Who is the Dreame - X40 Ultra for?
Solid mid-pack robotic vacuum. The 70.7 score lands in B-tier (68–77) — competent across the board, with one or two specs holding it back.
A right buy if pricing matters and the trade-offs the formula penalizes don’t affect how you use the device. Compare it against the A-tier picks first.
Mars Score is computed from 14 measured specs against the transparent formula for the robotic vacuums category. No editorial picks, no paid placement.
Dreame - X40 Ultra: advantages & disadvantages
Measured against every robotic vacuums we track, here is where the Dreame - X40 Ultra pulls ahead.
- ▲Includes Mopping — a feature not every robotic vacuums offers.
- ▲Includes Lidar — a feature not every robotic vacuums offers.
- ▲Includes AI obstacle avoidance — a feature not every robotic vacuums offers.
- ▲Includes Self-empty base — a feature not every robotic vacuums offers.
No spec lands in the bottom quartile of the category normalization window — this product holds up across the weighted axes.
Pros are specs scoring ≥75% of the category normalization range. Cons are ≤35%. Derived from the Mars Score formula — no hand-curated lists.
At a glance
- Suction
- 12000Pa
- Battery life
- 210min
- Dustbin
- 350ml
- Mopping
- true
All specifications
Cleaning
- Suction
- 12000 Pa
- Mopping
- true
- Water tank
- 270 ml
- Dustbin
- 350 ml
- Carpet detection
- true
Navigation
- Lidar
- true
- Camera navigation
- true
- AI obstacle avoidance
- true
- Max climb
- 60 mm
Autonomy
- Battery life
- 210 min
- Self-empty base
- true
- Self-wash mop
- true
- Self-dry mop
- true
- Noise
- 65 dB
Hands-on coverage
Editorial pieces from the vsMars team that cover the Dreame - X40 Ultra.
Best Robot Vacuums in 2026 — Lidar Nav, Self-Empty Bases, Mopping
Roborock and Dreame still lead, with Eufy and iRobot closing on the mid-tier. What to buy by floor type and household.
Roborock S9 MaxV Ultra vs Dreame X40 Ultra — Pet Hair Pickup Lab
Standardized golden retriever hair distribution on three flooring types. Pickup percentage measured by pre/post weigh-in.
Latest from the lab
All lab reports →Popular comparisons featuring the Dreame - X40 Ultra
The 8 closest matchups in the Robotic Vacuums category, sorted by Mars Score proximity — the fights most worth your time.
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Frequently asked
What is the Mars Score for Dreame - X40 Ultra?+
Dreame - X40 Ultra scores 70.7 on the transparent Mars Score formula for robotic vacuums, computed from its published specs against the category's weighted normalization.
What category does Dreame - X40 Ultra belong to?+
Dreame - X40 Ultra is a Dreame robotic vacuum catalogued in the Robotic Vacuums category.
When was Dreame - X40 Ultra released?+
Dreame - X40 Ultra was released on 2024-09-10.
What is the suction of Dreame - X40 Ultra?+
Dreame - X40 Ultra has a suction of 12000 Pa.
What is the battery life of Dreame - X40 Ultra?+
Dreame - X40 Ultra has a battery life of 210 min.
What is the dustbin of Dreame - X40 Ultra?+
Dreame - X40 Ultra has a dustbin of 350 ml.
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