Products
Roborock S8 Pro Ultra
Roborock Saros Z70
Tested using Methodology v1.0
Updated Aug 25, 2025 04:19 PM
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Tested using Methodology v1.0
Updated Jun 06, 2025 05:28 PM
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Wet Compatible
Mopping Only
Lowest Height Cleared
10.0 cm (3.9'')
Obstacle Avoidance Technology
Camera-Based And Light-Based
Max Threshold Height
1.9 cm (0.7")
Anti-Allergy Filter (HEPA)
No
Wet Compatible
Mopping Only
Lowest Height Cleared
8.5 cm (3.3'')
Obstacle Avoidance Technology
Camera-Based And Light-Based
Max Threshold Height
3.8 cm (1.5")
Anti-Allergy Filter (HEPA)
No
Our Verdict
Roborock S8 Pro Ultra
Roborock Saros Z70
The Roborock Saros Z70 is a better robot vacuum than the much older Roborock S8 Pro Ultra. The Z70 can climb taller thresholds and get under much lower furniture, offers better hard floor pickup and mopping performance, and has a very good obstacle avoidance system. The S8 Pro Ultra, on the other hand, is better on carpet and delivers outstanding pet hair pickup.
Variants
- S8 Pro Ultra (Black)
- S8 Pro Ultra (White)
- Saros Z70 (Black)
- Saros Z70 (Silver)
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Black
S8 Pro Ultra
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Black
Saros Z70
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White
S8 Pro Ultra
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Silver
Saros Z70
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Main Differences for
Multi-Surface Household
Multi-Surface Household
Threshold
Multi-Surface Household
7.6
7.8
Hard Floor Pickup
7.5
9.0
Low-Pile Carpet Pickup
7.0
5.0
Pet Hair Pickup
9.5
7.5
Stains
6.5
8.0
Full Comparison
Design
Build Quality
8.5
8.0
Build Quality Picture
Vacuum & Mop Combo
Yes
Yes
User Maintenance
6.0
6.0
Maintenance Picture
Brushroll Cleaning Video
Recurring Cost
4.0
4.5
Recurring Cost Picture
Bag Part Number
Roborock Disposable Dust Bag for S8 Pro Ultra
Roborock Disposable Dust Bag
Filter Part Number
Roborock Washable Filter for Roborock S8
Roborock Washable Filter For Saros Z70
HEPA Filter Part Number
No HEPA Filter
No HEPA Filter
Dimensions
Robot Vacuum Dimensions
Robot Vacuum Height
9.8 cm (3.9")
8.0 cm (3.2")
Robot Vacuum Width
35.0 cm (13.8")
35.0 cm (13.8")
Robot Vacuum Depth
35.0 cm (13.8")
35.0 cm (13.8")
Docking Station Dimensions
Docking Station Height
45.0 cm (17.7")
48.8 cm (19.2")
Docking Station Width
42.4 cm (16.7")
38.1 cm (15.0")
Docking Station Depth
51.0 cm (20.1")
47.5 cm (18.7")
Internal Dirt Compartment
6.7
1.5
Dirt Compartment Photo
Dirt Compartment Capacity
0.35 L
0.12 L
Full Indicator
No
No
Station Maintenance Capabilities
7.9
7.9
Station Photo
Auto Empty
Yes
Yes
Bagless Station
No
No
Dirt Compartment Capacity
2.00 L
1.95 L
Automatic Tank Refill
Yes
Yes
Mop Washing
Cold Water
Hot Water
Mop Drying
Hot Air
Hot Air
In The Box
In The Box Picture
Battery
9.2
9.1
Minimum Battery Life
102 min
82 min
Maximum Battery Life
297 min
213 min
Recharge Time
168 min
152 min
Removable Batteries
No
No
Quality-Of-Life Features
Picture Of Controls
Power Adjustment
Yes
Yes
Easy On/Off
Yes
Yes
Surface Type Adjustment
Manual And Automatic
Manual And Automatic
Brushroll And Tools
Brushroll And Tools Photo
Brushroll Setup
Dual
Single
Brushroll Type
Rubber
Rubber And Bristles
Side Brush Setup
Single
Single
Side Brush Type
Fixed
Extendable
Performance
Hard Floor Pickup
7.5
9.0
Hard Floor Pickup Video
Hard Floor Pickup Post Test
High-Pile Carpet Pickup
7.5
6.0
High-Pile Carpet Pickup Video
High-Pile Carpet Pickup Post Test
Low-Pile Carpet Pickup
7.0
5.0
Low-Pile Carpet Pickup Video
Low-Pile Carpet Pickup Post Test
Pet Hair Pickup
9.5
7.5
Pet Hair Pickup Video
Pet Hair Pickup Post Test
Airflow
8.0
7.2
Maximum Airflow Video
Maximum Head Airflow
15.2 CFM (0.4 m³/min)
10.5 CFM (0.3 m³/min)
Noise
7.3
8.4
Noise Video
Bare Floor
60.2 dBA
56.2 dBA
Low-Pile Carpet
67.9 dBA
58.1 dBA
Household Adaptability
7.0
7.0
Household Adaptability
Obstacle Avoidance
5.0
7.9
Obstacle Avoidance Technology
Camera-Based And Light-Based
Camera-Based And Light-Based
Object Recognition
Yes
Yes
Obstacle Video
Bare Floor: Avoidance Rate
67%
73%
Bare Floor: Intervention Rate
13%
0%
Carpet: Avoidance Rate
0%
33%
Carpet: Intervention Rate
58%
17%
Always Avoided Pet Waste
No
Yes
Height Clearance
6.0
9.0
Height Clearance Video
Lowest Height Cleared
10.0 cm (3.9'')
8.5 cm (3.3'')
Threshold Clearance
7.0
9.0
Low Threshold Video
High Threshold Video
Max Threshold Height
1.9 cm (0.7")
3.8 cm (1.5")
Air Quality
Sealing Quality Video
Anti-Allergy Filter (HEPA)
No
No
Cracks
5.0
4.5
Cracks Video
Wood Cracks Post Test
Stains
6.5
8.0
Stain Video
Stain Pickup Post Test
Water
0.0
0.0
Wet Compatible
Mopping Only
Mopping Only
Water Video
Water Pickup Post Test
Automation
Physical Automation
9.4
8.9
Recharge And Resume
Yes
Yes
Pathing Algorithm
Smart
Smart
Physical Boundary Markers
No
No
Scheduled Start Buttons
Yes
No
Cycle Control Buttons
On-Board Only
On-Board Only
Navigation Control Buttons
Return To Base Only
Return To Base Only
Companion App Automation
9.5
9.5
Companion App Screen Grabs
App Name
Roborock
Roborock
Software Boundary Markers (No-Go Zones)
Yes
Yes
App Scheduled Start
Yes
Yes
App Cycle Control
Yes
Yes
Navigation Control Within App
Yes
Yes
To Be Deleted
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Black
S8 Pro Ultra
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Black
Saros Z70
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White
S8 Pro Ultra
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Silver
Saros Z70
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Roborock S8 Pro Ultra
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Roborock S8 Pro Ultra vs Roborock Saros Z70: Main Discussion
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