Dreame has released its latest robot vacuum and mop combo, the Dreame L40 Ultra, designed to enhance cleaning efficiency with advanced technologies while offering features tailored to pet owners and large homes.
The Dreame L40 Ultra provides advanced cleaning with up to a month of hands-free operation, achieving perfect debris pick-up in tests. It empties into a 60-day bin, refills water for 30 days, and cleans and dries its mop pad after each session. With Intelligent PowerDetect technologies like DirtDetect and StainDetect, it targets hidden dirt and stains, adjusting to floor types. NeverStuck technology and 360° LiDAR enable precise obstacle navigation, and it lifts the mop pad over carpets. See additional info
Price as of June 4, 2025
Auto Empty Station: Self Empties Debris | Washes Mop Pad | Washes Mop Pad with Hot Water | Dries Mop Pad | Dries Mop Pad with Heated Air| Self Cleaning | Dirty Water Sensor
Mopping: Lifts Mop Pads on Carpets | Extending Mop Pad for Hard to Reach Areas | Can Leave Pads At Base while Vacuuming
Hardware: Auto Extending Side Brush for Hard to Reach Areas | 22mm Threshold Crossing | Removes Hair from Brush Roll
Performance: Carpet Boost Settings
Mapping / Navigation: Multi Level Maps | Virtual Barriers and No Go Zones
Obstacle Avoidance: 100 Objects Recognized
Pet Features: Live Video Monitoring
| Scores | Dreame L40 | Average Robot Vacuum Tested |
|---|---|---|
| Vacuum Wars Overall | 3.72 | 2.80 |
| Features | 4.20 | 3.63 |
| Mopping Performance | 3.30 | 2.73 |
| Obstacle Avoidance | 4.38 | 3.44 |
| Pet | 4.32 | 2.87 |
| Navigation | 4.14 | 3.00 |
| Battery | 4.06 | 2.27 |
| Performance | 3.97 | 3.59 |
| Official Battery Life: 194 Minutes | Navigation Type: Spinning Lidar |
| Official Suction Power: 11000 Pa | Dust Bin Size: 350ml |
| Obstacle Avoidance Type: Structured Light, Single Camera, & Crossed Infrared beams | Objects Recognized: 100 |
| Multi Level Maps: Y | Virtual Barriers: Y |
| Detergent Capacity: Unknown | Disposable Bag: 3.2L |
Key Features
The L40 Ultra introduces the SideReach technology, which extends a side brush to efficiently clean wall corners and around furniture legs. In addition, the robot incorporates OmniDirt detection and MopExtend RoboSwing technologies to detect stubborn messes and clean tight spaces like under furniture and in corners.
High Suction Power
With 11,000Pa suction and five customizable levels, the L40 Ultra is built to tackle a variety of floor surfaces. This marks an increase over its predecessor, the Dreame L20, which offers 7,000Pa of suction power.
Enhanced Maintenance and App Control
The L40 Ultra offers an auto-maintenance system, including a mop cleaning function that uses 149°F hot water to wash both the mop and the washboard simultaneously, helping to reduce stains and unpleasant odors. Users can customize this feature with four different temperature settings directly through the Dreamehome app.
The app also allows for smart navigation customization, including setting pet zones, adjusting mopping levels, and controlling cleaning modes. The L40 Ultra uses a combination of 3D structured light, a built-in camera, and LED lights to navigate, with the added benefit of voice command control.
Battery Life
Additionally, it operates with a 5,200mAh battery that Dreame says will provide up to 194 minutes of cleaning on a single charge. The device covers up to 181m² (1,948ft²), making it suitable for larger homes. It also offers 30% faster charging and the option to schedule charging during off-peak hours to optimize energy use.
If Vacuum Wars reviews this product we will make our findings available in the Robot Vacuum Reviews area of this website. Best rated models may also qualify for a position in our Best Robot Vacuums list.
