Dreame L40S Ultra

C CNET Max McHone · reviewer

The Dreame L40s Ultra AE is a lot more than a tiny vacuum that bounces around your house. It features incredible suction power and a built-in mop so it can tackle just about any mess you throw at it. Plus, the advanced base station means it can run for up to 100 days without maintenance.

S Shane Starnes Shane Starnes · 1.1M subscribers · Sept 2025

This is definitely one of the most powerful vacuum cleaners that I've ever tested at this price point. With 19,000 Pascal of suction power, this is able to pick up pretty much anything that I threw at it. With that strong suction power, this was able to clean up messes on both hard surfaces and my carpeted areas. On hard surfaces, this had no issues picking up larger debris like cereal.

C CGMagazine Justin Wood · reviewer

It mapped my entire main floor in minutes. Not only that, it automatically detected each room, segmented them intelligently, and made it remarkably simple to rename and customize everything. No guessing, no fiddling with borders, no frustration. It just worked.

K KhanFlicks KhanFlicks · 1.1M subscribers · Aug 2025

In my testing, the L40S crushed it, picking up every mess I threw at it. From cereal to hair, it handled it effortlessly. On both hardwood floors and carpet, it easily matched the X40 in suction. Even though the L40 is technically rated a bit lower, it also got this wild little trick, an auto extending side brush that reaches deep into corners.

V Vacuum Wars Christopher White · reviewer

Our winner is the Dreame L40S AE . And it’s extremely important to look for the “AE” at the end, because Dreame has two other L40S models . In our head-to-head comparison, the AE version was significantly better, especially in obstacle avoidance .

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

Wow, it's doing a good job. Hello everyone. This is just a dad. Today I'm going to do the first look, show you how to set up for the first time and the unboxing on this brand new Dream L40S Ultra Robot vacuum cleaner. Now, this is a brand new model.

T Trusted Reviews Gian Estrada · reviewer

The Dreamehome app takes that same attention to detail into carpet care, letting the L40s Pro Ultra automatically lift its mop on rugs, vacuum twice on thicker pile, or avoid delicate mats entirely depending on what its sensors detect underfoot.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

I love that they both can extend their side brush into the corner for corner cleaning capabilities. And they can both move their mop pad right up against the wall. This feature here moves the mop pad and it mops right next to the wall. That's an awesome feature. I love both of those features. Now, another difference is a dirt detection sensor. So, the L40 has what's called a dirt detection sensor.

After testing the L40s Ultra, Ultra AE, and Ultra CE, only one rose above the rest — becoming our Best Value Pick and breaking into the Top 3 on our Top 20 list. Find out which one in our brand-new video!

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

I love that they both can extend their side brush into the corner for corner cleaning capabilities. And they can both move their mop pad right up against the wall. This feature here moves the mop pad and it mops right next to the wall. That's an awesome feature. I love both of those features. Now, another difference is a dirt detection sensor. So, the L40 has what's called a dirt detection sensor.

I Ikefield Direct Ikefield Tech Team · reviewer

In fact, in multiple lab and real-world tests, the L40 Ultra outperformed even Dreame’s more expensive models — while costing significantly less.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

So, I like it's doing a good job of avoiding that cable. I like how it goes back and forth in nice straight lines because of the LAR navigation. So it is recognizing that toy also which can be very hard to recognize because it's not very tall. So it it has to re rely on the front sensor. The LAR is not hitting that toy. The front sensor is. So the sensor is working very good.

I Ikefield Direct Ikefield Tech Team · reviewer

In fact, in multiple lab and real-world tests, the L40 Ultra outperformed even Dreame’s more expensive models — while costing significantly less.

R RodrickViews RodrickViews · 102K subscribers · Aug 2025

So, I've been using the Dreamy L40S Ultra for a few weeks now, and it's been doing a great job at keeping my house clean. I've been having it run every day on schedule, and it's keeping the pet hair, the dust, debris all at bay. And big thanks to Dreamy for sending this unit over for review. Now, starting with the unboxing, it does feel like a premium experience.

I Ikefield Direct Ikefield Tech Team · reviewer

In fact, in multiple lab and real-world tests, the L40 Ultra outperformed even Dreame’s more expensive models — while costing significantly less.

