Dreame X40 Ultra
Dreame’s 2024 flagship, now hard to find new; worth it only at a deep discount, as the X50 and L-series robots clean better.
AmazonThe Dreame X40 Ultra rates 3.8 among self-cleaning dock robot vacuums; the Roborock Q7 M5+ rates 3.4 among vacuum and mop ones.
Roborock Q7 M5+
For budget buyers who mostly want hands-off vacuuming with a self-empty dock and LiDAR mapping.
Amazon $249.98$249.98
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (self-cleaning dock and vacuum and mop), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Dreame X40 Ultra | Roborock Q7 M5+ |
|---|---|---|
| Overall rating | 3.8/5 | 3.4/5 |
| Cleaning 30% | 37 measured 80% of sand from carpet, 75.5% of pet hair, some hair tangled (0.8) | 30 measured 75% of sand from carpet, 78.5% of pet hair, some hair tangled (0.4) |
| Value 25% | 50 no current price (neutral score used) | 86 $250 |
| Dock 20% | 90 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent | 62 Self-empties the bin |
| Navigation 15% | 100 LiDAR + camera | 65 LiDAR |
| Mopping 10% | 86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges | 10 Static pad |
Independent tests
Dreame X40 Ultra
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 80% | 75.5% | 0.8 | 1,287 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Roborock Q7 M5+
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 75% | 78.5% | 0.4 | 1,370 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Specifications
| Dreame X40 Ultra | Roborock Q7 M5+ | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 12,000 Pa | 10,000 Pa |
| Main brush | Liftable rubber brush (TriCut Brush 2.0 sold separately) | JawScrapers anti-tangle brush |
| Dustbin | 300 mL | 200 mL |
| Extending side brush | Yes | No |
| Mopping | ||
| Mop | Dual spinning pads, leaves its mop at the dock for carpet, extends to edges | Static pad |
| Mop lift | 10.5 mm | - |
| Leaves mop at dock | Yes | No |
| Extending mop | Yes | No |
| Water tank | 80 mL | 280 mL |
| Dock | ||
| Dock | Washes mop + empties | Self-empty |
| Self-empties | Yes | Yes |
| Dust bag | 3.2 L | 2.7 L |
| Washes mop | Yes | No |
| Hot-water wash | Yes | - |
| Hot-air drying | Yes | - |
| Detergent dosing | Yes | - |
| Water hookup option | No | - |
| Clean water tank | 4.5 L | - |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR |
| Obstacle avoidance | RGB camera plus 3D structured light, recognises 120 object types | None claimed beyond bump sensors |
| Climbs thresholds | 22 mm | 20 mm |
| Matter | - | No |
| Voice assistants | Alexa, Siri, Google Home | - |
| Build | ||
| Height | - | 3.9 in (99 mm) |
| Retracting LiDAR | - | No |
| Battery | 6,400 mAh | 3,200 mAh |
| Run time | - | Up to 3 h |
| Warranty | 3 years | 1 year |
| Released | 2024-04 | 2025-07 |