Lefant M2 Robot Vacuum Cleaner Review: a solid little workhorse for everyday cleaning

I’ve been using the Lefant M2 robot vacuum and mop in my flat for a few weeks now, in a setup that’s a mix of laminate, a couple of rugs, and too much furniture. I’m not a gadget collector and I’m usually pretty skeptical about these robot vacs. Most of the cheaper ones I’ve seen just bump around like drunk Roombas and leave half the dirt in the corners. So I went into this test with low expectations, especially around the mopping part.

In day-to-day use though, the first thing that stood out is that this one actually knows where it’s going. The dToF laser navigation and mapping aren’t just buzzwords; it really does a proper map of the rooms and follows a logical path instead of random zig-zag chaos. I noticed that straight away on the first full clean because it didn’t keep going over the same spot ten times while ignoring others.

My place is around 80 m², and with some chairs, low furniture and a couple of high-pile-ish rugs, it’s not the easiest layout. The M2 handled that better than I expected. It still gets stuck sometimes (especially on a frayed rug edge and a clothes airer), but it’s not constantly crying for help. It also doesn’t slam into furniture at full speed like cheaper bump-and-go models I’ve tried at friends’ places.

Overall, my first impression after a few days was: this isn’t magic, but it actually reduced how often I need to vacuum manually. I still use a normal vacuum once a week or so for edges and stairs, but for everyday dust, crumbs, and pet hair, it picks up most of it without me thinking too much. Not perfect, but a real time saver if you’re realistic about what a robot can and can’t do.

Price-wise, the Lefant M2 sits in that mid-range where you’re not paying top-brand prices, but it’s also not a bargain-basement robot. For the money, you get LiDAR/dToF navigation, decent suction, app control with multi-floor mapping, and a basic mopping feature. Compared to some better-known brands with similar specs, it’s usually cheaper, which is why I was interested in it in the first place. You can definitely pay more for a fancier name and a self-emptying base, but if those aren’t priorities, this one hits a decent balance.

The main trade-offs for the price are: small dustbin, no self-emptying dock, and slightly less polished software/manual. Emptying the bin after each run is a bit annoying at first, but you get used to it. If you’ve got pets that shed heavily or kids dropping food everywhere, you might feel that more. The build feels solid enough but not premium; it doesn’t feel like it will fall apart in a year, but it also doesn’t have that heavy, expensive feel some higher-end models have.

Running costs are the usual: you’ll need to replace filters, side brushes, and mop pads over time. Those are generally cheaper for brands like Lefant than for big-name robots, which is another small point in its favor. I didn’t see anything in the design that looked like a clear weak point that would break quickly, but obviously that’s something you only know for sure after a year or two of use.

If you’re on a strict budget and just want something that randomly bumps around and picks up some dirt, you can find cheaper robots. If you want top-end with self-emptying, advanced mopping, and super-polished apps, you’ll need to spend more. The M2 sits in the middle and, in my opinion, offers good value for someone who wants smart navigation and decent suction without going all-in on price. It’s not the best on the market, but for what it costs, it earns its keep.

The Lefant M2 has a typical round robot vacuum shape, about 32 cm in diameter and 9.5 cm high. The height matters more than you’d think: it just barely fits under my sofa and TV stand, which is a big plus because that’s where dust likes to build up. Some bulkier robot vacs I’ve seen at friends’ places don’t make it under there, so this slightly lower profile is actually useful. The white color looks clean out of the box, but dust and marks show pretty quickly, so if you’re picky about it looking pristine, you’ll be wiping it down now and then.

On top, you’ve got the LiDAR turret for the laser navigation and a couple of basic buttons (start/pause, home). Most of the control is meant to be through the app, and that’s how I used it 95% of the time. The dustbin is accessed from the back and is, honestly, on the small side. If you have pets or shed a lot of hair, expect to empty it after pretty much every run. That matches what one of the Amazon reviewers said – I agree, a bigger bin or self-emptying base would have been nice, but that’s not what this model is.

Underneath, the layout is standard: main brush in the center, side brush, wheels with enough clearance for small thresholds, and the slot for the mop pad and water tank. It climbs over my door thresholds and onto rugs without much drama, but there is a limit. High, fluffy rugs or very thick thresholds will still be a challenge. It’s not a tank. The front bumper works fine, and with the laser, it doesn’t slam into furniture hard – it slows down before touching most obstacles.

Overall, the design is practical more than pretty. It’s simple, nothing flashy, but it does what it needs to. My only real complaint is the tiny dustbin and the fact that the glossy white shows every scuff. If you’re after something that looks like a design object, this isn’t it. If you just want a functional robot that fits under furniture and doesn’t look too cheap, it’s alright.

The battery is advertised at up to 140–160 minutes, and that’s roughly in line with what I saw, depending on the suction level. On standard mode, it easily covered my 80 m² flat with about 40–50% battery left. On max suction, it drops faster, but it still managed a full clean in one go. For larger homes, the auto-recharge and resume feature matters more. I tested this by starting a clean when the battery was already low; it went back to the dock, charged, then continued where it left off. That part actually worked properly, not always the case on cheaper units.

Charging from low battery to full takes a few hours, so this isn’t something you run five times a day. But realistically, most people will schedule it once a day or every other day. For that use, the runtime is more than enough. I never ran into a situation where it died mid-clean in normal use, unless I deliberately pushed it on max suction with repeated room cleans.

