Knowledgeable’s Ranking
Execs
- Good cleansing outcomes, each when vacuuming and mopping
- Brutal suction energy (11,000 Pa)
- Clever impediment avoidance system
- Good entry alongside edges and in corners
Cons
- Base station takes up some area
- Thorough cleansing takes a very long time
- Nonetheless dear
Our Verdict
Is that this one of the best cleansing system proper now? There’s rather a lot to be stated for it. By way of options, efficiency and cleansing outcomes, the variations between the Dreame L40 Extremely and the top-of-the-line X40 Extremely and Roborock’s S8 MaxV Extremely are delicate. Minimal upkeep and a user-friendly app with in depth customisation choices – at a considerably higher value. Can it get any higher?
Worth When Reviewed
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Greatest Pricing Right now
If you happen to’re in search of one of the best automated ground cleaners available on the market, look no additional than the highest fashions from essentially the most respected producers, comparable to Roborock’s S8 MaxV Extremely or Dreame’s X40 Extremely. These are superior all-in-one machines outfitted with the newest expertise accessible right now. They’re environment friendly at vacuuming, mopping and navigating, however they arrive at a value – they’re a few of the priciest robotic vacuums accessible now.
However most producers supply, alongside these “flagship” fashions, a wide range of choices in numerous value ranges. Dreame, for instance, has its D series of easier entry-level fashions. These low-priced variants lack the newest options and have restricted suction energy and impediment detection and avoidance capabilities.
Dreame’s L-series fashions
Subsequent up is the L-series, the place we discover profitable fashions such because the L10 and L20 – nice machines that we’ve praised through the years. Right here, it’s necessary to decide on the Extremely variations, which have essentially the most options and are arguably one of the best at clever navigation and mopping. These fashions can each refill the robotic with clear water and handle the soiled water on the finish of the cleansing session, whereas the robotic itself can successfully establish and keep away from obstacles in its path.

Dreame
The newest mannequin within the collection, the L40 Extremely, largely shares expertise with the top-of-the-range X40 Extremely. At first look, they’re nearly indistinguishable, though there are some slight variations.
The set up is barely value mentioning. Trendy robotic vacuum cleaners are linked by way of Wi-Fi, and to get began, all it’s important to do is observe the step-by-step directions within the accompanying app. Dreame does this in an exemplary manner.
In-depth app
After a brief reconnaissance tour which, because of the extraordinarily environment friendly and correct navigation system (Lidar), solely takes a couple of minutes, your own home is prepared for cleansing. Along with the same old settings – comparable to naming rooms and including no-go zones or digital partitions – there are a number of options to discover within the app.
For instance, you’ll be able to fine-tune the cleansing mode for any room within the house and actually get all the way down to particulars: set the suction energy, the depth of mopping and the variety of cleansing circles. You too can customise how the robotic handles carpets – ought to it increase the mop pads (10.5 mm) because it vacuums them, or go away the mops within the base station and handle the carpets first earlier than tackling the remainder of the ground?
This implies you’ll be able to actually tailor the robotic to your own home, and it’s undoubtedly value spending an hour or so exploring the app’s options.

Eyes that see all the things!
Andreas Bergsman
To enhance the Lidar system, the L40 Extremely is supplied with an RGB digicam and 3D structured mild within the entrance to establish and keep away from any obstacles – which it does brilliantly. Any ‘traps’ I positioned on the ground had been instantly recorded, and the app allowed me to see how the robotic recognized the impediment. I may even appropriate it afterwards if it was mistaken.

Dreame L40 Extremely successfully identifies objects to keep away from.
Andreas Bergsman
The robotic additionally has a five-channel color filth detection system that, along with the digicam, identifies ingrained stains. If such a stain is detected, a extra thorough mopping is carried out. Whether or not this perform is lively or not can in fact be set within the app.
Cleansing proper as much as the wall
Just like the X40 Extremely, the Dreame L40 Extremely is supplied with Sidereach and Mopextend, which implies that each the facet brush and the fitting mop pad could be angled out to succeed in alongside edges and additional into corners. The AI-based system determines if and when that is needed, and it really works very well. However the legal guidelines of physics nonetheless apply – the robotic is spherical, as is the mop pad – so it will possibly’t attain the previous couple of millimetres into corners.

The fold-out mop pad will get good entry alongside edges.
Andreas Bergsman

Sidereach and Mopextend in motion.
Andreas Bergsman
The cleansing actually is high class. The suction energy is specified at a most of 11,000 Pa – barely lower than the X40 Extremely‘s 12,000 Pa – however nonetheless sufficient to suck up all the things within the robotic’s path. The 5,200 mAh battery offers as much as 194 minutes of runtime, relying on the setting, which is greater than acceptable.
Periodically, the robotic returns to the bottom station to refill the inner tank with water and detergent and to scrub the mop pads with scorching water (as much as 65°C). On the finish of the cleansing session, the mud container is emptied and the mop pads are washed after which dried with scorching air.
Must you purchase the L40 Extremely?
To summarise, the Dreame L40 Extremely is a state-of-the-art robotic vacuum cleaner that mixes highly effective suction capability with superior cleansing options and revolutionary equipment. The variations in comparison with the top-of-the-line X40 – barely greater suction energy, barely extra highly effective battery and water that’s 5°C hotter – are actually marginal and hardly definitely worth the value distinction. If you happen to like Dreame as a producer and wish the newest in expertise, that is the mannequin to decide on!
Specs: L40 Extremely
Mannequin: L40 Extremely
Producer: Dreame
Battery: 5 200 mAh
Operating time: As much as 194 min
Suction energy: As much as 11 000 Pa
Mud container: 300 ml
Quantity of vacuum cleaner bag, base station: 3.2 litres
Clear water tank quantity, base station: 4.5 litres
Soiled water tank quantity, base station: 4 litres
Hepa filter: Sure
Mapping: Laser (Lidar), AI RGB 3D structured mild
Communication: wifi
Related App: Sure
Map perform: Sure
With room division: Sure
Suitable with Google Assistant/Amazon Alexa/Apple Siri: Sure/Sure/Sure
Different: Cleans with scorching water, TriCut brush with anti-tangle safety for hair included, digicam and two-way communication
Dimensions (base station): 590 × 457 × 340 mm
This text initially appeared on our sister publication M3 and was translated and tailored from Swedish.