Dreame X40 Ultra review
The X40 on its tank dock: 12,000 Pa, a side brush and pads that both extend, pads that lift 10.5 mm and detach, an RGB camera, a 70 °C wash and 208 minutes a charge, but no size or weight.
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Review method: Specification analysis
Our verdict
The X40 Ultra is the generation before the X50, still sold new in Poland, and on paper it reaches further than its 12,000 Pa suggests. The side brush extends and lifts 10 mm; the pads swing out on RoboSwing, lift 10.5 mm and come off for carpet. An RGB camera with structured light recognises 120 object types and pets, and the dock washes at up to 70 °C, sends the pads back for a second wash when its multispectral sensor sees dirt, dries with hot air, refills water and solution and empties into a 3.2 l bag for 75 days. 6,400 mAh give 208 minutes and 194 m² of quiet mixed cleaning. The gaps: no Dreame page prints its size, weight, warranty, noise or charging time, sills stop at 22 mm, and the brush is plain rubber, with the TriCut anti-tangle brush sold separately. The Complete version adds only spare parts.
Pros
- The side brush extends and lifts; the pads extend, lift 10.5 mm and detach
- RGB camera with structured light, 120 object types and pet recognition
- The dock washes at up to 70 °C, re-mops on its dirt sensor, dries and refills water and solution
- 6,400 mAh for 208 minutes and 194 m²
Cons
- No size, weight, warranty, noise or charging time on any Dreame page
- 12,000 Pa and a plain rubber brush; the TriCut brush is sold separately
- 22 mm sills and no legs
- A bag lasts 75 days
Best for
- Flats with hard floors and low sills
- Buyers who want camera recognition and a washing dock more than suction
Not recommended for
- Anyone who needs the robot's height to check that it fits under furniture
- Homes with thresholds over 22 mm
Score breakdown
- Cleaning
- 73 /100
- Navigation
- 73 /100
- Mopping
- 85 /100
- Obstacle Avoidance
- 100 /100
- Automation
- 89 /100
- Ease of Use
- 94 /100
- Reliability
- 64 /100
- Value
- 35 /100
In detail
Suction and brushes
The manufacturer rates the suction at 12,000 Pa. That is less than most of the 105 robot vacuums we list. The main brush is the rubber type, with one side brush. On carpet the suction rises automatically. The onboard bin holds 300 ml.
Mopping
Mop system: twin spinning pads. For carpet runs it leaves the mop at the dock. The mop swings out to reach along walls. The onboard water tank holds 80 ml.
Navigation and obstacles
It navigates by LiDAR and avoids obstacles with camera + depth sensor. It climbs thresholds up to 22 mm. That is less than most of the 65 robot vacuums with a published figure. No-go zones can be drawn in the app. It recognises pet waste and steers round it.
The dock
The dock empties the bin, washes and dries the mop and refills the water tank. The dust bag lasts about 75 days.
Battery, charging and noise
One charge runs up to 3 h 28 min. The manufacturer publishes no noise figure.
Specifications
Cleaning
- Suction
- 12,000 Pa
- Brush system
- Rubber
- Side brushes
- 1
- Carpet boost
- Yes
- Dustbin
- 300 ml
- Side brush
- Extends and lifts 10 mm
- Main brush
- Liftable rubber brush; TriCut anti-tangle brush sold separately
Navigation
- Mapping
- LiDAR
- Obstacle avoidance
- Camera + depth sensor
- Saved floor plans
- Not published
- Threshold climb
- 22 mm
Mopping
- Mop type
- Twin spinning pads
- Mop lift
- Detaches for carpet
- Extending mop
- Yes
- Water tank
- 80 ml
Dock
- Self-emptying
- Yes
- Mop washing
- Yes
- Mop wash temperature
- 70 °C
- Mop drying
- Yes
- Water refill
- Yes
- Plumbed drain
- No
- Dust bag interval
- 75 days
- Wash temperature settings
- Four, up to 70 °C
- Dirt detection
- Multispectral colour sensor re-washes the pads and re-mops; 32 wetness levels
- Water tanks
- 4.5 l clean, 4.0 l dirty
- Dust bag
- 3.2 l
- Plumbing kit
- Automatic refill and drain kit sold separately
Software
- No-go zones
- Yes
- Pet waste recognition
- Yes
Power
- Battery
- 6,400 mAh
- Runtime
- 3 h 28 min
- Charging time
- Not published
- Area per charge
- 194 m², quiet vacuum and mop
Connectivity
- Wi-Fi
- Yes
- Bluetooth
- No
- 4G / LTE
- No
- Voice control
- Yes
Physical
- Weight
- Not published
- L × W × H
- Not published
- Noise
- Not published
Support
- Warranty
- Not published
- Released
- Not published
Obstacles
- Recognised object types
- 120
Accessories
- Complete version
- Adds a main brush, two side brushes, 12 pads, three filters, three bags and 1 l of solution
Dreame PL product page (X40 Ultra / X40 Ultra Complete) with the German X40 Ultra Complete page and the German X50 Ultra Complete comparison table for navigation, retrieved 2026-10-19
Where to buy
Prices are read every night from the manufacturers' shops that list the machine, and shown as read. A price no read has confirmed for several days is marked with the day it was last seen. Where a week or more of readings exists, the lowest we recorded in the last 30 days is stated as well. RoboVerdict may earn a commission when you buy through links on our site. This does not affect our rankings. As an Amazon Associate I earn from qualifying purchases.
Read next
In our rankings
Guides that mention it
- Will it fit under the sofa? Robot vacuum heights compared, from 80 to 120 mm
- Robot vacuums and pet hair: suction is the wrong number to shop by
- Robot vacuums and door thresholds: which models climb 2, 3, 4 or 5 cm
- Roller mop or spinning pads: which robot vacuum mop is better?
- Robot vacuum docks explained: self-emptying, mop washing, drying, refill and plumbing
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