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Comparing 2 robot vacuums

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

  1. ×
    • Highest score
    • Best on the most facts
    Dreame D20 Air Plus

    On the market since December 2025

    $269Dreame (brand store)

    5.8 Best on 3 facts
  2. ×
    Roborock S8+

    On the market since March 2023

    No price today

    not in our ranking Best on 1 fact

Prices updated at 4:45 AM ETTest results read on Sep 9 to Oct 17

Side by side

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

Dreame D20 Air Plus × Best on 3 facts Roborock S8+ × Best on 1 fact
The facts that decide most
Lowest price $269Dreame (brand store) –
Score 5.8 not in our ranking
Suction power higher is better 20,000 Pa best 6,000 Pa
Runtime per charge longer is better 150 min 180 min best
Climbs thresholds up to higher is better same on both 0.8 in (20 mm) 0.8 in (20 mm)
Robot height lower is better 3.7 in (9.5 cm) best 3.8 in (9.7 cm)
Mop lift on carpet higher is better – 0.2 in (5 mm)
Dust bag lasts longer is better up to 120 days best up to 49 days
Navigation same on both LiDAR turret LiDAR turret
Tests, rank and ratings
Tests Just A Dad Approved Vacuum Wars
Rank rank 4 of 26 with a self-emptying station –
Customer rating – –
Mopping
Mop type same on both flat or vibrating pad flat or vibrating pad
Automatic mop detach no (assumed) –
Washes the mop no –
Hot-air drying no –
Station
Station same on both self-emptying station self-emptying station
Plumbing hookup no (assumed) –
Brush and obstacles
Anti-tangle brush same on both yes yes
Obstacle avoidance none 3D sensor (structured light)
Climbing system for high thresholds no (assumed) –
Noise and age
Noise not judged 76 dB 68.5 dB
On the market since December 2025 March 2023
Suction and brushes
Extending side brush no (assumed) –
Carpet detection detects carpet –
Suitable for pet hair yes –
Dirt detection yes –
Mopping
Mop extends to the edges no (assumed) –
Mop refreshed while mopping no (assumed) –
Water tank in the robot 280 ml 300 ml
Dock
Empties the dust bin same on both yes yes
Bagless same on both no no
Dust bag capacity 4 l 2.5 l
Dries the mop no –
Dispenses detergent no (assumed) –
Clean water tank 4 l –
Navigation and obstacles
No-go zones zones in the app –
Stair-edge sensors yes –
Robot
Robot diameter 12.8 in (32.5 cm) 13.9 in (35.3 cm)
Robot weight 5.7 lb (2.59 kg) –
Dust bin in the robot 220 ml 350 ml
Battery
Battery capacity 3,200 mAh 5,200 mAh
Charging time 4.5 h –
Smart features and warranty
Matter no (assumed) –
Voice assistants Alexa, Google Assistant, Siri –
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.

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