Dreame X40 Ultra
The Dreame X40 Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Overview
The Dreame X40 Ultra from Dreame is built for dependable daily floor care. It offers 7,000Pa of suction, LiDAR + AI navigation, built-in mopping, a self-emptying dock, automatic mop washing and hot-air drying, a 5,200 mAh battery, and a 400 ml dustbin.
Setup is fast through the companion app, and its All-in-one dock handles the routine so you can keep floors clean with minimal effort.
In-depth review
Dreame X40 Ultra at a glance
As one of the more notable entries in the Robot Vacuums segment, Dreame X40 Ultra continues to impress. First introduced in 2024, it is now a mature, well-documented product. Below we cover everything from specifications to troubleshooting.
To sum it up, The Dreame X40 Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Setting up the Dreame X40 Ultra
Setting up the Dreame X40 Ultra takes only a few minutes. Unbox it, follow the quick-start guide, and you are ready. If you run into any snags, the troubleshooting section below has you covered. After setup, Dreame X40 Ultra needs very little attention.
Design and build quality
In terms of build quality, the Dreame X40 Ultra holds up well to regular use. The fit and finish are a step above many rivals. For most owners, the unit is simple to set up and use. There is little to complain about in normal operation.
What the Dreame X40 Ultra offers
Under the hood, the Dreame X40 Ultra is defined by these figures.
- Suction power: 7300 Pa
- The Navigation: LiDAR + AI
- Dock type: All-in-one
- The Battery: 5200 mAh
- Dustbin: 400 ml
- The Water tank: 300 ml
- Mopping: true
- The Self-emptying: true
- Mop washing: true
- The Hot air drying: true
Taken together, these details tell you most of what you need to know about the Dreame X40 Ultra.
Real-world performance
In real-world use, the Dreame X40 Ultra performs reliably and consistently. It copes well with the demands of regular use. Output is steady, and it keeps working without drama. It is not perfect, of course. Under extreme conditions, you will notice its boundaries. For the typical owner, though, this is rarely a concern.
Parts, filters, and accessories
Like any machine, the Dreame X40 Ultra will eventually need new parts.
We have documented 133 parts compatible with the Dreame X40 Ultra, including filters, brushes, and other consumables.
- Dreame L10s Ultra Filter (filter) — part #DRE-L10SULTRA-FI
- The Dreame L10s Ultra Left side brush (part) — part #DRE-L10SULTRA-SI
- Dreame L10s Ultra Right side brush (part) — part #DRE-L10SULTRA-SI
- The Dreame L10s Ultra Mop Pad (part) — part #MOP-DREAME-L10S-ULTRA
- Dreame L10s Ultra Side brush set (part) — part #DRE-L10SULTRA-SI
- The Dreame L10s Ultra Mop pad (4-pack) (part) — part #DRE-L10SULTRA-MO
- Dreame L20 Ultra Replacement Battery (battery) — part #BAT-DREAME-L20-ULTRA
- The Dreame L20 Ultra Main Brush Roller (part) — part #ROL-DREAME-L20-ULTRA
- Dreame L10s Pro Ultra Filter (filter) — part #DRE-L10SPROULTRA-FI
- The Dreame L10s Pro Ultra Left side brush (part) — part #DRE-L10SPROULTRA-SI
- Dreame L10s Pro Ultra Right side brush (part) — part #DRE-L10SPROULTRA-SI
- The Dreame L10s Pro Ultra Side brush set (part) — part #DRE-L10SPROULTRA-SI
- Dreame L10s Pro Ultra Main Brush Roller (part) — part #ROL-DREAME-L10S-PRO-ULTRA
- The Dreame L10s Pro Ultra Mop pad (4-pack) (part) — part #DRE-L10SPROULTRA-MO
- Dreame L20 Ultra Filter (filter) — part #DRE-L20ULTRA-FI
- The Dreame L20 Ultra Left side brush (part) — part #DRE-L20ULTRA-SI
- Dreame L20 Ultra Right side brush (part) — part #DRE-L20ULTRA-SI
- The Dreame L20 Ultra Side brush set (part) — part #DRE-L20ULTRA-SI
- Dreame L10s Pro Ultra Mop Pad (part) — part #MOP-DREAME-L10S-PRO-ULTRA