E Eric Welander Eric Welander · 78.1K subscribers · Aug 2025

The Dreamy L40S Ultra has the strongest suction power of any vacuum I've ever tested at 19,000 Pascals. In my experience, this means it has no problems picking up any kind of dirt I throw at it. But it's quiet for this strong of suction. Not something that would wake up my children upstairs.

P PistonHeads UK Article

This is my first robovac but I'm very happy with the dreame app, shows exactly where the robot has been and can customise almost everything.

D David A. Velez David A. Velez · 54.7K subscribers · Aug 2025

This one has been just as great, honestly, as the last several dream robots that I've reviewed on this channel here before.

The Dreame L40s Ultra is truly a lifesaver. Now, instead of spending hours on my floors, I get to spend that time playing with my kids.

D David A. Velez David A. Velez · 54.7K subscribers · Aug 2025

This one has been just as great, honestly, as the last several dream robots that I've reviewed on this channel here before.

I am obsessed with my new @dreame.usa L40s Ultra Robot Vacuum and Mop!

G GH Tech Review GH Tech Review · 31.1K subscribers · Sept 2025

It has an impressive suction power of 19,000 Pascals. It pulls dirt, dust, and debris from deep within the carpets while still being gentle and efficient on hard floors. And as a bonus, it has a clever feature called Easy Leap, and this allows it to go over low obstacles.

S Saiga NAK Article

It is smart despite its small size.

B Baris Alkis Baris Alkis · 24.5K subscribers · Jun 2025

With an impressive 19,000 Pascal suction power, it leads the pack at its price point. Thanks to intelligent side brush extension, 40mm obstacle crossing, and 3D adapt obstacle avoidance, it tackles everything from carpets to corners without breaking a sweat. Its AI powered mapping system maps your place, navigating at the trickiest layouts with ease.

V Vac Tech Vac Tech · 16.2K subscribers · Aug 2025

It works very well and according to Dreamy, it can pick up hair nearly a foot long without tangling. The L40S Ultra features Dreamy's extending mop pad and side brush. The dual flex arm side brush on the L40S works well, very gently popping out to clean into corners and along edges. Along with this, one of the mop pads can extend outward to clean right up to any edges it can reach.

V Vacuum Chef Vacuum Chef · 13.7K subscribers · Sept 2025

When it comes to performance, the L40S more than holds its own.

L Lavelab EN Lavelab EN · 1.2K subscribers · Dec 2025

Everything worked perfectly in use. Among the accessories included in the package are a second dust bag for the station, a cleaning brush, and 200 ml of cleaning solution. In terms of maintenance, the fact that the mops are automatically loaded with water and cleaned at the station greatly simplifies the task. They are cleaned with hot water at 75°.

T Tech Trends Hub Tech Trends Hub · 587 subscribers · May 2026

This is a premium all-in-one robot vacuum and mop system. And the first thing that stands out is the sheer suction power. You're getting up to 19,000 Pascal suction, which is extremely high for a robot vacuum in this category.

G GenuineCritics GenuineCritics · 580 subscribers · Mar 2026

The Dream L40S Ultrace CE robot vacuum and mop combo is designed for people who want one of the most advanced hands‑free cleaning experiences available today.

T Tech King Tech King · 465 subscribers · Nov 2025

Right off the bat, the L40s Ultra impresses with its massive 19,000 Pascal suction power. That's one of the highest ratings we've ever seen on a robot vacuum. It means no crumbs, no dust, no pet hair left behind, not even deep in carpets. This thing digs in and pulls out everything, leaving your floors spotless.

M MrDroidTech MrDroidTech · 152 subscribers · Jul 2026

I've put it to the test, and I can confidently say that it's one of the most effective robot vacuums I've ever used. The way it glides across different floor types, effortlessly picking up dirt and debris, is truly impressive. Another key feature that sets the Dreame L40S Ultra AE apart is its smart brush selection.

A AllExpertReviews AllExpertReviews · 100 subscribers · Apr 2026

The DreamL's UltraA black robot vacuum truly is a night in shining armor.

