Dreame - L40 Ultra AE
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Reddit Reviews:
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Last updated: Jan 14, 2026 Scoring
Liked most:
335
157
"significantly worse object avoidance than than the Dreame x40 and L40 ... The best feature of the L40/X40/p10 pro ultra is that they have class leading object avoidance so you don't have to pick up your cat's toys or prep your house every time you want to run the robot meaning you can run it on a daily schedule which will keep your house cleaner. ... I run my X40s daily and they never get stuck on cables, cat toys and other random junk that ends up on the floor."
"The X40 is so far ahead in the object avoidance realm that it's not even a contest. ... I have my Dreame X40 running at midnight every day and never have to worry about it getting stuck on something or caught on something because it's object avoidance works so well, even in the dark and on all surfaces. ... It stays clear of cat toys, cords, socks, paper towels and all sorts of random household junk. ... the fact that I can run the Dreame daily will keep my house cleaner."
"The obstacle avoidance is also very good and I only have the pet in house setting on for pet messes and it recognizes my fake dog poop all the time and drive around it."
184
37
"I have also had 0 hair wrap. Both my old Roomba and Shark id have to clean the rollers weekly."
"The Anti-Tangle brush is actually Anti-Tangle. All my previous vacuums would get hair tangled in a single run - I'd clean them at least once a week (neato way more) to get all the hair out. After 24 hours, I see 0 hair stuck. Not one. ... That being said I LOVE the anti-tangle brush. 3 Months and I haven't had to clean the brush one time. It's literally perfect for me."
"I haven’t had any issues with tangles on the rollers ... Honestly, I think it’s doing really well considering I have long hair and shed a lot. ... The split roller on the E28 really works."
582
62
"I think its hands down the best all around option right now, especially once you hook it up to the water line and drain, i run it daily in our house and we got rid of our cleaning help because of it."
"I have an even thicker rug than this and my Curv has no issues ... It's the reason I bought mine because I have an even thicker rug than that and no robot could even climb onto it"
"I absolutely do not regret buying the robot vacuum. ... My room is a lot cleaner and dust-free now, and I can tell just by wiping my floor with a wet toilet paper and seeing barely anything picked up. ... I've been getting allergens a ton less, most of which not even in my room. ... All this for the commitment of a weekly emptying is miles more convenient than vacuuming traditionally, as opposed to making a few taps on my phone. ... looking back it was definitely worth the investment."
22
4
"This is a very hands off robot as it cleans the filter, the mops, and the base station for you. ... It’ll dry the dustbin, dustbag, and mops to prevent mildew from growing."
"I've had mine for 2.5 months and almost used daily, noone of it has happened to me, to me the unit seems like a rock solid design hardware wise, and the unit doesn't look remotely used. ... No clogs, no hair strands stuck, didn't need to clean the pads or the vacuum at all, looks brand new even after daily use."
"clean/dirty water tank ... washes mop with hot water ... dries it ... auto dispensers detergent"
1632
60
"Literally couldn't think of any pair of IEMs + dongle dacs could sound as analytical as the C3P+ for around $70. ... detail is just sooo much better. The C3P+ is just leagues ahead the I5 in terms of detail and resolution. ... the C3P+ is actually the closest sounding one to really expensive iems or headphone that I have."
"Crazy good from the jump! ... When you factor in they're only $99 and go toe-to-toe with Bose QC Ultra at $299, this is the deal of the year!"
"Can't recommend them enough for the value, sound like $200 earphones."
Disliked most:
125
87
"Be able to go over bath mats/water absorbent mats well. When my robot goes over it, it constantly lifts the edge up and makes it look like it’s trying to hump the bottom side of the carpet. This doesn’t happen if I meticulously use the remote control function."
"the robot has no obstacle avoidance ... In terms of obstacles, that‘s pretty much the main reason why I added the 10R to my other floor where my cat and his toys are, it has great obstacle avoidance."
