Dreame L40s Ultra vs iRobot Roomba Plus 575 Combo + AutoWash Dock
Researched by Riley Hart · prices checked Nov 4, 2026
As of Nov 4, 2026, the Dreame L40s Ultra costs $500 and the iRobot Roomba Plus 575 Combo + AutoWash Dock costs $500. The Dreame L40s Ultra scores higher in our ranking (8.8 vs 7.6 out of 10). Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the iRobot Roomba Plus 575 Combo + AutoWash Dock for small homes with tight furniture gaps. The Dreame L40s Ultra wins 4 of 7 points we can measure (1 tied).
Who wins, point by point
The Dreame L40s Ultra wins 4 of 7 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| L40s Ultra | iRobot Roomba Plus 575 Combo + AutoWash Dock | Winner | |
|---|---|---|---|
| Price today | $500 | $500 | Tie |
| Suction | 19,000 Pa | 25,000 Pa | iRobot Roomba Plus 575 Combo + AutoWash Dock |
| Runtime per charge | 220 min | 3 h | L40s Ultra |
| Onboard bin | 310 mL | 180 mL | L40s Ultra |
| Climbs thresholds up to | 1.57 in | 1.4 in | L40s Ultra |
| Robot height (fits under furniture) | 3.82 in | 4.2 in | L40s Ultra |
| Release year | 2025 | 2026 | iRobot Roomba Plus 575 Combo + AutoWash Dock |
- You care most about runtime per charge (220 min vs 3 h)
- You care most about onboard bin (310 mL vs 180 mL)
- You care most about climbs thresholds up to (1.57 in vs 1.4 in)
- Best for pet owners with carpet on a budget
- You care most about suction (25,000 Pa vs 19,000 Pa)
- You want the newer model (2026 vs 2025)
- Best for small homes with tight furniture gaps
- Suction
- 19,000 Pa claimed
- Navigation
- LDS LiDAR
- Mopping
- Dual spinning mops
- Runtime
- Up to 220 min in quiet
Strong pet hair cleaner with a full dock at a deep discount
Full Dreame L40s Ultra review, pros and cons →- Suction
- 25,000 Pa
- Navigation
- ClearView Pro LiDAR
- Mopping
- Yes
- Runtime
- About 180 min from
Compact Roomba with AI obstacle avoidance and a hot wash dock
Full iRobot Roomba Plus 575 Combo + AutoWash Dock review, pros and cons →Side by side
| Dreame L40s Ultra | iRobot Roomba Plus 575 Combo + AutoWash Dock | |
|---|---|---|
| Price | $500 | $500 |
| 3 year cost | $500 | $500 |
| Our score | 8.8/10 | 7.6/10 |
| Rank in Floors | #6 | #16 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | n/a |
| Suction | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average | 25,000 Pa with four levels (Android.com.pl); iRobot's US page says 3.5X the Roomba Plus 505 Combo |
| Navigation | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute | ClearView Pro LiDAR with PrecisionVision AI, up to 5 maps, about 9 min to map (iRobot); Netzwelt found it fast and precise |
| Obstacle avoidance | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects | PrecisionVision AI recognizes cords, socks and pet waste (iRobot); Android.com.pl saw it avoid cables, laces and toys, while Netzwelt saw it sometimes drive over cables |
| Mopping | Dual spinning mops, 10.5 mm lift, extend and auto removal (Dreame); Vacuum Wars measured 0.95 g water left and a 259 combined mop score | Yes, DualClean spinning pads at 180 RPM with SmartScrub, a 30 mm edge extension and 10 mm rug lift (iRobot); Netzwelt saw it fail on dried ketchup |
| Self empty | Yes, 3.2 L dust bag, up to 100 days (Dreame) | Yes, AllergenLock bag that lasts up to 3 months (iRobot); Android.com.pl lists a 2.5 L bag |
| Dock features | Auto empty, 167 F (75 C) hot water mop wash, hot air drying, self cleaning washboard, auto detergent and water refill, 4.5 L clean and 4.0 L dirty tanks; water hookup kit sold separately (Dreame) | Empties, washes pads at 167°F, dries at 113°F and refills with StayClean solution for up to 40 days (iRobot US page); Android.com.pl's European unit listed 60°C washing and 3.6 L clean and 3.2 L dirty tanks |
| Runtime | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge | About 180 min from a 5,200 mAh battery (Android.com.pl); iRobot's US page lists no runtime |
| Dustbin | 310 ml robot bin plus 3.2 L dock bag (Dreame) | 180 ml robot bin and 80 ml water tank (Android.com.pl) |
| Height | 3.82 in (Dreame) | 4.2 in on iRobot's US page; Netzwelt and Android.com.pl list 8.3 cm (3.3 in), so check before buying for low furniture |
| Pet hair | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap | Netzwelt and Android.com.pl both saw long hair wrap the main and side brushes |
| App | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video | Roomba Home app with schedules, rooms and no go zones; Alexa, Siri and Google Assistant (iRobot); Android.com.pl saw frequent offline drops on 2.4 GHz Wi-Fi |
| Threshold | 1.57 in double layer and 0.87 in single steps (Dreame) | Up to 35 mm (iRobot); Android.com.pl's text says 30 mm |
| Noise | Vacuum Chef measured 78 dB at max suction | n/a |
| Weight | n/a | 9.44 lb robot on iRobot's US page |
| Best for | pet owners with carpet on a budget | small homes with tight furniture gaps |
| Skip if | your floor often has cables, socks or toys | you need deep carpet cleaning |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Dreame L40s Ultra
- Vacuum Wars (3.51 Vacuum Wars stars): 92% carpet sand removal, 91% pet hair pickup and 0% hair wrap with the DuoBrush, about 1,935 sq ft per charge, but only 7 of 24 obstacles avoided. Source
- Vacuum Chef (95/100): Scored 95/100 in its real world cleaning tests, measured 490 FPM carpet airflow and 78 dB at max suction. Obstacle avoidance varied by floor and object. Source
iRobot Roomba Plus 575 Combo + AutoWash Dock
- Netzwelt (Germany): Picked up 29.1 g of 30 g of test dirt. Fast, precise navigation, cleaned under radiators, handled dried coffee but failed on dried ketchup, and sometimes drove over cables. Hair wrapped both brushes. Source
- Android.com.pl (Poland) (7.8/10): Navigation never failed and it avoided cables, laces and toys. Very good on hard floors, weaker on fine flour in carpet even after two passes. Used about a low teens percent of battery on about 25 m². Repeated Wi-Fi drops in the app. Source
Questions buyers ask
Which is better, the Dreame L40s Ultra or the iRobot Roomba Plus 575 Combo + AutoWash Dock?
The Dreame L40s Ultra scores higher in our ranking (8.8 vs 7.6 out of 10). Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the iRobot Roomba Plus 575 Combo + AutoWash Dock for small homes with tight furniture gaps.
What is the difference between the L40s Ultra and the Roomba Plus 575 Combo + AutoWash Dock?
Suction: 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra, 25,000 Pa with four levels (Android.com.pl); iRobot's US page says 3.5X the Roomba Plus… on the Roomba Plus 575 Combo + AutoWash Dock. Navigation: LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra, ClearView Pro LiDAR with PrecisionVision AI, up to 5 maps, about 9 min to map (iRobot)… on the Roomba Plus 575 Combo + AutoWash Dock. Obstacle avoidance: 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra, PrecisionVision AI recognizes cords, socks and pet waste (iRobot); Android.com.pl saw it… on the Roomba Plus 575 Combo + AutoWash Dock.
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