breeze. The handle is located centrally and there is a perfectly placed button that is pressed to either raise or lower the mower. Again see my video above to see just how good this feature is.

Bosch AdvancedRotak 650 BladeCutting Diameter

The 41 cm cutting diameter of the Bosch AdvancedRotak 650 is ideal for medium to large gardens. The Ergonomic design and smooth running wheels will allow you to zip around the garden in no time but still provide the precision and ease of movement for curves and edges.

Remember, 41 cm is one of the larger deck sizes and is designed for lawns up to 650m², bare in mind a tennis court is around 260m².

If you like the features that Bosch have packed into this mower but want a slightly larger deck size then you may want to consider the identical AdvancedRotak 750 with a larger deck of 45 cm.

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Bosch AdvancedRotak 650 Grass BoxGrass box capacity

Having a large grass box is a bit of a double-edged sword. On the one hand, it means that all the trimmings are collected and you need to make less trips to empty it out. A smaller grass box or no grass box will make the lawnmower much lighter and easier to navigate.

Bosch have opted for a large 50 litre grass box on both the AdvancedRotak 750 and the AdvancedRotak 650 it makes sense as both mowers are designed for larger lawns. The mower does a fantastic job of compacting the cuttings into this very large grass box meaning less trips to the compost for emptying. The 650 mower does naturally become heavier as the grass box fills but I never had any issues manoeuvring the mower around the lawn. Having said that I don’t really have any steep inclines in my garden, but I guess you could always empty the grass box before it is completely full or starting to become heavy.

The grass box does come with a handy gauge indicating when the grass box is getting full, again a nice touch as not all mowers have this.

The grass box on both the 750 and 650 have a solid top and bottom and a woven material side. This allows the grass collection box to be folded nicely flat to reduce storage space. There are a couple of small negatives with this type of grass collection box:-

  • The material is more prone to damage from tearing when in use, however, the material is good quality and if looked after should not be an issue.
  • Because the grass collection box folds flat there are two fold-able arms near the box opening, when emptying the cuttings these slightly obstructs and restricts the flow of the cuttings when emptying. Also, because the Bosch 650 does such a good job of compacting the cuttings a good shake of the collection box is needed to eject all the cuttings.

These are very minor issues, I just thought you should be aware of them anyway.

Bosch AdvancedRotak 650 practicalitiesSafety Features

Another feature Bosch products are well known for is a great safety record. Obviously, if not used correctly, any lawnmower can be dangerous but Bosch has done everything they can to make the AdvancedRotak 650 as safe as possible without reducing its effectiveness.

The lawnmower comes with a detailed and clear safety guide and provided you follow these instructions you will not have any problems.

With the ProSilence feature Bosch have also kept vibrations and noise at extremely good levels for a mower of this power.

It conforms to all the main local and international quality and safety standards.

Another safety feature they have built in is double insulation to prevent any risk of electrical shock under normal conditions and use. It also has a protector to prevent the motor from overheating. When it reaches a certain temperature, the motor will shut off. Only once it has cooled down to acceptable levels it can be used again.

As with all corded lawnmowers, there is a safety button that needs to be held in in order for the starter grip to be activated. There is no additional removable safety key with the AdvancedRotak 650.

Roller (stripes)

Good news! The Bosch AdvancedRotak 650 does have a rear roller for a stripey lawn appearance.

Bosch AdvancedRotak 650 Review


The Bosch AdvancedRotak 650 does not have the ability to mulch the lawn out of the box, but an optional mulching attachment (Multimulch) can be purchased separately to enable it to do so.

The attachment can be purchased here

Bosch F016800499 MultiMulch for Gen5 AdvancedRotak Black

Bosch AdvancedRotak 650 User Manual

You can download the Bosch AdvancedRotak 650 user manual guide here


The Bosch AdvancedRotak 650 comes with a full 3 year manufacturers warranty covering both faulty materials and faulty workmanship, it does not cover general wear and tear or damage, blades and other consumables.

What’s Included in the box?

  • The mower itself
  • 50 Lt grass box
  • 10 metre cable
  • Instruction Manual


  • Features that help make mowing your lawn easier – ProSilence, ErgoSlide, LeafCollect, ErgoFlex and Integrated Height Adjustment
  • Powerful motor
  • Large grass box
  • Silent operation

All of the above Pro’s are designed to assist you in making the job of cutting your lawn easier whilst achieving a fantastic cut.


  • 10 metre cord a little short
  • Grass bag can be a bit tricky to empty

Ten metres for a mower designed for larger lawns is not long enough. I know this is not such a big deal and can be easily rectified by an extension cable, but it’s worth mentioning anyway.

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The Bosch AdvancedRotak 650 is a great all round mower that is designed for the maintenance of medium-to-large sized lawns.

Bosch AdvancedRotak 650 Practical

The build quality is what you would expect from Bosch, a good quality and solid feel to all parts of this mower, even the wheels have rubber tyres. This is a large mower with a powerful 1700w motor designed to tackle larger lawns and lawns that are more challenging, such as longer thicker grass.

What I like about this mower is the seven different cutting heights and the easy way you adjust the height from the central handle. This really does make a difference as many competitors have a single lever mounted at the front of the mower which you have to fight with to adjust the height. The other nice touch is the huge 50 Litre grass box that folds flat and has a “grass box full” display, well done Bosch.

Yes, it’s not the cheapest mower, but you do get what you pay for. Remember you get the Ergonomic and ErgoSlide handles that really do help to make the whole mowing experience that much easier as you can adjust the mower to accommodate the most comfortable posture whilst mowing your lawn. There are four power buttons, two on the upper grips and two on the lower grips making it easy to turn corners single handed whilst keeping the power going. This mower is extremely quiet for a mower of this size and power as the ProSilence reduces sounds by up to 75% to a very reasonable 75 dB.

And don’t forget the LeafCollect blades and the small footprint when this mower is folded away for storage.

All in all this Bosch AdvancedRotak 650 is a fantastic mower full of features that can be used to help make mowing your lawn that bit easier and enjoyable.

Where should I purchase this model?

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Bosch AdvancedRotak 650 Electric Rotary Lawnmower, Cutting Width 41 cm
134 Reviews
Bosch AdvancedRotak 650 Electric Rotary Lawnmower, Cutting Width 41 cm
  • ProSilence: Never be caught out by loud lawnmowers again.
  • Change the cutting height with total ease, the integrated system makes changing the cutting height of your mower easier than ever
  • Mow with less effort but maximum control, the Bosch ergoslide system allows you to manoeuvre your Rotak with ease and achieve your task quickly while being kinder to your back
  • Use your lawnmower to pick up autumn leaves effectively, furthermore, the collapsible grass bag can easily be folded down for storage while delivering an impressive 50 litres of debris collection for less emptying.

Last update on 2020-01-22 / Affiliate links / Images from Amazon Product Advertising API

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Last update on 2020-01-22 / Affiliate links / Images from Amazon Product Advertising API

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Additional Specifications

Working Area 650 m²
Cutting width 41 cm
Cutting height steps 7
Cutting height max 80 mm
Cutting height min 20 mm
Cutting height adjustment Manual
Collector volume 50 l
Cable Length 10 m
Height 99 cm
Length 125 cm
Vision Window No
Right or left start switch Left and Right
Foldable handles Yes
Grass bag filling indicator Yes
Roller Yes
Weight  16 kg