- The Dreame L20 Ultra Mop pad (4-pack) (part) — part #DRE-L20ULTRA-MO
- Dreame L30 Ultra Filter (filter) — part #DRE-L30ULTRA-FI
- The Dreame L30 Ultra Left side brush (part) — part #DRE-L30ULTRA-SI
- Dreame L30 Ultra Right side brush (part) — part #DRE-L30ULTRA-SI
- The Dreame L30 Ultra Side brush set (part) — part #DRE-L30ULTRA-SI
- Dreame L30 Ultra Mop pad (4-pack) (part) — part #DRE-L30ULTRA-MO
- The Dreame L40 Ultra Filter (filter) — part #DRE-L40ULTRA-FI
- Dreame L40 Ultra Left side brush (part) — part #DRE-L40ULTRA-SI
- The Dreame L40 Ultra Right side brush (part) — part #DRE-L40ULTRA-SI
- Dreame L20 Ultra Mop Pad (part) — part #MOP-DREAME-L20-ULTRA
- The Dreame L30 Ultra Main Brush Roller (part) — part #ROL-DREAME-L30-ULTRA
- Dreame L30 Ultra Mop Pad (part) — part #MOP-DREAME-L30-ULTRA
- The Dreame L40 Ultra Side brush set (part) — part #DRE-L40ULTRA-SI
- Dreame L40 Ultra Mop pad (4-pack) (part) — part #DRE-L40ULTRA-MO
- The Dreame L50 Filter (filter) — part #DRE-L50-FI
- Dreame L50 Left side brush (part) — part #DRE-L50-SI
- The Dreame L50 Right side brush (part) — part #DRE-L50-SI
- Dreame L50 Side brush set (part) — part #DRE-L50-SI
- The Dreame L50 Mop pad (4-pack) (part) — part #DRE-L50-MO
- Dreame L40 Ultra Main Brush Roller (part) — part #ROL-DREAME-L40-ULTRA
- The Dreame L40 Ultra Mop Pad (part) — part #MOP-DREAME-L40-ULTRA
- Dreame L50 Replacement Battery (battery) — part #BAT-DREAME-L50
- The Dreame L50 Main Brush Roller (part) — part #ROL-DREAME-L50
- Dreame L50 Mop Pad (part) — part #MOP-DREAME-L50
- The Dreame L60 Filter (filter) — part #DRE-L60-FI
- Dreame L60 Left side brush (part) — part #DRE-L60-SI
- The Dreame L60 Right side brush (part) — part #DRE-L60-SI
- Dreame L60 Side brush set (part) — part #DRE-L60-SI
- The Dreame L60 Mop pad (4-pack) (part) — part #DRE-L60-MO
- Dreame X10 Filter (filter) — part #DRE-X10-FI
- The Dreame X10 Left side brush (part) — part #DRE-X10-SI
- Dreame X10 Right side brush (part) — part #DRE-X10-SI
- The Dreame X10 Side brush set (part) — part #DRE-X10-SI
- Dreame X10 Mop pad (4-pack) (part) — part #DRE-X10-MO
- The Dreame L60 Main Brush Roller (part) — part #ROL-DREAME-L60
- Dreame L60 Mop Pad (part) — part #MOP-DREAME-L60
- The Dreame X10 Replacement Battery (battery) — part #BAT-DREAME-X10
- Dreame X10 Main Brush Roller (part) — part #ROL-DREAME-X10
- The Dreame X10 Mop Pad (part) — part #MOP-DREAME-X10
- Dreame X20 Filter (filter) — part #DRE-X20-FI
- The Dreame X20 Left side brush (part) — part #DRE-X20-SI
- Dreame X20 Right side brush (part) — part #DRE-X20-SI
- The Dreame X20 Side brush set (part) — part #DRE-X20-SI
- Dreame X20 Mop pad (4-pack) (part) — part #DRE-X20-MO
- The Dreame X20 Ultra Filter (filter) — part #DRE-X20ULTRA-FI
- Dreame X20 Ultra Left side brush (part) — part #DRE-X20ULTRA-SI
- The Dreame X20 Ultra Right side brush (part) — part #DRE-X20ULTRA-SI
- Dreame X20 Ultra Side brush set (part) — part #DRE-X20ULTRA-SI
- The Dreame X20 Ultra Mop pad (4-pack) (part) — part #DRE-X20ULTRA-MO
- Dreame X20 Main Brush Roller (part) — part #ROL-DREAME-X20
- The Dreame X20 Mop Pad (part) — part #MOP-DREAME-X20
- Dreame X20 Ultra Replacement Battery (battery) — part #BAT-DREAME-X20-ULTRA
- The Dreame X20 Ultra Main Brush Roller (part) — part #ROL-DREAME-X20-ULTRA
- Dreame X20 Ultra Mop Pad (part) — part #MOP-DREAME-X20-ULTRA
- The Dreame X30 Filter (filter) — part #DRE-X30-FI
- Dreame X30 Left side brush (part) — part #DRE-X30-SI
- The Dreame X30 Right side brush (part) — part #DRE-X30-SI
- Dreame X30 Side brush set (part) — part #DRE-X30-SI
- The Dreame X30 Mop pad (4-pack) (part) — part #DRE-X30-MO
- Dreame X30 Ultra Filter (filter) — part #DRE-X30ULTRA-FI
