Between the L40 Ultra and Roomba i7+, the L40 Ultra comes out ahead in battery life and noise, while the Roomba i7+ wins on several specs. Overall, the L40 Ultra scores 68.2 and the Roomba i7+ scores 37.2 on our Mars Score.
Which should you buy?
The L40 Ultra is the clear pick on raw spec strength, leading by 31.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the L40 Ultra if you care most about battery life and noise. The biggest gaps in its favor are battery life, noise, mopping, among others.
The Roomba i7+ similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable self-empty base, so those specs don't separate the two — focus on the differences below.
Bottom line: the L40 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Dreame - L40 Ultra wins
- ▲Battery life — 166.67% more. 200 min vs 75 min.
- ▲Noise — 3.00 dB less. 65 vs 68.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Has AI obstacle avoidance.
- ▲Suction: 11000 Pa vs 0 Pa.
- ▲Water tank: 260 ml vs 0 ml.
Why iRobot - Roomba i7+ wins
- No decisive advantages.
Spec comparison
Cleaning
| Spec | Dreame - L40 Ultra | iRobot - Roomba i7+ |
|---|---|---|
| Suction | 11000 Palead | 0 Pa |
| Mopping | truelead | false |
| Water tank | 260 mllead | 0 ml |
| Dustbin | 320 ml | 400 mllead |
| Carpet detection | true | true |
Navigation
| Spec | Dreame - L40 Ultra | iRobot - Roomba i7+ |
|---|---|---|
| Lidar | truelead | false |
| Camera navigation | true | true |
| AI obstacle avoidance | truelead | false |
| Max climb | 40 mmlead | 20 mm |
Autonomy
| Spec | Dreame - L40 Ultra | iRobot - Roomba i7+ |
|---|---|---|
| Battery life | 200 minlead | 75 min |
| Self-empty base | true | true |
| Self-wash mop | truelead | false |
| Self-dry mop | truelead | false |
| Noise | 65 dBlead | 68 dB |
Frequently asked
Which has stronger suction, L40 Ultra or Roomba i7+?+
L40 Ultra delivers 11000 Pa vs 0 Pa.
Do L40 Ultra or Roomba i7+ mop?+
L40 Ultra mops; Roomba i7+ vacuums only.
Which has a self-emptying base, L40 Ultra or Roomba i7+?+
Both ship with a self-emptying base.
Spec-level deep dives
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