Dreame L40 Ultra Review: Worth It? (October 2026)
The Dreame L40 Ultra Gen 2 suits homes that want automated vacuuming and mop care, with a dock that empties dust, washes mop pads and dries them with hot air. Its cleaning solution dispenser is optional and sold separately.
On this page (7 sections)
- What does the Dreame L40 Ultra review find?
- What does the L40 Ultra dock do, and what still needs care?
- How does the L40 Ultra handle carpets and mopping?
- How much cleaning time and connectivity does it offer?
- Should you choose the L40 Ultra Gen 2 or L40s Ultra?
- What should you check before buying the Dreame L40 Ultra?
- Is the Dreame L40 Ultra worth considering?
The Dreame L40 Ultra Gen 2 is a robot vacuum and mop for homes that want regular floor cleaning with automated dock care. Its dock empties dust, washes mop pads and dries them with hot air, though you still need to maintain the robot and dock.
The main trade-offs are the space and upkeep a dock needs, plus the separate cost and compatibility checks for an optional detergent module. This Dreame L40 Ultra review compares those details with the L40s Ultra and explains what to consider before choosing one.
What does the Dreame L40 Ultra review find?
The L40 Ultra Gen 2 suits mixed hard floors and carpets where automated mop care and several carpet settings matter. It has 25,000Pa suction, an extendable brush and mop, and a dock that empties dust, washes mops and dries them with hot air.
dreame L40 Ultra Gen 2 Robot Vacuum: Best for automated floor care
- 25,000Pa suction
- Self-cleaning dock
- Extendable brush and mop
- Smart Pathfinder and 3DAdapt obstacle avoidance
A vacuum and mop with an all-in-one dock and carpet care modes. The auto-detergent dispenser is optional and sold separately.
Pros
- Five suction levels
- Four carpet care modes
- App and voice control
- Extendable brush and mop
Cons
- Optional detergent module costs extra
- 2.4GHz Wi-Fi only and specified for USA use
Its five suction levels let you adjust cleaning, while four carpet modes cover avoidance, boost, intensive cleaning and mop lifting. Smart Pathfinder mapping and 3DAdapt obstacle avoidance help it navigate rooms.
This setup automates several chores, but you still need to check the dock, replenish supplies and clear hair or debris from accessible parts as directed in the care instructions.
Who should consider this Dreame robot vacuum?
Consider it if you want one robot to vacuum and mop, and you have a place for its base station. It may also suit a home where carpet settings help manage rooms with both rugs and hard flooring.
Look elsewhere if you want a small device without a dock or app setup. If your main priority is mopping, compare options in our guide to the Best Robot Vacuum For Mopping.
What does the L40 Ultra dock do, and what still needs care?
The all-in-one dock empties dust and washes and dries mop pads. You should still plan for periodic dock and robot care.
Choose a location with enough room for the dock and access to its parts. Follow Dreame's care instructions for emptying, refilling and cleaning; the routine depends on how often the robot runs and what it collects.
The Gen 2 supports an optional auto-detergent module, sold separately. If a compatible tank needs replacing, the IRUOLYNN module is designed to snap into automatic detergent dispenser systems, including the L40 Ultra Gen 2.
IRUOLYNN Cleaning Solution Tank Module Compatible: Best for replacing a detergent tank
- Compatible with L40 Ultra Gen 2
- Tool-free snap-in replacement
- Designed for automatic detergent dispenser systems
A replacement cleaning solution tank module for compatible Dreame dock systems. Check your exact robot and dock model before choosing it.
Pros
- Designed for a range of Dreame and Mova systems
- Simple removal and snap-in installation
- No tools required
Cons
- It is a replacement module, not a complete robot vacuum
- Compatibility varies by model
Confirm your robot and dock model compatibility before choosing a replacement. This is a tank component, not a robot or full dock, and it won't add detergent dispensing to a setup without the matching system.
The Best Dreame Robot Vacuums and Mops guide can help you compare this model with other Dreame combinations. For a different product in the brand's range, see our Dreame D20 Pro Plus Review.
How does the L40 Ultra handle carpets and mopping?
The L40 Ultra Gen 2 offers four carpet care modes for mixed-floor needs. Choose a setting based on whether a rug should be avoided, vacuumed more deeply or kept dry while the robot mops nearby floors.
| Carpet mode | When it may help |
|---|---|
| Carpet avoidance | Use when you want the robot to stay off carpet |
| Suction boost | Use for extra suction on carpet |
| Intensive carpet cleaning | Use when you want the robot to clean carpet more thoroughly |
| Mop lifting | Raises the mop by 0.41 in when moving over carpet |
Mop lifting is different from avoiding carpet altogether. If a rug must stay dry, choose avoidance or check the app settings for your floor layout.
The extendable brush and mop are designed to reach corners and under furniture. Actual reach depends on room layout and available clearance, so keep small items and loose cords out of the robot's route.
Mopping also means caring for damp pads and the parts that handle water. The dock washes and dries the pads, but you should still check them and the dock for buildup.
How much cleaning time and connectivity does it offer?
The L40 Ultra Gen 2 is specified for up to 231 minutes and 1,679 sq ft in Quiet Mode, with a 5,200mAh battery. These figures describe one mode and may differ from what you get in your home.