- The Dreame X30 Ultra Left side brush (part) — part #DRE-X30ULTRA-SI
- Dreame X30 Ultra Right side brush (part) — part #DRE-X30ULTRA-SI
- The Dreame X30 Ultra Side brush set (part) — part #DRE-X30ULTRA-SI
- Dreame X30 Replacement Battery (battery) — part #BAT-DREAME-X30
- The Dreame X30 Mop Pad (part) — part #MOP-DREAME-X30
- Dreame X30 Ultra Main Brush Roller (part) — part #ROL-DREAME-X30-ULTRA
- The Dreame X30 Ultra Mop Pad (part) — part #MOP-DREAME-X30-ULTRA
- Dreame X30 Ultra Mop pad (4-pack) (part) — part #DRE-X30ULTRA-MO
- The Dreame X40 Filter (filter) — part #DRE-X40-FI
- Dreame X40 Left side brush (part) — part #DRE-X40-SI
- The Dreame X40 Right side brush (part) — part #DRE-X40-SI
- Dreame X40 Side brush set (part) — part #DRE-X40-SI
- The Dreame X40 Mop pad (4-pack) (part) — part #DRE-X40-MO
- Dreame X40 Ultra Filter (filter) — part #DRE-X40ULTRA-FI
- The Dreame X40 Ultra Left side brush (part) — part #DRE-X40ULTRA-SI
- Dreame X40 Ultra Right side brush (part) — part #DRE-X40ULTRA-SI
- The Dreame X40 Ultra Brush guard (part) — part #DRE-X40ULTRA-BR
- Dreame X40 Ultra Side brush set (part) — part #DRE-X40ULTRA-SI
- The Dreame X40 Ultra Cable organizer (accessory) — part #DRE-X40ULTRA-CA
- Dreame X40 Ultra Cleaning tool (accessory) — part #DRE-X40ULTRA-MA
- The Dreame X40 Ultra Charging cable (accessory) — part #DRE-X40ULTRA-CH
- Dreame X40 Replacement Battery (battery) — part #BAT-DREAME-X40
- The Dreame X40 Main Brush Roller (part) — part #ROL-DREAME-X40
- Dreame X40 Mop Pad (part) — part #MOP-DREAME-X40
- The Dreame X40 Ultra Main Brush Roller (part) — part #ROL-DREAME-X40-ULTRA
- Dreame X40 Ultra Remote control (part) — part #DRE-X40ULTRA-RE
- The Dreame X40 Ultra Mop pad (4-pack) (part) — part #DRE-X40ULTRA-MO
- Dreame X40 Ultra Dock base pad (accessory) — part #DRE-X40ULTRA-DO
- The Dreame X40 Ultra Drive wheels (part) — part #DRE-X40ULTRA-WH
- Dreame X50 Filter (filter) — part #DRE-X50-FI
- The Dreame X50 Left side brush (part) — part #DRE-X50-SI
- Dreame X50 Right side brush (part) — part #DRE-X50-SI
- The Dreame X50 Side brush set (part) — part #DRE-X50-SI
- Dreame X50 Mop pad (4-pack) (part) — part #DRE-X50-MO
- The Dreame X40 Ultra Replacement Battery (battery) — part #BAT-DREAME-X40-ULTRA
- Dreame X40 Ultra HEPA Filter (filter) — part #FIL-DREAME-X40-ULTRA
- The Dreame X40 Ultra Mop Pad (part) — part #MOP-DREAME-X40-ULTRA
- Dreame X40 Ultra Dust Bag (consumable) — part #DBG-DREAME-X40-ULTRA
- The Dreame X40 Ultra Water Tank Filter (filter) — part #WFL-DREAME-X40-ULTRA
- Dreame X40 Ultra Dock Filter (filter) — part #DFL-DREAME-X40-ULTRA
- The Dreame X50 Replacement Battery (battery) — part #BAT-DREAME-X50
- Dreame X50 Main Brush Roller (part) — part #ROL-DREAME-X50
- The Dreame X50 Mop Pad (part) — part #MOP-DREAME-X50
- Dreame X20 Replacement Battery (battery) — part #BAT-DREAME-X20
- The Dreame L10s Ultra Replacement Battery (battery) — part #BAT-DREAME-L10S-ULTRA
- Dreame L10s Ultra Main Brush Roller (part) — part #ROL-DREAME-L10S-ULTRA
- The Dreame L10s Pro Ultra Replacement Battery (battery) — part #BAT-DREAME-L10S-PRO-ULTRA
- Dreame L30 Ultra Replacement Battery (battery) — part #BAT-DREAME-L30-ULTRA
- The Dreame L40 Ultra Replacement Battery (battery) — part #BAT-DREAME-L40-ULTRA
- Dreame L60 Replacement Battery (battery) — part #BAT-DREAME-L60
- The Dreame X30 Main Brush Roller (part) — part #ROL-DREAME-X30
- Dreame X30 Ultra Replacement Battery (battery) — part #BAT-DREAME-X30-ULTRA
- The Dreame X40 Ultra Side Brush (part) — part #SBR-DREAME-X40-ULTRA
- Dreame X40 Ultra Floor Cleaning Solution (consumable) — part #SOL-DREAME-X40-ULTRA
Most of these parts are easy to swap out, which keeps the Dreame X40 Ultra performing like new.