A AllExpertReviews AllExpertReviews · 100 subscribers · Jan 2026

The Dreame L40s Ultra Robot Vacuum with mop pads is a master of its domain. A digital janitor that glides across your floors with the grace of a seasoned dancer in the determination of a tireless explorer. This pristine white machine is more than just a cleaner. It's a silent sentinel, ever vigilant against the encroaching tides of dust, dirt, and debris that threaten to sully your living space.

L Lou Coe Lou Coe · 52 subscribers · Feb 2026

The biggest improvement with the Dream L40S is cleaning performance, especially if you've got carpets. The extra suction power is noticeable. On hard floors, the difference is fairly small because the L10s is already pretty good. But on carpets and rugs, the L40 pulls more dirt, particularly fine dust and pet hair. Obstacle avoidance is also improved.

L Lyra Tech Lyra Tech · 28 subscribers · Jul 2026

So, the Dreame L40S Ultra is undeniably a premium robot vacuum and mop. Its incredible suction, advanced mopping system, >> and highly automated dock deliver a truly hands-off cleaning experience. While it comes with a higher price tag and some minor connectivity quirks, it justifies the cost by nearly eliminating your daily floor cleaning chores.

J Josh's Household Josh's Household · 15 subscribers · Nov 2025

The Dream L40S Ultra AE is a vacuum and mop combo built to handle real homes, pet hair, crumbs, spills, and everything in between with almost no effort from you. Let's start with the power. The L40S UltraAE has 19,000 Pascals of Vormax suction, which is massive. It easily lifts fine dust, cereal, and debris out of carpet fibers and floor gaps.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

But in my opinion, the L40S AE is the one to get, but but it still doesn't beat the the original L40.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Aug 2025

Wow, it's doing a good job. Hello everyone. This is Just a Dad. Today we're going to do the mopping test on this Dream L40S robot vacuum cleaner. Here we got some muddy paw prints. We got a bunch of dirt and debris in the corner. We're going to see how well it cleans up this testing area. Okay, we're going to do the corner cleaning testing area. Let's do room.

T testit testit · 142K subscribers · Nov 2025

However, not all objects are recognized correctly. Very small objects, such as bottle caps, were simply vacuumed up. Charging cables, shoes, or brooms are reliably maneuvered out of the way. In addition, all objects are marked on the map and the Dreamy takes a photo of all obstacles. That's a really cool feature.

J Jamie Andrews Jamie Andrews · 16.5K subscribers · Sept 2025

The biggest downgrade is with the object avoidance system. Dreamy removed the RGB camera and LED lights, leaving just a single structured light sensor. For context, structured light works by projecting a light pattern and using a low res camera to interpret distortions in that pattern to detect obstacles.

G Gadget Flow Gadget Flow · 398 subscribers · Aug 2025

Users note that the dock's large water tanks mean the dirty water needs to be emptied daily, and the mop's post cleaning wash and dry cycle takes a few hours.

V Vacuum Wars Vacuum Wars · 413K subscribers · Sept 2025

Welcome to Vacuum Wars and to our review of the Dreame L40s Ultra series robot vacuums. The L40s series is Dreame's mid-tier robot vacuum lineup where they offer most of the specs and features of the higher-end models, but at more reasonable prices.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Feb 2026

Now, this robot Dreamy L40S, I did purchase it with my own money.

J Just A Dad Approved Just A Dad Approved · 350K subscribers · Feb 2026

Now, this robot Dreamy L40S, I did purchase it with my own money.

S Stephen Robles Stephen Robles · 228K subscribers · Aug 2025

This is the Dream L40S Robot Vacuum and Mop. Not only does it have powerful suction to keep your carpets and floors clean, but its mops can auto detach or attach and even lift themselves so it could do hardwood floors and carpets at the same time, but doesn't get your carpets wet.

A AllExpertReviews AllExpertReviews · 100 subscribers · May 2026

The Black Dream L40s Ultra A robot vacuum cleaner is a powerful all-in-one cleaning solution, featuring a trickit brush and 19,000 PA of suction. The device includes an auto-empty dust bin and a self-cleaning washboard for the mop, which uses hot water and is hot air dried. The mop also lifts up to 10.5 mm to avoid wetting carpets.