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Comparing 3 robot vacuums

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

Green is the best of these 3, also when they share the lead.

iRobot Roomba Combo j5 × Best on 1 fact Roborock Q7 L5 × Best on 4 facts Roborock S8 × Best on 4 facts
Most important facts
Lowest price – $139Roborock (brand store) –
Score not in our ranking 4.1 not in our ranking
Customer rating – – ★ 4.9 · 17 reviews
Tests – Vacuum Wars –
Suction power higher is better – 8,000 Pa best 6,000 Pa
Runtime per charge longer is better 75 min 180 min best 180 min best
Climbs thresholds up to higher is better 0.6 in (16 mm) 0.8 in (20 mm) best 0.8 in (20 mm) best
Robot height lower is better 3.4 in (8.6 cm) best 3.9 in (9.9 cm) 3.8 in (9.7 cm)
Mop lift on carpet higher is better no no 0.2 in (5 mm) best
Navigation not judged camera LiDAR turret LiDAR turret
Rank
Rank – rank 4 of 13 without a station –
Mopping
Mop type same on all flat or vibrating pad flat or vibrating pad flat or vibrating pad
Automatic mop detach no (assumed) no (assumed) –
Washes the mop – no –
Hot-air drying – no –
Station
Station same on all charging dock only charging dock only charging dock only
Plumbing hookup – no –
Brush and obstacles
Anti-tangle brush no (assumed) yes (best) yes (best)
Obstacle avoidance AI camera – 3D sensor (structured light)
Climbing system for high thresholds no (assumed) no (assumed) –
Noise and age
Noise while cleaning not judged – 65 dB 68.5 dB
On the market since August 2023 January 2025 March 2023
Suction and brushes
Extending side brush no (assumed) no (assumed) –
Dirt detection yes – –
Suitable for pet hair – no –
Mopping
Mop extends to the edges no (assumed) no (assumed) –
Mop refreshed while mopping no (assumed) no (assumed) –
Water tank in the robot 210 ml 270 ml 300 ml
Dock
Empties the dust bin – no –
Dries the mop – no –
Dispenses detergent – no –
Navigation and obstacles
Camera on board obstacle camera – –
Stair-edge sensors – yes –
Robot
Robot diameter 13.3 in (33.8 cm) 12.8 in (32.5 cm) 13.9 in (35.3 cm)
Robot weight 7.5 lb (3.4 kg) 7.3 lb (3.3 kg) –
Dust bin in the robot 210 ml 400 ml 400 ml
Battery
Battery capacity 2,210 mAh 3,200 mAh 5,200 mAh
Charging time – 4 h –
Smart features and warranty
Matter no (assumed) no (assumed) –
Voice assistants Alexa, Google Assistant, Siri Alexa, Google Assistant –
Warranty 1 year 2 years –
Home Assistant same on all official integration official integration official integration
Scheduled runs – yes –

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.

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