Keeping the Dreame X40 Ultra in good shape
Dreame X40 Ultra rewards owners who keep up with basic upkeep. Cleaning the key components on a regular schedule is the single best way to avoid problems. Replacing consumables as they wear prevents small issues from becoming big ones. With reasonable care, the Dreame X40 Ultra should give years of service. The guides above will help you keep it in top condition.
Troubleshooting the Dreame X40 Ultra
The most frequently reported problems with the Dreame X40 Ultra are listed here.
Error error-4
The robot stops or reports the main brush is stuck. Hair or debris is likely wrapped around the roller.
To resolve this:
- Clear the main brush
- If the roller is worn or damaged, replace it with a genuine part.
The Error 11 issue
Wheel error — the robot may be stuck. One of the wheels is blocked, preventing the robot from navigating.
Most owners fix it by:
- Inspect both wheels
Error 12
Robot cannot start or the wheel is stuck. The main brush or wheels may be jammed.
The fix is usually:
- Turn the robot over and remove hair or debris wrapped around the brush and wheels.
- Restart the robot
The Mop pad error issue
The mop pad is not attached or detected. The pad may be missing or mis-installed.
To resolve this:
- Re-attach the mop pad so it clicks into place, then restart.
Error error-20
The dock failed to empty the dustbin. The dust bag may be full or the dock suction blocked.
Most owners fix it by:
- Check the dust bag
- Inspect the suction port on the dock for blockages and clear them.
Lidar / navigation error
The robot cannot build a map or is lost. The lidar tower may be blocked or dirty.
The fix is usually:
- Clean the lidar tower
- Power-cycle the robot and try again.
The Dust bag full issue
The dock dust bag is full and needs replacement.
To resolve this:
- Replace the dust bag
Error error-14
The robot does not charge on the dock. Charging contacts or the battery may be faulty.
Most owners fix it by:
- Wipe the charging contacts on the robot and dock with a dry cloth.
- Replace the battery
Error 6 — side brush blocked
The side brush is entangled with hair or debris, reducing cleaning performance.
The fix is usually:
- Remove and clean the side brush to remove hair and debris.
- Replace the side brush
The Side brush error issue
The side brush is not spinning. It may be jammed or the screw may have loosened.
To resolve this:
- Place the robot on a flat, level surface and restart.
- Check for obstacles
Error error-9
The dustbin is full or the air path is blocked, reducing suction.
Most owners fix it by:
- Empty the dustbin and check for blockages in the suction path.
- Clean the filter
When these steps do not help, consider replacing the affected component.
What you get for the price
For the money, the Dreame X40 Ultra gives you a lot. What you get is a trustworthy, well-constructed device, without paying a premium for brand name alone. Add in cheap consumables and simple upkeep, and the total cost of ownership is attractive. Most owners would say the Dreame X40 Ultra is worth every penny.
Pros and cons
It is worth being honest about the Dreame X40 Ultra's trade-offs. Its clear strengths are that it is straightforward, capable, and fairly priced. Where it falls short, it will not wow you with cutting-edge extras. For most people, the good clearly outweighs the bad. It is a dependable option that rarely disappoints.
