Dreame · Reviewed by Tech Smart Home · Published 2026-04-07
Based on a review by Tech Smart Home (accessed 2026-04-07).
Based on this review alone: buy it if you care about lower uvp price than its predecessor — just accept mop pads cannot be completely left in the station, which is less ideal for sensitive carpets.
The reviewer concludes that the Dreame L50s Pro Ultra is a very good robot vacuum, offering a more attractive price point, significantly higher suction power, and improved 100°C hot water mop cleaning compared to the L40s Pro Ultra. While it technically has a downgraded obstacle detection system, it still performed very well in tests, though the inability to fully detach mop pads at the station is noted as a practical drawback for sensitive carpets. Overall, the reviewer was "absolutely satisfied" with its performance.
This review compares the new Dreame L50s Pro Ultra with its predecessor, the L40s Pro Ultra, examining design, features, and performance. It includes tests for corner cleaning, vacuuming effectiveness on oatmeal, obstacle avoidance, wet mopping, and the upgraded self-cleaning station, providing a detailed comparison between the two models.
The Dreame L50s Pro Ultra is an excellent robot vacuum that delivers great value, offering substantial upgrades over its predecessor at a lower initial price. It excels in corner cleaning with its extendable side brush, consistently removing all debris, and its suction power of 30,000 Pascal is remarkably effective, outperforming the previous model in initial cleaning passes. However, its 10.4 cm height means it cannot clean under all furniture, which can be a significant limitation for some users. If you prioritize thorough edge and corner cleaning, powerful suction, and advanced self-maintenance features, this robot is a strong contender. However, if you need a slimmer robot to navigate low-clearance furniture, you might need to look for alternative options.
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The new Dreame L50s Pro Ultra has an MSRP of 749 Euros, making it 150 Euros cheaper than its predecessor, the L40s Pro Ultra, at its launch.
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The extendable side brush of the L50s Pro Ultra works extremely well for corner cleaning. In a corn kernel test, it successfully collected all five kernels from a corner, performing as effectively as its predecessor.
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Utilizing its LED lighting, the L50s Pro Ultra was tested in the dark and successfully cleaned all corn kernels, demonstrating effective cleaning performance even without ambient light.
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In an oatmeal vacuum test (5g, 2 passes), the L50s Pro Ultra left only 3 flakes after the first round (compared to 9 for the predecessor) and 1 after the second. This indicates significantly improved thoroughness in the initial cleaning pass.
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The Dreame L50s Pro Ultra features a suction power of 30,000 Pascal, which is a significant increase compared to its predecessor's 19,000 Pascal.
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The L50s Pro Ultra lifts its mopping pads by 10.5mm when on carpets. However, unlike the L40s Pro Ultra, it lacks the function to fully detach and leave the pads in the station.
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The wet wiping, especially the edge cleaning, is very effective. The mop pad is actively pressed against the edge, and the robot can 'wiggle' sideways to extend the pads further under obstacles like refrigerators.
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The robot's laser-based navigation is extremely reliable, cleaning room edges first then proceeding in structured parallel paths. It also navigates through tight spaces without issues.
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The L50s Pro Ultra uses a single 3D laser for obstacle detection, a technical downgrade from the L40s Pro Ultra's dual-laser system. Despite this, detection is 'amazingly good' for objects like Funko figures, socks, and cables, but it failed to avoid and ingested a small Lego brick.
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The underside features two counter-rotating brushes, a system designed to prevent hair from tangling, which is a favored feature in Dreame's top models.
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The L50s Pro Ultra can overcome obstacles or steps up to 2.2 cm and double steps up to 4 cm, similar to its predecessor.
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The cleaning station now washes the mopping pads with 100°C hot water, an upgrade from the predecessor's 75°C, ensuring more thorough sanitation.
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The station requires minimal maintenance, primarily cleaning a small filter and occasionally wiping the base plate, as pads are hot-air dried and the base is self-cleaned.
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The station includes a dust bag, a container for cleaning agent (with a starter bottle included), and a generously sized 4-liter dirty water tank.
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The robot has a height of approximately 10.4 cm, which, like its predecessor, prevents it from cleaning under all furniture, a desired area for improvement.
The reviewer demonstrates that the L50s Pro Ultra, with its extendable side brush, effectively cleans corners. It successfully picked up all five corn kernels in a dedicated test, even when repeated in the dark thanks to its LED lighting. It also competently handles flat obstacles like stair railings.
In an oatmeal test (5g), the L50s Pro Ultra left only 3 flakes after the first pass, significantly outperforming the L40s Pro Ultra which left 9. While both models ended with 1 flake after two passes, the new model is noticeably more thorough initially. It also features a robust 30,000 Pa suction power, an increase from the predecessor's 19,000 Pa.
The L50s Pro Ultra can lift its mopping pads by 10.5mm when on carpets to avoid wetting them. However, a notable difference from its predecessor is the inability to fully detach and leave the mop pads in the station, which could be a concern for very sensitive carpets. For efficient carpet vacuuming, the reviewer suggests activating the 'clean carpet first' setting in the app for better navigation and cleaning time.
The reviewer highly praises the wet wiping performance, particularly its effectiveness in edge cleaning. The mop pad is actively pressed against the room's edges, ensuring thorough cleaning. Additionally, the robot can perform a 'side-wiggle' maneuver to extend the mop pads further under furniture like refrigerators, minimizing uncleaned spots.
The laser-based navigation is described as extremely reliable, with the robot cleaning room edges first and then proceeding in structured parallel paths, easily maneuvering through tight areas. For obstacle avoidance, the L50s Pro Ultra uses a single 3D laser (a downgrade from the L40s Pro Ultra's dual-laser system). Despite this, it performed 'amazingly well' detecting and avoiding objects like Funko figures, socks, and cables. However, it did fail to avoid and ingested a small Lego brick, suggesting very small items might still be a challenge.
The cleaning station has been upgraded to wash mop pads with 100°C hot water, a significant improvement over the predecessor's 75°C, enhancing sanitation. It also features hot air drying for the pads and self-cleans its base plate. Maintenance is minimal, mainly requiring occasional cleaning of a small filter and wiping the base. The station includes a dust bag, a cleaning agent container (with a starter bottle), and a large 4-liter dirty water tank.
The reviewer considers the L50s Pro Ultra a very good robot vacuum, offering a launch MSRP 150 Euros cheaper than its predecessor, along with higher suction power (30,000 Pa vs 19,000 Pa) and hotter mop pad washing (100°C vs 75°C). While it loses the ability to fully detach mop pads at the station and has a technically downgraded obstacle detection system, its overall performance, especially corner cleaning, is highly satisfactory. The reviewer was "absolutely satisfied" with the new model.
75/100 source quality
The Dreame L50s Pro Ultra is a new robot vacuum that is notably cheaper than its predecessor, the L40s Pro Ultra. It demonstrates excellent corner cleaning, even in the dark, and shows improved vacuuming performance, particularly in its initial cleaning pass. The robot boasts 30,000 Pa suction power and features effective wet wiping with active pad pressure for thorough edge cleaning. Navigation is reliable, and while its single 3D laser for obstacle detection is a technical downgrade, it performs well for most objects, though tiny items may be ingested. The self-cleaning station has been upgraded to use 100°C hot water for mop washing and requires minimal maintenance.
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