Key specs
- Suction
- 30,000 Pa (iRobot claim)
- Navigation
- Dual-line LiDAR plus AI camera
- Self-emptying
- Yes, up to 90 days
- Mopping
- Roller mop with high-pressure spray pre-treatment, 10 mm lift on carpet
- Dock wash
- Hot water wash and warm air dry
Our verdict
If your home is mostly hard floor, the Plus 678 Combo looks like the smarter buy than the Max 875. The trade-off is a simpler mop lift. As with the 875, treat the performance claims as promises until labs report.
What we like
- Most of the Max 875's features for $300 less
- Spray pre-treatment aimed at dried-on stains
- Same SealForce carpet design as the flagship
What to know
- Mop lifts only 10 mm, with no carpet shield, so deep rugs may get damp
- No pet-area priority setting in the app, according to iRobot's feature list
- Too new for meaningful independent results
How it compares
| Spec | Roomba Plus 678 Combo + AutoWash Dock | Dreame Aqua10 Ultra Roller | MOVA V50 Ultra Complete | Roborock Saros 10R |
|---|---|---|---|---|
| Price | around $899 (US list price, Sep 2026) | around $899 (US sale price, list $1,599, Oct 2026) | around $899 | around $900 |
| Suction | 30,000 Pa (iRobot claim) | 30,000 Pa (Dreame claim) | 24,000 Pa | 20,000 Pa (manufacturer figure) |
| Navigation | Dual-line LiDAR plus AI camera | OmniSight 2.0 LDS, 240+ objects | Retractable laser sensor (FlexiRise) | StarSight 2.0 solid-state LiDAR plus 3D sensors |
| Self-emptying | Yes, up to 90 days | - | Yes, 3.2 L bag, up to 100 days | Yes |
| Mopping | Roller mop with high-pressure spray pre-treatment, 10 mm lift on carpet | Roller mop rinsed with fresh water | Spinning pads, 8 N pressure, extending edge mop, auto detach | Dual spinning pads, hot-water washing, auto mop removal |
| Dock wash | Hot water wash and warm air dry | - | - | - |
| Dock | - | 212F wash, hot-air drying, 100-day auto-empty | - | - |
| Threshold climbing | - | - | 4.2 cm single step, up to 6 cm stepped (StepMaster) | - |
| Height | - | - | - | 3.14 in (about 8 cm) |
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