Who should buy the Dreame X40 Ultra
This model suits buyers who value reliability and straightforward operation. It is less ideal for those who need the very latest features or maximum performance. For that audience, the Dreame X40 Ultra is a sensible buy. It covers the essentials well without unnecessary frills.
Is the Dreame X40 Ultra right for you?
If you are weighing the Dreame X40 Ultra, it helps to think about a few things. It is a strong fit for most typical needs, with a balance of features and cost that most buyers appreciate.
It competes with Dreame X40, the Dreame X50, Roborock S8 Pro Ultra, the Dreame L20 Ultra, Roborock S8 Pro Ultra and the Roborock S8 MaxV Ultra, so check the alternatives before deciding.
Alternatives to consider
There are plenty of other models in the Robot Vacuums space. Your needs may point you toward a different choice. It is always worth comparing a few candidates before you commit.
Models most often compared with the Dreame X40 Ultra are Dreame X40, the Dreame X50, Roborock S8 Pro Ultra, the Dreame L20 Ultra, Roborock S8 Pro Ultra and the Roborock S8 MaxV Ultra, each with its own strengths and trade-offs.
Ultimately, the Dreame X40 Ultra stacks up well against its rivals. Its combination of price, features, and reliability is hard to beat.
Frequently asked questions
Is the Dreame X40 Ultra worth buying?
In most cases, it is. Dreame X40 Ultra offers a strong balance of price, performance, and reliability.
What is the lifespan of the Dreame X40 Ultra?
Looked after properly, it will serve you for a long time. Keeping up with parts replacement makes the biggest difference.
Where do I get consumables for the Dreame X40 Ultra?
The parts section above is the best place to begin. They are generally in stock from major retailers.
Why does the Dreame X40 Ultra show Main brush error?
For Main brush error, start with Remove the main brush guard and clear hair or debris wrapped around the roller. Or Replace the main brush.
How do I fix Error 11 on the Dreame X40 Ultra?
The typical fix for Error 11 is Turn the robot over and clear hair or debris from both drive wheels.
What should I do about Error 12?
Error 12 is usually resolved by Clear the brush and wheels or Hold the power button for 10 seconds to force a restart, then place it on the dock.
How do I fix Mop pad error on the Dreame X40 Ultra?
The typical fix for Mop pad error is Re-attach the mop pad.
Why does the Dreame X40 Ultra show Self-empty failed?
For Self-empty failed, start with Open the dock, check the dust bag is seated and not full, and replace if needed. Or Clear the dock suction port.
How do I fix Lidar / navigation error on the Dreame X40 Ultra?
The typical fix for Lidar / navigation error is Wipe the lidar sensor tower with a dry cloth to remove dust. Or Restart the robot.
What should I do about Dust bag full?
Dust bag full is usually resolved by Open the dock and install a fresh dust bag.
How do I fix Battery cannot charge on the Dreame X40 Ultra?
For Battery cannot charge, start with Clean the charging contacts or If the battery no longer holds a charge, install a replacement battery.
Why does the Dreame X40 Ultra show Error 6 — side brush blocked?
The typical fix for Error 6 — side brush blocked is Clean the side brush or If the brush is worn, replace it with a genuine one.
How do I fix Side brush error on the Dreame X40 Ultra?
Side brush error is usually resolved by Place on a level surface or Remove any obstacles under the robot that may be lifting a wheel.
What should I do about Error 9 — dustbin full or clogged?
For Error 9 — dustbin full or clogged, start with Empty the dustbin or Remove and clean the filter to restore airflow.
Is there a filter for the Dreame X40 Ultra?
A compatible filter is the Dreame L10s Ultra Filter, and it is easy to source.
What part does the Dreame X40 Ultra use?
You will need the Dreame L10s Ultra Left side brush, available as a replacement part.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L10s Ultra Right side brush, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L10s Ultra Mop Pad, and it is easy to source.
What part does the Dreame X40 Ultra use?
You will need the Dreame L10s Ultra Side brush set, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L10s Ultra Mop pad (4-pack), which is listed in our parts database.
Which battery fits the Dreame X40 Ultra?
A compatible battery is the Dreame L20 Ultra Replacement Battery, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame L20 Ultra Main Brush Roller, available as a replacement part.
What filter does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L10s Pro Ultra Filter, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
You will need the Dreame L10s Pro Ultra Left side brush, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L10s Pro Ultra Right side brush, available as a replacement part.
What part does the Dreame X40 Ultra use?
You will need the Dreame L10s Pro Ultra Side brush set, and it is easy to source.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L10s Pro Ultra Main Brush Roller, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L10s Pro Ultra Mop pad (4-pack), and it is easy to source.