Higher suction, mop washing, room layout and obstacle avoidance can affect the area cleaned in one run. Use room maps and schedules to divide larger homes into manageable jobs if needed.
The robot supports app and voice control, including Alexa, Siri and Google Home. It supports 2.4GHz Wi-Fi and is specified for USA use only, so check your network and region before buying.
If app control is a concern, compare another brand's setup in our Best Eufy Robot Vacuum and Mop Combos guide. For a plain-language explanation of the cleaning cycle, read How Does A Robot Vacuum Cleaner Work?.
Should you choose the L40 Ultra Gen 2 or L40s Ultra?
Choose the L40 Ultra Gen 2 for higher stated suction and its 0.41 in mop-lifting mode, or the L40s Ultra if obstacle clearance and its carpet strategies fit your floors better. Both combine vacuuming and mopping with an all-in-one dock, but their features differ.
| Detail | L40 Ultra Gen 2 | L40s Ultra |
|---|---|---|
| Suction | 25,000Pa | 19,000Pa |
| Battery runtime | Up to 231 minutes in Quiet Mode | Up to 220 minutes |
| Carpet care | Avoidance, boost, intensive cleaning, 0.41 in mop lifting | Removable or liftable mops, avoidance, intensive cleaning, suction boost |
| Obstacle handling | Smart Pathfinder and 3DAdapt | Crosses obstacles up to 1.57 in |
| Dock care | Self-emptying, mop washing and hot air drying | Auto-emptying, hot water mop rinsing and drying |
The L40s Ultra dock rinses mop pads with 167°F water, dries them and refills solution and water for mopping. Its app offers several carpet strategies, and the robot is designed to cross thresholds and steps up to 1.57 in.
DREAME L40s Ultra Robot Vacuum and Mop: Best for threshold clearance
- 19,000Pa suction
- Up to 1.57 in obstacle crossing
- Hot water mop washing
- Auto-emptying
An alternative with a stated threshold-crossing height, mop washing and drying, and carpet care options in the app.
Pros
- Multiple carpet care strategies
- Mop pads wash with 167°F water and dry
- Designed to cross thresholds up to 1.57 in
Cons
- 2.4GHz Wi-Fi only and specified for USA use
- Dock and robot need room for placement and care
The L40s Ultra may suit you if raised door tracks or thresholds are a regular obstacle. The L40 Ultra Gen 2 may suit you better if you value its higher stated suction and carpet avoidance, boost and intensive-cleaning choices.
Don't choose on suction alone. Consider your floor mix, home obstacles, dock placement and the care routine you'll follow.
What should you check before buying the Dreame L40 Ultra?
Check the dock space, Wi-Fi band and detergent accessory needs before choosing the L40 Ultra Gen 2. These details can matter as much as its cleaning modes at home.
Measure a suitable spot near a power outlet and leave access to the dock for routine care. Keep the route between the robot and dock clear, and check whether rugs, cables and small objects need to be moved or secured.
Confirm that your Wi-Fi network supports 2.4GHz and that the USA-use restriction fits your location. If you want automatic detergent dispensing, budget for the separate module and verify compatibility with your exact setup.
Robot mapping and obstacle avoidance don't remove the need to prepare floors. Pick up loose cords, small toys and items that could obstruct a cleaning run.
Is the Dreame L40 Ultra worth considering?
The Dreame L40 Ultra Gen 2 is worth considering if you want vacuuming, mopping and dock-based pad care in one system. It suits homes where scheduled cleaning and selectable carpet modes can reduce routine floor work.
For another brand’s robot mop, read the Eufy E25 robot vacuum review.
Choose it if the dock fits your space and you're comfortable maintaining the robot and dock. Choose the L40s Ultra if its stated threshold clearance better matches your floors, or compare another brand if you want a different app and mop setup.
For another brand, compare Eureka robot vacuum options.
Our score weighs specs, features and buyer feedback against what you're shopping for. Pick the Gen 2 for its higher stated suction and carpet modes, or compare alternatives when dock upkeep, connectivity or floor layout is the deciding factor.
Frequently asked questions
Does the Dreame L40 Ultra Gen 2 include detergent dispensing?
The L40 Ultra Gen 2 supports an optional auto-detergent dispenser module, which is sold separately. You can activate the auto-dispensing function in the DreameHome app after adding the module.
Check compatibility with your exact robot and dock before buying a replacement tank or accessory.
How does the L40 Ultra Gen 2 handle carpets?
The L40 Ultra Gen 2 offers four carpet modes: carpet avoidance, suction boost, intensive carpet cleaning and 0.41 in mop lifting. Choose a mode based on whether you want the robot to avoid rugs, clean them more strongly or keep wet mop pads raised.
Does the Dreame L40 Ultra need regular dock maintenance?
Yes. The dock automates dust emptying, mop washing and hot air drying, but those features still leave routine care to you.
Check and refill supplies as needed, clean the dock and robot parts, and follow Dreame's care instructions so residue and debris don't build up.
What is the difference between the L40 Ultra Gen 2 and L40s Ultra?
The L40 Ultra Gen 2 is specified with 25,000Pa suction and up to 231 minutes in Quiet Mode, while the L40s Ultra has 19,000Pa suction and up to 220 minutes. The L40s Ultra specifies crossing obstacles up to 1.57 in; compare its carpet options and dock needs with your home.
