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Comparing 2 robot vacuums

Your shortlist side by side: today’s price, our score and every fact the maker states.

Green is the best of these 2, also when they share the lead.

Lefant M3 × Best on 2 facts Roborock Qrevo CurvX × Best on 6 facts
Most important facts
Lowest price € 271 *Amazon.de best € 753CAPS
Score not in our ranking 7.7
Customer rating – ★ 4.7 · 9 reviews
Tests – Just A Dad Approved Vacuum Wars
Suction power higher is better 12,000 Pa 22,000 Pa best
Runtime per charge longer is better same on both 220 min 220 min
Climbs thresholds up to higher is better 15 mm 30 mm best
Robot height lower is better 9.7 cm 8 cm best
Mop lift on carpet higher is better 9 mm 17 mm best
Dust bag lasts longer is better up to 90 days best up to 65 days
Navigation not judged LiDAR turret retractable LiDAR
Rank
Rank – rank 4 of 79 with an all-in-one station
Mopping
Mop type same on both spinning pads spinning pads
Automatic mop detach same on both no (assumed) no (assumed)
Washes the mop same on both yes yes
Hot-air drying no (assumed) yes (best)
Station
Station same on both all-in-one station all-in-one station
Plumbing hookup same on both no (assumed) no
Brush and obstacles
Anti-tangle brush same on both yes yes
Obstacle avoidance – AI camera
Climbing system for high thresholds no (assumed) yes (best)
Noise and age
Noise while cleaning not judged – 62 dB
On the market since December 2025 May 2025
Suction and brushes
Suitable for pet hair same on both yes yes
Extending side brush – yes
Carpet detection – detects carpet and boosts suction
Dirt detection – yes
Mopping
Mop extends to the edges – yes
Mop refreshed while mopping – no (assumed)
Dock
Empties the dust bin same on both yes yes
Bagless same on both no no (assumed)
Dust bag capacity 3.2 l 2.7 l
Wash temperature 45 °C 80 °C
Dries the mop same on both yes yes
Dispenses detergent yes no
Navigation and obstacles
Double threshold (two steps together) – 40 mm
No-go zones – zones in the app
Camera on board – obstacle camera
Stair-edge sensors – yes
Robot
Robot diameter 32 cm 35.2 cm
Robot weight – 4.42 kg
Dust bin in the robot – 259 ml
Battery
Battery capacity 5,200 mAh 6,400 mAh
Smart features and warranty
Voice assistants Google Assistant Alexa, Google Assistant, Siri
Wi-Fi band 2.4 and 5 GHz –
Matter – yes
Warranty – 2 years
Scheduled runs – yes
Home Assistant – official integration

Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews. * Foreign shop: delivery cost and VAT to the Netherlands estimated.

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