What filter does the Dreame X40 Ultra use?
You will need the Dreame L20 Ultra Filter, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L20 Ultra Left side brush, and it is easy to source.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L20 Ultra Right side brush, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame L20 Ultra Side brush set, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L10s Pro Ultra Mop Pad, available as a replacement part.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L20 Ultra Mop pad (4-pack), which is listed in our parts database.
Is there a filter for the Dreame X40 Ultra?
You will need the Dreame L30 Ultra Filter, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L30 Ultra Left side brush, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L30 Ultra Right side brush, available as a replacement part.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L30 Ultra Side brush set, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame L30 Ultra Mop pad (4-pack), and it is easy to source.
What filter does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L40 Ultra Filter, available as a replacement part.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L40 Ultra Left side brush, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
You will need the Dreame L40 Ultra Right side brush, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L20 Ultra Mop Pad, and it is easy to source.
What part does the Dreame X40 Ultra use?
A compatible part is the Dreame L30 Ultra Main Brush Roller, available as a replacement part.
Which part fits the Dreame X40 Ultra?
You will need the Dreame L30 Ultra Mop Pad, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L40 Ultra Side brush set, available as a replacement part.
What part does the Dreame X40 Ultra use?
A compatible part is the Dreame L40 Ultra Mop pad (4-pack), and it is easy to source.
Is there a filter for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L50 Filter, available as a replacement part.
Which part fits the Dreame X40 Ultra?
You will need the Dreame L50 Left side brush, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L50 Right side brush, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L50 Side brush set, available as a replacement part.
What part does the Dreame X40 Ultra use?
You will need the Dreame L50 Mop pad (4-pack), which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L40 Ultra Main Brush Roller, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L40 Ultra Mop Pad, available as a replacement part.
What battery does the Dreame X40 Ultra use?
You will need the Dreame L50 Replacement Battery, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame L50 Main Brush Roller, available as a replacement part.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L50 Mop Pad, and it is easy to source.
Is there a filter for the Dreame X40 Ultra?
A compatible filter is the Dreame L60 Filter, available as a replacement part.
What part does the Dreame X40 Ultra use?
You will need the Dreame L60 Left side brush, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L60 Right side brush, and it is easy to source.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L60 Side brush set, available as a replacement part.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L60 Mop pad (4-pack), and it is easy to source.
Is there a filter for the Dreame X40 Ultra?
You will need the Dreame X10 Filter, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X10 Left side brush, and it is easy to source.
What part does the Dreame X40 Ultra use?
A compatible part is the Dreame X10 Right side brush, available as a replacement part.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X10 Side brush set, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame X10 Mop pad (4-pack), and it is easy to source.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame L60 Main Brush Roller, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame L60 Mop Pad, available as a replacement part.
Which battery fits the Dreame X40 Ultra?
A compatible battery is the Dreame X10 Replacement Battery, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame X10 Main Brush Roller, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X10 Mop Pad, and it is easy to source.
Which filter fits the Dreame X40 Ultra?
A compatible filter is the Dreame X20 Filter, available as a replacement part.
What part does the Dreame X40 Ultra use?
You will need the Dreame X20 Left side brush, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X20 Right side brush, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame X20 Side brush set, and it is easy to source.
What part does the Dreame X40 Ultra use?
You will need the Dreame X20 Mop pad (4-pack), available as a replacement part.
Which filter fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X20 Ultra Filter, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X20 Ultra Left side brush, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
You will need the Dreame X20 Ultra Right side brush, available as a replacement part.
Which part fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X20 Ultra Side brush set, and it is easy to source.
What part does the Dreame X40 Ultra use?
You will need the Dreame X20 Ultra Mop pad (4-pack), available as a replacement part.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X20 Main Brush Roller, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X20 Mop Pad, and it is easy to source.
Which battery fits the Dreame X40 Ultra?
You will need the Dreame X20 Ultra Replacement Battery, available as a replacement part.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X20 Ultra Main Brush Roller, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X20 Ultra Mop Pad, and it is easy to source.
Which filter fits the Dreame X40 Ultra?
You will need the Dreame X30 Filter, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X30 Left side brush, available as a replacement part.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X30 Right side brush, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X30 Side brush set, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X30 Mop pad (4-pack), available as a replacement part.
Which filter fits the Dreame X40 Ultra?
You will need the Dreame X30 Ultra Filter, and it is easy to source.
What part does the Dreame X40 Ultra use?