"The Saros also managed to get itself stuck under one of our sofas and got scratched in the process (the back of the sofa has a higher opening, it tried to exit through the sides which are lower than 8 cm)."
30
123
"It's just very bad performance when it comes to vacuuming. ... This has been the same performance since day 1 with original brush also. ... It seems the suction is not as close to the floor as it should be. ... My budget eufy L60 can pick up this debris with no issue on deeper carpet. ... This is the most basic requirement of any vacuum."
"The bigger issue is that the paths are not as tight and overlapping. ... When I look at the cleaning paths with the MOVA On the tightest setting with the max number of passes (x3) It has nowhere near the coverage of the qrevos and the carpet is not clean. ... The Revos get really tight around legs while the MOVA barely tries to approach. ... Both my Qrevos are much quieter than the p10 ultra and actually leave the carpets looking clean."
"Hair Pickup on carpet is better than the S7 MaxV but still worse than the Neato D7. ... I confirmed this by running the S7 Max V first (with rubber brush), on my upstairs carpeted room - that I purposely haven't vacuumed in a week. S7 Max V barely got anything and had some wrapped around the edges - as it does. ... For me yes but I say that mostly because of the tangle free vacuuming of pet hair and the improved hair pickup on carpets. I was tired of cleaning out the old one and so far with this I have zero tangles. ... The S7 MaxV had the worst hair pickup on carpets, with the stock rubber brush, of all the bots I ever owned. Tangles were minimal but it didn't do well taking hair off the carpets (it did great on the hardwood/tile though). Swapping out the rubber to the bristle brush improved the pickup but increased the tangle problem - it also created a problem with auto-empty for me a few times. ... It mops/vacuums significantly better than my S7 MaxV. Especially on carpets (especially especially pulling dog hair off carpets). ... That being said I LOVE the anti-tangle brush. 3 Months and I haven't had to clean the brush one time. It's literally perfect for me."
0
9
"The tricut brush which you can purchase and install does a excellent job preventing hair wrap but I have found it is significantly less effective on hard floors. ... It seems to do fine in most cases but I did notice the robot fails to pick up medium sized debris like cat treats. ... Yesterday I did some drywall patching and had some drywall chunks and pieces for the robot to pickup and the tricut brush just pushed the debris around and accumulated it in the brush guard failing to push it into the dustbin. ... It would appear to pick it up but when the robot turned around all the debris would be left at the spot where the robot turned."
"It would leave rolled up hair everywhere since day one"
"For the L40 ultra, I also had the issue where it had very poor hard floor performance even with the tricut brush. ... Turned out that the roller wasn’t touching the floor so debris would not be picked up and was defective."
2
5
"After just 500 sqm of cleaning, I’ve been waiting for over a month now for it to be returned, and I still don’t know if they’ll fix the mop attachment issue."
"it is quite unreliable. Mine broke after only 2 weeks of use(one of the mops started grinding)"
"it refused to drop and re-attach the mop pads ... I've tried a few times but it didn't work, so I just disabled mops dropping."
1
5
"now the dock doesn't dispense water when cleaning mops or washpad, so there's no longer any mop cleaning."
"always leaving water on the bottom of the base station. ... Gross water that I'm sure would start smelling over time."
"When trying to wash the dock station using the app - it refused to pour any water ... fixed with a syringe like described [here]"
The L40 ultra AE doesn’t have an extending side brush, only an extending mop, and it is quite unreliable. Mine broke after only 2 weeks of use(one of the mops started grinding). Why dont you take a look at the L50 ultra? It has both extending arm and mop, but doesn’t have a retractable lidar(if you have lower hanging furniture).
r/RobotVacuums • Best robot vacuum for ~700-1200 USD in 2025 ->I also got the l40 ultra AE, but in op’s situation, the L40s ultra is a much better option
r/RobotVacuums • Looking for best option under $550 ->L40 is the best at obstacle avoidance I think The problem is how much do you value mopping because the eufy e28/25 seems to do the best there. And I think all flagships robots will likely switch to their roller style mops in the future because it's just more sanitary to clean the mop as you go. Narwal flow seems like it'll be better the eufy e28/25 when it releases but the price also seems too high That said, e28 seems to perform worse at object avoidance.