Noise-wise, on the lower suction settings, it’s fairly reasonable. You can watch TV with it running in another room and still follow along. On max power, it’s obviously louder, but not ear-splitting. I’d compare it to a quiet-ish handheld vacuum. If you’re sensitive to noise, you’ll probably just schedule it to run when you’re out or in another part of the house. The mopping mode doesn’t really add extra noise beyond the usual motor and wheels.

Overall, the battery and noise balance is decent. It’s not ultra-silent, but it’s also not the kind of roar you get from a full-size vacuum. And the runtime is long enough that you don’t need to babysit it or worry about it dying halfway through a normal apartment. For big multi-floor houses, you’ll probably just let it handle one floor at a time, which the 3-level mapping actually supports pretty well.

Performance-wise, this is where the Lefant M2 surprised me the most. The 6000Pa suction rating sounded like marketing at first, but in practice, on max power, it really does pull a lot out of carpets and rugs. I tested it on a medium-pile rug that I thought was already clean after using my regular vacuum. The robot still filled its small dustbin with fine dust and hair on the first pass, which says more about how much dust hides in rugs than anything else. On hard floors, it picks up crumbs, pet hair, and dust in one or two passes without leaving much behind.

The dToF laser navigation is the real difference compared to the cheap bump-and-go robots I’ve seen. It actually plans a route: it goes around the edges first, then fills in the middle with straight lines. You can see that clearly on the app map. It doesn’t waste time going over the same spot randomly, and it rarely misses areas unless something blocks it. In my cluttered living room with chair legs and cables, it does slow down and sometimes gets tangled, but much less than I expected. No-go zones in the app help a lot – I drew a box around my cable nest and it just avoids it now.

On the downside, the side brush sometimes flicks crumbs away on hard floor, especially around edges, so you might see a few bits pushed under skirting boards. Also, the robot isn’t a champ in tight corners (none of them are, because of the round shape). You’ll still want to occasionally run a normal vacuum or a hand vacuum for corners and edges. And on dark or very shiny floors, I noticed it hesitates a bit more, probably because of the sensors, but it didn’t cause any real problem beyond a bit of extra shuffling.

Overall, I’d say the cleaning performance is good for the price bracket. It genuinely keeps floors much cleaner between manual cleans. It’s not replacing a full-size vacuum entirely, but it does handle the boring daily crumbs and dust well. If you expect spotless corners and stairs done, you’ll be disappointed – but if you want your main walking areas and visible floor space cleaned without effort, it does the job.

Out of the box, the Lefant M2 comes with the robot itself, a charging dock, power adapter, mop holder, water tank, and a small cleaning brush. No self-emptying base here, so if you want that, this isn’t the model. Setup is fairly straightforward: plug in the dock, let it charge, download the Lefant app, connect it over Wi‑Fi (it supports both 2.4G and 5G, which is nice because some brands still don’t), and then let it do its first full mapping run.

The app is decent. Not fancy, but it covers the main stuff: you can see the map, split and name rooms, set no-go zones, and schedule cleaning. You can also choose suction levels and water levels for mopping. I found the map accuracy pretty solid after the second run. The first map was a bit messy, but once it did a couple of full cleans, the layout of my flat was actually recognizable. Compared to some cheaper app-based vacuums I’ve seen, this one feels more stable and less buggy, at least on Android.

In terms of features, you get the basics plus a few nice extras: 3-level mapping (good if you have multiple floors), custom cleaning (room by room, or specific zones), and voice control via Alexa/Google Home. Voice control is more of a novelty for me – I mostly just use the app – but telling it to start cleaning while I’m heading out the door is handy. It does respond pretty reliably once linked.

My only gripe on the presentation side is that the manual feels a bit rushed. The English is understandable but not super clear in some parts, especially for the more advanced settings. You can figure it out with a bit of trial and error, but if you expect plug-and-play with zero thinking, you might get slightly annoyed. Still, for the price range, the overall feature set is pretty solid. You’re not getting premium-brand polish, but you do get most of the practical functions you actually care about day to day.

On the vacuuming side, the Lefant M2 is genuinely effective for everyday dirt. Pet hair, crumbs from kids, dust bunnies under the sofa – it handles all that without much drama, especially on hard floors and low to medium rugs. I liked that it automatically boosts suction when it detects carpet. You can hear the motor ramp up a bit, and it does pull more dust out that way. For someone like me who can’t be bothered to vacuum every single day, it keeps the place looking much tidier with almost no effort.

The mopping function, though, is more of a light wipe than a proper mop. The 300 ml water tank with three water levels is nice, and it does leave the floor looking fresher, but don’t expect it to scrub dried sauce or sticky kitchen mess. I tested it on some dried coffee drips and it needed a manual wipe afterwards. The robot just drags a damp cloth behind it – there’s no pressure or scrubbing action. For dust and light footprints, it’s fine. For real stains, you’ll still need a regular mop.

One thing that is handy is being able to choose where it mops in the app. You can tell it to avoid carpets when mopping, or just run mopping in the kitchen and hallway. It doesn’t always perfectly avoid every rug if they’re very flat, but in my case, it did a decent job staying off the main living room rug when in mop mode. I still sometimes roll up smaller mats just to be safe.

So in terms of overall effectiveness: as a vacuum, it’s good and actually useful day to day. As a mop, it’s a mild bonus that keeps floors from looking dull but doesn’t replace a proper deep clean. If you buy it mainly for vacuuming and treat mopping as a little extra, you’ll be happy enough. If you expect it to replace a bucket and mop completely, you’ll be underwhelmed.