A compatible part is the Dreame X30 Ultra Left side brush, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X30 Ultra Right side brush, available as a replacement part.
What part does the Dreame X40 Ultra use?
A compatible part is the Dreame X30 Ultra Side brush set, which is listed in our parts database.
Which battery fits the Dreame X40 Ultra?
You will need the Dreame X30 Replacement Battery, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X30 Mop Pad, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X30 Ultra Main Brush Roller, available as a replacement part.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X30 Ultra Mop Pad, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X30 Ultra Mop pad (4-pack), and it is easy to source.
Is there a filter for the Dreame X40 Ultra?
You will need the Dreame X40 Filter, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame X40 Left side brush, available as a replacement part.
What part does the Dreame X40 Ultra use?
You will need the Dreame X40 Right side brush, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X40 Side brush set, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X40 Mop pad (4-pack), available as a replacement part.
What filter does the Dreame X40 Ultra use?
A compatible filter is the Dreame X40 Ultra Filter, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X40 Ultra Left side brush, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Right side brush, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X40 Ultra Brush guard, which is listed in our parts database.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Side brush set, and it is easy to source.
Is there an accessory for the Dreame X40 Ultra?
A compatible accessory is the Dreame X40 Ultra Cable organizer, available as a replacement part.
Which accessory fits the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Cleaning tool, which is listed in our parts database.
What accessory does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Charging cable, available as a replacement part.
Is there a battery for the Dreame X40 Ultra?
A compatible battery is the Dreame X40 Replacement Battery, and it is easy to source.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X40 Main Brush Roller, available as a replacement part.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Mop Pad, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Main Brush Roller, and it is easy to source.
Which part fits the Dreame X40 Ultra?
A compatible part is the Dreame X40 Ultra Remote control, available as a replacement part.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Mop pad (4-pack), which is listed in our parts database.
Is there an accessory for the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Dock base pad, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Drive wheels, which is listed in our parts database.
Which filter fits the Dreame X40 Ultra?
A compatible filter is the Dreame X50 Filter, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
You will need the Dreame X50 Left side brush, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X50 Right side brush, which is listed in our parts database.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X50 Side brush set, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
A compatible part is the Dreame X50 Mop pad (4-pack), available as a replacement part.
Which battery fits the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X40 Ultra Replacement Battery, which is listed in our parts database.
What filter does the Dreame X40 Ultra use?
You will need the Dreame X40 Ultra HEPA Filter, and it is easy to source.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X40 Ultra Mop Pad, which is listed in our parts database.
Which consumable fits the Dreame X40 Ultra?
A compatible consumable is the Dreame X40 Ultra Dust Bag, available as a replacement part.
Is there a filter for the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Water Tank Filter, and it is easy to source.
What filter does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Dock Filter, which is listed in our parts database.
Is there a battery for the Dreame X40 Ultra?
A compatible battery is the Dreame X50 Replacement Battery, and it is easy to source.
Which part fits the Dreame X40 Ultra?
You will need the Dreame X50 Main Brush Roller, available as a replacement part.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X50 Mop Pad, which is listed in our parts database.
What battery does the Dreame X40 Ultra use?
A compatible battery is the Dreame X20 Replacement Battery, and it is easy to source.
Is there a battery for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L10s Ultra Replacement Battery, available as a replacement part.
Which part fits the Dreame X40 Ultra?
You will need the Dreame L10s Ultra Main Brush Roller, which is listed in our parts database.
What battery does the Dreame X40 Ultra use?
A compatible battery is the Dreame L10s Pro Ultra Replacement Battery, and it is easy to source.
Is there a battery for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame L30 Ultra Replacement Battery, available as a replacement part.
Which battery fits the Dreame X40 Ultra?
A compatible battery is the Dreame L40 Ultra Replacement Battery, and it is easy to source.
What battery does the Dreame X40 Ultra use?
You will need the Dreame L60 Replacement Battery, which is listed in our parts database.
Is there a part for the Dreame X40 Ultra?
The Dreame X40 Ultra uses the Dreame X30 Main Brush Roller, available as a replacement part.
Which battery fits the Dreame X40 Ultra?
A compatible battery is the Dreame X30 Ultra Replacement Battery, and it is easy to source.
What part does the Dreame X40 Ultra use?
The Dreame X40 Ultra uses the Dreame X40 Ultra Side Brush, which is listed in our parts database.
Is there a consumable for the Dreame X40 Ultra?
You will need the Dreame X40 Ultra Floor Cleaning Solution, available as a replacement part.
What Suction power should I expect?
The Dreame X40 Ultra has a Suction power of 7300 Pa.
