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 and the Eufy Omni C20 are evenly matched, rated 3.8 and 3.7. The Dreame X40 Ultra leads on navigation and mopping.
Eufy Omni C20
The cheapest way into a dock that washes the mops, for small homes with low furniture. Its weak carpet cleaning and short range rule it out for bigger or carpeted homes.
Amazon $379.99$379.99
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.
Which should you buy?
- Choose the Dreame X40 Ultra for navigation (LiDAR + camera vs LiDAR) and mopping (Dual spinning pads, leaves its mop at the dock for carpet, extends to edges vs Dual spinning pads, lifts 10.4 mm).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dreame X40 Ultra | Eufy Omni C20 |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Cleaning 30% | 37 measured 80% of sand from carpet, 75.5% of pet hair, some hair tangled (0.8) | 36 measured 75% of sand from carpet, 96% of pet hair, some hair tangled (0.5) |
| Value 25% | 50 no current price (neutral score used) | 95 $380 |
| Dock 20% | 90 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent | 68 Self-empties the bin, washes the mop |
| Navigation 15% | 100 LiDAR + camera | 65 LiDAR |
| Mopping 10% | 86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges | 61 Dual spinning pads, lifts 10.4 mm |
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). |
Eufy Omni C20
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 75% | 96% | 0.5 | 546 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 | Eufy Omni C20 | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 12,000 Pa | 7,000 Pa |
| Main brush | Liftable rubber brush (TriCut Brush 2.0 sold separately) | Rolling brush with Pro-Detangle Comb |
| Dustbin | 300 mL | 250 mL |
| Extending side brush | Yes | No |
| Mopping | ||
| Mop | Dual spinning pads, leaves its mop at the dock for carpet, extends to edges | Dual spinning pads, lifts 10.4 mm |
| Mop lift | 10.5 mm | 10.4 mm |
| Leaves mop at dock | Yes | No |
| Extending mop | Yes | No |
| Water tank | 80 mL | - |
| Dock | ||
| Dock | Washes mop + empties | Washes mop + empties |
| Self-empties | Yes | Yes |
| Dust bag | 3.2 L | 3.1 L |
| Washes mop | Yes | Yes |
| Hot-water wash | Yes | No |
| Hot-air drying | Yes | No |
| Detergent dosing | Yes | - |
| Water hookup option | No | No |
| Clean water tank | 4.5 L | 2.5 L |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR |
| Obstacle avoidance | RGB camera plus 3D structured light, recognises 120 object types | Infrared and point laser for larger obstacles only |
| Climbs thresholds | 22 mm | 18 mm |
| Matter | - | No |
| Voice assistants | Alexa, Siri, Google Home | Alexa, Google Assistant |
| Build | ||
| Height | - | 3.3 in (85 mm) |
| Retracting LiDAR | - | No |
| Battery | 6,400 mAh | 3,200 mAh |
| Run time | - | Up to 1 h 41 min |
| Weight | - | 7.3 lb (3.3 kg) |
| Warranty | 3 years | 1 year |
| Released | 2024-04 | 2024-11 |