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 Dreame D20 Plus rates 3.8 among vacuum and mop ones.
Dreame D20 Plus
For carpeted homes on a budget that want long runs and a self-emptying dock; skip it if you need real mopping or obstacle avoidance.
Amazon $309.99$309.99
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 | Dreame D20 Plus |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Cleaning 30% | 37 measured 80% of sand from carpet, 75.5% of pet hair, some hair tangled (0.8) | 91 measured 93% of sand from carpet, 91% of pet hair, no hair tangled |
| Value 25% | 50 no current price (neutral score used) | 73 $310 |
| Dock 20% | 90 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent | 44 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). |
Dreame D20 Plus
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 93% | 91% | 0 | 2,761 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 | Dreame D20 Plus | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 12,000 Pa | 13,000 Pa |
| Main brush | Liftable rubber brush (TriCut Brush 2.0 sold separately) | HyperStream Detangling DuoBrush (bristled rubber brush plus TPU rubber brush) |
| Dustbin | 300 mL | 500 mL |
| Extending side brush | Yes | - |
| 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 | - |
| Extending mop | Yes | - |
| Water tank | 80 mL | 350 mL |
| Dock | ||
| Dock | Washes mop + empties | Self-empty |
| Self-empties | Yes | Yes |
| Dust bag | 3.2 L | 5 L |
| Washes mop | Yes | No |
| Hot-water wash | Yes | No |
| Hot-air drying | Yes | No |
| Detergent dosing | Yes | No |
| 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 | - |
| Climbs thresholds | 22 mm | - |
| Voice assistants | Alexa, Siri, Google Home | Alexa, Siri, Google Home |
| Build | ||
| Height | - | 3.8 in (96.5 mm) |
| Battery | 6,400 mAh | 5,200 mAh |
| Run time | - | Up to 4 h 45 min |
| Weight | - | 7.7 lb (3.5 kg) |
| Warranty | 3 years | 3 years |
| Released | 2024-04 | - |