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Dreame L40 Ultra vs Roborock S8 MaxV Ultra
The Dreame L40 Ultra comes out ahead for most homes.
The verdict in 10 seconds
The Dreame L40 Ultra suits you if
- You have a mix of hard floors and rugs
- You want a robot that empties, washes and dries itself
- Your floors are often cluttered with socks, shoes or cables
May not suit you if
- Your home is mostly deep or high-pile carpet
- You are short on space for a large dock
- You want top-tier power for a lower price
The Roborock S8 MaxV Ultra suits you if
- You have shedding pets and a mix of hard floors and carpet
- You want a robot that empties, washes and dries itself with minimal effort
- Your home has lots of edges and corners you'd like cleaned well
May not suit you if
- You want top value or are working with a tighter budget
- You're uneasy about a camera and microphone roaming your home
- You have thick shag or tasseled rugs, or need it to lift tough dried-on stains
The short version
The Dreame L40 Ultra is the stronger all-rounder of the two. The Roborock S8 MaxV Ultra is still the better fit if you have shedding pets and a mix of hard floors and carpet.
We researched 13 expert reviews, analyzed 4,916 owner ratings and comments across 12 sources for the two, and cross-checked them into one verdict, so you don't have to.
See the evidence
The scoreboardProduct Review score 84 vs 74 · reliability 88 vs 64
| Dreame L40 Ultra | Roborock S8 MaxV Ultra | |
|---|---|---|
| Product Review score | 84 | 74 |
| Experts | 86 | 81 |
| Owners | 81 | 73 |
| Reliability | 88 | 64 |
| Report problems | 5% | 15% |
| Evidence | 6 reviews · 456 comments | 7 reviews · 456 comments |
| Typical price | $1,150–$1,500 | $1,400–$1,900 |
● marks the better number on each row.
Experts vs ownersExperts 86 vs 81 · Owners 81 vs 73
Dreame L40 Ultra
Roborock S8 MaxV Ultra
How we reached each verdictThe numbers behind each model's score
Dreame L40 Ultra
All 6 expert reviewers tested it hands-on, and 5 of 6 were clearly positive, praising its dock automation, obstacle avoidance and mopping; RTINGS was the outlier, rating its carpet, fine-debris and pet hair cleaning as mediocre due to erratic pathing. Owners largely agree with the positive camp: of 428 first-hand comments, 53% praise suction, 43% mopping and 31% navigation, while complaints are small (6% navigation, 6% noise, 5% mopping). Reliability looks good so far, with only 5% mentioning failures and 2% saying a unit broke or died, but Vacuum Wars notes long-term reliability is unknown because the model is new. Hair tangling is the murkiest area: Vacuum Wars found the standard brush tangled badly, while other reviewers using the Tri-cut brush reported few or no tangles.
Roborock S8 MaxV Ultra
The evidence here is deep: 7 hands-on expert reviews and 456 owner comments, 411 of them first-hand. Experts score it 81 and owners 73, with 4 of 7 reviewers calling it their best or top-tier robot cleaner, and 38% of owners praising its suction versus 5% complaining. Mopping is more divisive among experts (5 of 7 note streaks, stubborn stains or only okay results), though owners lean positive at 27% praise versus 8% complaints. The main caution is durability and value: reliability scores 64, 15% of owner comments mention failures, 9% say it broke or died, and 7% cite poor customer support.
Where each one falls shortThe most common complaints
Dreame L40 Ultra
- Uneven pickup on carpet and pet hair
- Standard brush can tangle with hair
- Bulky dock and premium price
Roborock S8 MaxV Ultra
- Very high price for what it offers
- Mopping can streak and won't remove stubborn stains
- Obstacle avoidance misses cables, socks and small debris; some units fail
Quick answers
Which is better, the Dreame L40 Ultra or the Roborock S8 MaxV Ultra?
The Dreame L40 Ultra, for most homes. The Roborock S8 MaxV Ultra is the better fit if you have shedding pets and a mix of hard floors and carpet.
Based on: Product Review score 84 vs 74.Which is more reliable?
The Dreame L40 Ultra. It's the least likely of the two to give you trouble.
Based on: Reliability 88 vs 64; problems mentioned by 5% vs 15% of owners.Which is easier to live with day to day?
The Dreame L40 Ultra. It's the one people are happiest with once it's home.
Based on: Owners score 81 vs 73, from ratings and comments.Which is cheaper?
The Dreame L40 Ultra usually costs less.
Based on: Typical prices: Dreame L40 Ultra $1,150–$1,500; Roborock S8 MaxV Ultra $1,400–$1,900.As an Amazon Associate we earn from qualifying purchases. It never changes a score.