How much Navigation does the Dreame X40 Ultra have?
Expect a Navigation of LiDAR + AI.
What is the Dock type of the Dreame X40 Ultra?
Its Dock type is All-in-one.
How much Battery does the Dreame X40 Ultra have?
The Dreame X40 Ultra has a Battery of 5200 mAh.
What Dustbin should I expect?
Expect a Dustbin of 400 ml.
What is the Water tank of the Dreame X40 Ultra?
Its Water tank is 300 ml.
How much Mopping does the Dreame X40 Ultra have?
The Dreame X40 Ultra has a Mopping of true.
What is the Self-emptying of the Dreame X40 Ultra?
Expect a Self-emptying of true.
What Mop washing should I expect?
Its Mop washing is true.
What is the Hot air drying of the Dreame X40 Ultra?
Expect a Hot air drying of true.
The bottom line
All things considered, the Dreame X40 Ultra is a solid machine that most owners are happy with. If you are upgrading or buying new, the Dreame X40 Ultra deserves a spot on your shortlist. Use the parts and troubleshooting guides above to keep it running for years. To recap, the Dreame X40 Ultra is a dependable, well-rounded Robot Vacuums. It covers the essentials, holds up over time, and is easy to maintain. If you are still on the fence, the specs, parts, and fixes above give you everything you need to decide. For the vast majority of buyers, the Dreame X40 Ultra is a decision you will not regret.
Specifications
Replacement parts & consumables
Dreame L10s Ultra Side brush set
PartReplacement side brush set (2-pack) for the Dreame L10s Ultra.
Dreame L20 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame L20 Ultra.
Dreame L10s Pro Ultra Left side brush
PartReplacement left side brush for the Dreame L10s Pro Ultra.
Dreame L10s Pro Ultra Right side brush
PartReplacement right side brush for the Dreame L10s Pro Ultra.
Dreame L10s Pro Ultra Side brush set
PartReplacement side brush set (2-pack) for the Dreame L10s Pro Ultra.
Dreame L10s Pro Ultra Main Brush Roller
PartReplacement main brush roller for the Dreame L10s Pro Ultra.
Dreame L10s Pro Ultra Mop pad (4-pack)
PartReplacement mop pads (4-pack) for the Dreame L10s Pro Ultra.
Dreame X20 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame X20 Ultra.
Dreame X40 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame X40 Ultra.
Dreame L10s Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame L10s Ultra.
Dreame L10s Pro Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame L10s Pro Ultra.
Dreame L30 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame L30 Ultra.
Dreame L40 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame L40 Ultra.
Dreame X30 Ultra Replacement Battery
BatteryGenuine replacement lithium-ion battery for the Dreame X30 Ultra.
Dreame X40 Ultra Floor Cleaning Solution
ConsumableRobot vacuum floor cleaning solution (500ml) for the Dreame X40 Ultra.
Errors & troubleshooting
Main brush error
The robot stops or reports the main brush is stuck. Hair or debris is likely wrapped around the roller.
Error 11
Wheel error — the robot may be stuck. One of the wheels is blocked, preventing the robot from navigating.
Error 12
Robot cannot start or the wheel is stuck. The main brush or wheels may be jammed.
Mop pad error
The mop pad is not attached or detected. The pad may be missing or mis-installed.
Self-empty failed
The dock failed to empty the dustbin. The dust bag may be full or the dock suction blocked.
Lidar / navigation error
The robot cannot build a map or is lost. The lidar tower may be blocked or dirty.
Dust bag full
The dock dust bag is full and needs replacement.
Battery cannot charge
The robot does not charge on the dock. Charging contacts or the battery may be faulty.
Error 6 — side brush blocked
The side brush is entangled with hair or debris, reducing cleaning performance.
Side brush error
The side brush is not spinning. It may be jammed or the screw may have loosened.
Error 9 — dustbin full or clogged
The dustbin is full or the air path is blocked, reducing suction.
Compatibility
No compatibility information listed yet for this model.
Alternatives
Dreame X50
SuccessorThe Dreame X50 is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Roborock S8 Pro Ultra
ComparisonThe Roborock S8 Pro Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Dreame L20 Ultra
AlternativeThe Dreame L20 Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Roborock S8 Pro Ultra
AlternativeThe Roborock S8 Pro Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.
Roborock S8 MaxV Ultra
AlternativeThe Roborock S8 MaxV Ultra is a premium flagship robot vacuum that combines powerful 7,000Pa suction with mopping and navigates with LiDAR + AI.