r/RobotVacuums • A bit overwhelmed... ->Just bought a Dreame L40S Ultra and a L40s Ultra AE, one for each floor of my house. So far they blow every roomba product ive had completely out of the water, However I like the AE more. The Regular Ultra (Non AE) is very finicky, its tried to eat every cord in my entire upstairs more than once and finds cords I didn't even know I had, its consider louder than the AE and the fact that it leaves its mop pads at the base is unreliable it sometimes "forgets" one or both then just throws a tantrum and shuts down, and it refusesto go under chairs or small tables that should be fairly navigable. The AE is a tank, it seems to have far superior navigation and object recognition, and the mopping is much more reliable. I did tons of research on Vacuum wars website and YouTube page and caught them on Black Friday at less than half price each.
r/RobotVacuums • What robot vacuum/mop is the best? ->I ordered a white L40 Ultra from Amazon with code DMBFCML40 $359.99. Found on Slickdeals
r/RobotVacuums • Black Friday / Cyber Monday under $380 help ->I recently got a Dreame L40 and really like it. It can leave the mop pads at the dock, which is a really useful feature if you have indoor cats. You can set it to vacuum first, then return to the dock to pick up the mop pads so it's not dragging them all over with bits of litter stuck to the pads.
r/RobotVacuums • Choosing a robovac for a housewarming present. Any suggestions? ->Look for a vac that has an extension arm for the side brush and mop pad so it can reach into corners. I got a Dreame L40 Ultra and it has these features but I've only had it a couple of days.
r/RobotVacuums • Looking for a robovac truly does edge clean. So any recs? ->The Eufy with roller mops (S1, E25, E28) are generally regarded as the best for hard floors. If you're on a budget, the Dreame L40 is the best bang for the buck right now. It comes with a rubber roller that isn't great for hair but you can upgrade the optional tricut roller that cuts the hairs. I bought one on eBay from their official store on sale for Memorial Day for $500 with free shipping. Supposedly you can call their physical store in California for an even better deal and they will ship.
r/RobotVacuums • recommendation for a person w long hair and a dog that sheds like crazy ->I had a cheap one years ago, and despite the low price, it was a waste of money. I recently purchased a Dreame L40 and it cost a lot more than I wanted to spend - but it was actually worth every cent. It cleans my floors better than I can myself
r/smarthome • Will I regret buying robovac, just another overpriced toy? ->I got the Dreame L40 Ulta (USA) during Black Friday and I’m thrilled. I’ve got dogs and cats and wayyyyy too much fur and dust (ranch life). I run it daily. Vacuum. Send it to dock then mop a room a day and it’s made a huge difference. No carpet, all cement floors and vinyl sheet.
r/RobotVacuums • Best robovac/mop ->Vslam is pretty outdated i hated how mine just ran into everything, scratching appliances. I upgraded to the dreame L40. the navigation is so much better, but i am returning it and switching to roborock
r/RobotVacuums • Roomba j7 soured me on robot vacuums. Is it time to try again? ->I found the obstacle avoidance on the Qrevo series to be pretty disappointing. Switched to Dreame L40 and have been very happy. They almost never grab a cord.
r/homeassistant • What are the best robot vacuums right now ->Hello Amandainpdx! I’m deciding between: 1) Dreame L40 And 2) 3i P10 Ultra I would go with your recommendation for the Dreame, but it’s not Prime shipping. And I have 2 dogs, and not sure what they will think of it. With the 3i P10 Ultra being Prime with free returns, so you think this makes better sense? Thanks in advance!
r/RobotVacuums • Prime Day last chance- a few hours left to score PD deals. Are you on the fence? Let's cut through it. ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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