- Suction
- 25,000 Pa claimed
- Navigation
- LDS LiDAR
- Mopping
- Dual spinning mops
- Runtime
- Up to 231 min in quiet
Two quick taps and get the right robot for them, with today's price.
Dreame L40 Ultra Gen 2
Strong mopping all in one dock bot, but poor obstacle avoidance
Researched by Riley Hart · updated Oct 30, 2026
Is the Dreame L40 Ultra Gen 2 worth it? A capable mopper with a full dock for about $500 to $570, but a step back from the original L40 Ultra in obstacle avoidance. It costs $570 as of Oct 31, 2026, and 2 independent reviewers tested it.
A capable mopper with a full dock for about $500 to $570, but a step back from the original L40 Ultra in obstacle avoidance. Vacuum Wars saw it avoid only 2 of 24 objects and wrap 67% of long hair. Pick it only for tidy homes without long hair; Vacuum Wars itself points pet owners to the L40s Ultra.
Best for: tidy hard floor homes that want strong mopping. Skip if: you have pets with long hair or a cluttered floor.
Specs
- Suction
- 25,000 Pa claimed (Dreame); Vacuum Wars measured 0.79 kPa bench suction against a 0.99 kPa average, and Vacuum Chef measured 11.5 CFM airflow against a 9.0 average
- Navigation
- LDS LiDAR, up to 4 maps (Dreame); Vacuum Wars measured 0.84 m2 per minute, faster than its 0.72 average
- Obstacle avoidance
- 3D structured light only; the RGB camera of the original L40 Ultra was removed (Dreame, Vacuum Wars); Vacuum Wars saw it avoid 2 of 24 objects and Vacuum Chef scored 30%
- Mopping
- Dual spinning mops, 10.5 mm lift, 4 cm extension, no auto removal (Dreame); Vacuum Wars scored dried stains 144 against a 108 average
- Self empty
- Yes, 3.2 L dust bag, up to 100 days (Dreame)
- Dock features
- Auto empty, mop wash, hot air drying, auto water refill, 4.5 L clean and 4.0 L dirty tanks; detergent dispenser sold separately for $39.99 (Dreame). Dreame lists hot water mop cleaning, but Vacuum Wars says Gen 2 washes with room temperature water
- Runtime
- Up to 231 min in quiet vacuum mode, up to 1,679 sq ft (Dreame); Vacuum Wars estimated about 1,290 sq ft per charge
- Dustbin
- 250 ml robot bin plus 3.2 L dock bag (Dreame)
3 year cost of ownership
- Robot
- $570
- Total
- $610
Dust bag and pad prices are not listed on the product page.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No Dreame robot recall in the CPSC database as of Oct 31, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active
- Warranty
- ● 3 years (Dreame US store)
Parts and refills for the L40 Ultra Gen 2
- Dreame detergent dispenser for L40 Ultra Gen 2
one time accessory, $39.99 on the product page on 2026-10-30, needed for auto detergent (source: Dreame US store) - Shop on Amazon →
- Dreame TriCut brush
optional anti tangle brush, $49.99 on the product page; no interval given (source: Dreame US store) - Shop on Amazon →
Check the part number matches your model before you order. Affiliate links.
Price history
Tracked dailyTracking started Oct 31, 2026 at $570.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
- Amazon
- See price →
- Dreame US store
- $570 →
Affiliate links. We may earn a commission. It never changes our score. Disclosure
Pros
- Strong stain removal in Vacuum Wars testing
- 90% carpet sand removal
- Efficient, fast navigation
- Long claimed runtime
- Extending mop and side brush
Cons
- Avoided only 2 of 24 obstacles
- 67% long hair wrap
- Weak pet hair pickup
- Detergent dispenser costs extra
- No camera or auto mop removal
What independent reviewers found
- Dried stain score 144 (108 average), 90% carpet sand removal, but 69% pet hair pickup, 67% hair wrap and only 2 of 24 obstacles avoided. Estimated about 1,290 sq ft per charge.
- Vacuum Wars · 3.11 Vacuum Wars stars
- Measured 11.5 CFM airflow, 90% coffee, 60% sand and 98% cat litter pickup, 73 dB at max and a 30% obstacle avoidance score against a 66% average. Called it a rebalancing rather than an upgrade.
- Vacuum Chef
Spec history
Checked dailyNo spec changes since we started tracking on Oct 31, 2026.
Email me when L40 Ultra Gen 2 gets cheaper
We check prices every morning. One email per real drop. Unsubscribe anytime.
Own one? Tell us how it holds up
We email owners 3 quick questions now and every 6 months, then show the results here.
Questions buyers ask
What changed from the original L40 Ultra?
Suction rose from 11,000 Pa to 25,000 Pa, but Vacuum Wars says the camera, built in detergent dosing and hot water mop washing were dropped.
Does it avoid socks and cables?
Poorly. Vacuum Wars saw it avoid 2 of 24 test objects, so pick up the floor first.
Does it add floor cleaner automatically?
Only with the $39.99 detergent dispenser, sold separately on the Dreame store.
Guides and rankings with the Dreame L40 Ultra Gen 2
Compare the Dreame L40 Ultra Gen 2
Alternatives in Floors
See all ranked →We check prices every morning and compare them with each model's 2026 low. One email when real deals land, plus our 5 minute Friday roundup. Unsubscribe anytime.