Dreame L40s Pro Ultra (robot vacuum cleaner): our review

The patch of carpet beneath the coffee table can harbour crumbs long after the rest of the room looks tidy. With suction of 19000 Pa, the L40s Pro Ultra sits among the stronger advertised ratings, giving carpet owners a reason to consider it. That is a useful starting point. Manufacturers measure suction differently, though, so pascals cannot promise how much dirt will actually leave your carpet.

The anti-tangle main brush adds to the appeal for homes dealing with hair. Its design targets a familiar maintenance nuisance, without making brush care disappear. We like that combination more than a large suction figure alone: picking up debris and keeping the brush manageable belong in the same conversation.

There is a brake on our enthusiasm: cleaning effectiveness remains unmeasured in the documentation. Treat the specification as a reason to shortlist this robot, rather than proof that your living room rug will emerge spotless.

Wooden flooring through the sitting room, tiles by the cooker and a carpet beyond the doorway give a cleaning robot different jobs within the same home. The L40s Pro Ultra uses rotating mop discs, providing an active washing movement beyond simply trailing a damp pad. That makes its mopping equipment a meaningful part of the proposition, especially when the kitchen needs attention after dinner.

Its mops also lift on carpets. This is the relevant feature when a cleaning route moves between hard flooring and carpet, although it should not be read as a promise for every pile. A thick rug still calls for care when arranging the route.

For unfinished, waxed or poorly sealed wooden flooring, manufacturers advise checking that the surface tolerates moisture before using a mop. We would give that check priority over convenience. Less work with a mop is appealing; choosing the right treatment for the floor comes first.

Hoping to return from work without grit crunching beneath your slippers? The stated 195 min gives this model a long running window, with scope to work through several rooms. The gentlest setting underpins that figure. Stronger suction and mopping shorten the available cleaning run, so it should never become a promise about how much of your house will be finished per charge.

Charging takes 3,5 h, a leisurely pause that suits a daily routine better than repeated urgent clean-ups. Planning cleaning around your working day makes more sense than expecting a quick turnaround between household interruptions.

LiDAR navigation works alongside a camera, with 3D obstacle detection adding another element to navigation. No-go zones let you mark areas to leave alone. Follow manufacturers’ preparation advice and clear socks, cables and small objects beforehand. The laundry basket remains annoyingly dependent on human management.

A robot that finishes the floor but leaves a soggy mop for you to sort has only moved part of the chore. Here, the dock combines automatic emptying with mop washing and drying. That maintenance routine is a strong reason to consider this model, particularly if your aim is fewer cleaning jobs waiting when you get home.

The robot carries a 350 mL dustbin, a typical capacity for this category. Automatic emptying takes some of the repetition out of clearing it. That capacity belongs to the robot itself, rather than the dock’s collection container.

Before ordering, ask the retailer about the dock’s footprint, replacement bags, mop pads and brushes, alongside warranty cover, after-sales support and returns. These practical details help you judge where the station will live and how you will maintain it. An accessible position matters: a corner that makes routine care awkward will soon lose its charm.

The stated 74 dB puts this model among the loudest advertised noise levels. Schedule cleaning while you are out if you can. A robot working through the rooms during the commute is a more appealing arrangement than sharing the sitting room with it during a quiet evening.

App compatibility and Wi‑Fi 2,4 GHz connectivity provide the connected side of that routine. Alexa, Google Assistant and Siri/Shortcuts compatibility also give it voice assistant options. Those features suit a household that wants cleaning to fit around existing habits, though the physical preparation of the floor still matters.

Our overall assessment puts it among the best on the site. We would choose this combination for a home wanting substantial suction, rotating mops and automatic dock care together. Need cleaning to happen while you work beside it? The noise figure makes that a less comfortable fit. Your cleaning routine should leave room for your own routine, too.