Dreame X40 Ultra vs Roborock S8 MaxV Ultra?

The most debated comparison in owner discussions. Dreame wins on raw suction (12000 vs 10000Pa), edge cleaning (extending brush/mop), and battery life. Roborock wins on app quality, customer support, and overall polish. Most owners recommend Roborock for typical users and Dreame for those who prioritize cleaning performance above all.

Is the extending side brush worth it?

Overwhelmingly yes. It's described as the single biggest innovation in robot vacuum design in years. Corners and wall edges that every other robot misses are finally getting cleaned. The extending mop has the same effect on mopping. Some report occasional debris flinging, but it's minor.

How is Dreame's customer support in the US?

Mixed reviews. Some owners have had fine experiences, but a significant number report slow response times, difficulty getting replacement parts, and language barrier issues. It's improving but still behind Roborock and iRobot. Consider buying from Amazon for easier returns.

Does the 12000Pa suction actually make a difference?

On hard floors, not really — most modern robots clean hard floors well. On carpet, yes. Owners moving from 6000-8000Pa robots consistently report their carpet looks cleaner. Whether that difference justifies the price is personal, but the suction difference is real and measurable.

On balanced mode, comparable to other flagships — noticeable but not disruptive. On max/turbo mode with 12000Pa, it's noticeably louder. Most owners run balanced mode for daily cleans and only use max mode for weekly deep cleans.

Robot Vacuum & Mop

~$600

Dreame

Dreame X40 Ultra

Name: Dreame X40 Ultra
Brand: Dreame
Price: 600 USD
Availability: Discontinued

Dreame's top-tier robot with a class-leading 12000Pa suction, extending side brush for edge cleaning, and hot water mop washing with auto-detergent dispensing.

Approx. price

~$600

Suction

12000 Pa

Navigation

LiDAR + Camera

Best For

Pet owners who want the strongest suction

Discontinued — no longer sold new

The manufacturer has retired this model; remaining listings are typically refurbished or leftover stock at odd prices. We keep the page for owners. Its current replacement is Dreame X50 Ultra.

Specifications

LiDAR + Camera

12000 Pa

210 min

Yes

Auto Mop Washing

Yes

Obstacle Avoidance

Yes

Carpet Detection

Yes

Auto Mop Lifting

Yes

Multi-Floor Mapping

Yes

Type

Robot Vacuum & Mop

Noise Level

66 dB

Dustbin Capacity

300 ml

Water Tank

80 ml

App Control

Yes

Dimensions

13.9 x 13.9 x 4.0 in

Weight

10.1 lbs

Warranty

3 years

Model

X40 Ultra

Highlights

12000Pa SuctionExtending Side BrushAuto Detergent

Pros

✓12000Pa suction is the strongest available — pulls embedded dirt from carpet fibers
✓Extending side brush reaches into corners and along walls other robots miss
✓Hot water mop wash with auto-detergent dispensing is truly hands-free
✓MopExtend technology pushes mop pads beyond the robot body for edge mopping
✓210-minute battery comfortably covers 3000+ sq ft homes

Cons

✗App can be buggy with occasional disconnects and slow map loading
✗Extending brush mechanism is a moving part that could wear over time
✗Slightly taller profile (4 inches) may not fit under some furniture
✗Newer brand with less established US customer service compared to Roborock or iRobot

Owner Insights

The Dreame X40 Ultra generates heated debate in robot-vacuum owner discussions as the most capable robot vacuum on paper. Its 12000Pa suction is genuinely class-leading, and owners moving from other flagships consistently report visibly more dirt pulled from carpets. The extending side brush and MopExtend features are frequently highlighted as solving the two biggest complaints about round robot vacuums — corner cleaning and baseboard mopping.

In real-world use, the X40 Ultra delivers on most of its promises. The edge cleaning is genuinely better than any competitor, with the extending brush reaching into corners that Roborocks and Roombas always miss. The hot water mop washing with auto-detergent dispensing is praised as the most hands-free maintenance experience available. Obstacle avoidance is reliable, though some owners note it's slightly less refined than Roborock's latest cameras.

The trade-offs center on software and support. The Dreame app, while improved, still gets more complaints than Roborock's app. US customer service is a recurring concern — warranty claims and replacement parts are described as slower and more frustrating than dealing with Roborock or iRobot. For tech-savvy buyers who prioritize raw cleaning performance and don't mind occasional app quirks, the X40 Ultra is arguably the best robot vacuum available. For those who value polished software and easy customer support, the Roborock S8 MaxV Ultra is the safer choice.

Pros

+12000Pa suction is genuinely the strongest available — pulls dirt from carpet that other flagships miss
+Extending side brush reaches corners and wall edges that round robots always miss
+MopExtend pushes the mop pad beyond the robot body to clean right up to baseboards
+Auto-detergent dispensing means truly hands-free cleaning for weeks at a time
+210-minute battery handles 3000+ sq ft homes without recharging
+AI obstacle avoidance is very effective — comparable to Roborock's implementation

Cons

−Dreame app can be buggy — occasional disconnects, slow map loading, and UI quirks
−US customer service is less established than Roborock or iRobot — warranty claims can be slow
−At 4 inches tall, it doesn't fit under some couches and beds that slimmer robots can reach
−Some owners report the extending brush occasionally flinging debris rather than sweeping it
−Dock makes a grinding noise during self-empty that's louder than Roborock's