Dreame L40s Ultra vs Dreame L10s Ultra Gen 2
Quick take: The Dreame L10s Ultra Gen 2 costs $60 less; the Dreame L40s Ultra has stronger suction (19,000 vs 10,000 Pa); the Dreame L10s Ultra Gen 2 runs longer per charge (240 vs 220 min).
Which one to buy
Long hair is where the L40s Ultra earns its premium. The L40s Ultra, at $570, runs two counter-rotating rollers that owners say swallow even 30cm hair without tangling, and they rank it first for heavy shedding. The L10s Ultra Gen 2, last listed at $440 and now discontinued (Dreame's replacement is the L40 Ultra Gen 2 at $570), uses a single rubber roller, and long hair can work into its bearings over time.
Otherwise these overlap heavily. Both hot-wash their mop pads, both extend a mop to reach baseboards, both lift mops on carpet, and both carry a 1-year warranty. The L40s Ultra adds an extending side brush for corners, 19,000 Pa against 10,000 Pa, and 260 minutes of rated runtime against 240. The Gen 2's 3.2 L bag lasts about 75 days by owner accounts, and its owners say the scrubbing mops erase dried coffee and footprints.
On carpet and clutter, neither shines. L40s Ultra owners call it poor on carpet despite the suction, and Gen 2 owners rate theirs midpack. The Gen 2 tested at about 25% obstacle avoidance against a 62% category average, and owners confirm it runs over cables. Standard L40s Ultra owners also report cord-eating. L40s owners add a mop tray that won't fully detach and pads that sometimes aren't picked back up at the dock. Gen 2 owners mention a loud dock and slow Dreame support.
For a pet home with long-haired animals, the L40s Ultra is worth the extra $130. If shedding isn't a factor and you mostly want mopping, the Gen 2 does that job well for less if you find leftover stock.
Dreame L40s Ultra
Best if long-haired pets shed in your home; its dual rollers and extending side brush earn the extra $130.
Dreame L10s Ultra Gen 2
Go this way if pet hair is light and mopping hard floors is the main job; owners praise its stain removal and 75-day bag, but it is now discontinued.
| Spec | Dreame L40s Ultra | Dreame L10s Ultra Gen 2 |
|---|---|---|
| Price | ~$500 | ~$440 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 19000 Pa | 10,000 Pa |
| Battery | 220 min | 240 min |
| Navigation | LiDAR | LiDAR + Camera |
| Filtration | — | Washable filter |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 66 dB | — |
| Dustbin | 310 ml | 300 ml |
| Water tank | 300 ml | 4.5 L |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | Yes | Yes |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.78 x 13.78 x 3.82 in | 13.78 x 13.78 x 3.83 in |
| Weight | 9.04 lbs | 8.8 lbs |
| Warranty | 3 years | 3 years |
Pros & cons
Dreame L40s Ultra
- ✓Flagship-grade 19000Pa suction and hot water mop washing at a mid-range price
- ✓81% positive owner sentiment — praised for obstacle avoidance and pet hair
- ✓DuoBrush design shrugs off long hair that kills single-roller robots
- ✓MopExtend reaches baseboards and into corners most round robots miss
- ✓260-minute battery covers large homes in a single run
- ✗Carpet performance is good but not class-leading — fine dust stays in thick pile
- ✗Dock takes up serious floor space and the water tanks need weekly attention
- ✗Dreame app notifications are chatty out of the box
- ✗Dreame's own price has swung from $1,400 list to $500 within a year, so check its store before paying a retailer more
Dreame L10s Ultra Gen 2
- ✓Hot-water mop washing and heated drying at a midrange price — mops stay fresh
- ✓MopExtend swing-out mop actually cleans edges and under cabinets
- ✓Huge 3.2 L dust bag needs changing only every couple of months
- ✓Ultrasonic carpet detection with flexible per-room carpet strategies
- ✓10,000 Pa suction is strong for the price bracket
- ✓240-minute quiet-mode runtime plus auto-recharge covers big homes
- ✗Obstacle avoidance trails flagship models — cables and socks are still at risk
- ✗Single rubber roller can let long hair reach the bearings over time
- ✗Dreame's app is powerful but cluttered compared with Roborock's
- ✗Only a 1-year standard warranty (extensions cost extra)
- ✗Quiet-mode runtime figure flatters real-world mixed cleaning times
Dreame L40s Ultra vs Dreame L10s Ultra Gen 2: common questions
Is the Dreame L40s Ultra worth $130 more than the L10s Ultra Gen 2?▾
For pet owners, yes. Owners say its dual counter-rotating rollers handle long hair without tangling, while the Gen 2's single roller can let hair reach the bearings. It also adds an extending side brush for corners.
Do either of them avoid cords reliably?▾
Not well. The Gen 2 tested at about 25% obstacle avoidance against a 62% category average, and owners of the standard L40s Ultra report it trying to eat cords too. Pick up cables before running either.
Which is better on carpet?▾
Neither is a carpet specialist. L40s Ultra owners call it poor on carpet despite its 19,000 Pa rating, and Gen 2 owners rate its deep carpet cleaning midpack. Both are at their best on hard floors.